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    <oef:FundName
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      id="t_11_ef1be1ab_09f1_bb38_8a36_1a4c42ac9f66">Green Century Balanced Fund</oef:FundName>
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    <oef:AddlInfoTextBlock
      contextRef="FY2026_C000020964Member"
      id="t_3_c7b84946_8fb5_428f_a308_436d63f5b766"> &lt;div style="font-family: 'arial'; font-size: 9pt; margin-top: 0px; margin-bottom: 10pt; color: rgb(0, 122, 51); font-style: italic;"&gt;For information on the Green Century Funds&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;&#xae;&lt;/sup&gt;, call&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;1-800-93-GREEN. For information on how to open an account and account services, call 1-800-221-5519 8:00 am to 6:00 pm Eastern Time, Monday through Friday. For daily share price information twenty-four hours a day, visit &lt;span style="text-decoration-line: underline; color: rgb(0, 122, 51); font-style: italic; font-family: 'arial'; font-size: 9pt;"&gt;www.greencentury.com&lt;/span&gt;.&lt;/div&gt; </oef:AddlInfoTextBlock>
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    <oef:ExpensesTextBlock
      contextRef="FY2026_C000020964Member"
      id="t_4_24b4a19e_9c86_40b5_972e_874f728b237a"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;What were the Fund costs for the last year?&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px;"&gt;&lt;i&gt;(Based on a hypothetical $10,000 investment)&lt;/i&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The below table explains the costs that you would have paid within the reporting period.&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-after: avoid; break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: left; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Fund (Class)&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Costs of a $10,000 investment&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Costs paid as a percentage&lt;br/&gt;of a $10,000 investment&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: left; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Green Century Balanced Fund&lt;br/&gt;(Individual Investor Class/GCBLX)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;139&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; white-space: nowrap; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;1.32&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:ExpensesTextBlock>
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      id="h_1_16fac086_8e48_4238_90df_3cc872c2102a"
      unitRef="USD">139</oef:ExpensesPaidAmt>
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      id="h_2_9c1fde50_b703_4281_9157_76887f9ecda6"
      unitRef="pure">0.0132</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock
      contextRef="FY2026_C000020964Member"
      id="t_5_b43458d3_aa99_4140_b213_6b9e2fe57181"> &lt;div style="font-family: 'arial'; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51); margin-top: 14pt;"&gt;Management&#x2019;s Discussion of Fund Performance&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;How did the Fund perform last year? What affected the Fund&#x2019;s performance?&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;The fund&#x2019;s performance during the reporting period was influenced by a more cautious equity allocation in the early months, which served as a headwind to relative performance as equity markets grinded higher. However, entering 2026, the fund repositioned toward a more risk-on allocation based on expectations for a supportive macroeconomic environment and continued strength in corporate earnings. While this shift contributed positively to relative performance, it was not sufficient to fully offset the earlier drag, resulting in the fund modestly underperforming its benchmark for the period from August 1, 2025 through July 31, 2026.&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;Within equities, performance was influenced by broader market participation than the highly concentrated market environment of prior years, with gains spread across many companies. The Energy sector had volatile but high returns, driven by the impact of global conflicts on fossil fuel prices. Despite this relative performance headwind, the Fund&#x2019;s tilt toward high-quality companies led to outperformance in other sectors and allowed our equity exposure to keep pace with the benchmark return for the year.&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 14pt;"&gt;The fixed income portfolio modestly outperformed the Bloomberg US Intermediate Credit Index year-to-date&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;(12/31/2025- 7/31/2026), generating 1.8 bps of excess return. Performance was driven primarily by issuer selection, with strong contributions from holdings in Services, Financial Services, and Basic Industry. Sector positioning was a headwind. The portfolio maintained below-benchmark exposure to several of the strongest-performing sectors, particularly Energy and Utilities. One of the defining macro themes of 2026 has been the surge in electricity demand driven by AI data center buildout, which has had a direct and meaningful impact on Energy and Utility credit supported by ongoing investment in power infrastructure, increased financing activity, and growing demand from data center development. Overweights in Real Estate and select financial issuers provided a partial offset. Duration and curve positioning were modestly positive for performance, although most of the excess return came from issuer-specific positions rather than broader market exposures. Trading activity had a small negative impact, reflecting normal portfolio repositioning during the period. Overall, the period was characterized by strong security selection offset by unfavorable sector allocation. While underweights to Energy and Utilities detracted from relative returns, issuer selection across several sectors more than compensated, resulting in modest outperformance versus the benchmark.&lt;/div&gt; </oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock
      contextRef="FY2026_C000020964Member"
      id="t_6_46d7a9af_1489_4520_aeeb_8bc948b460f3"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;Fund Performance&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the Fund. It assumes a $10,000 initial investment at the beginning of the first fiscal year in an appropriate broad-based securities market index for the same period.&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-bottom: 20pt;"&gt;
&lt;img alt="Fund Performance - Growth of 10K" src="g130394chartimages_1163839.jpg" style="display: block; margin-right: auto; margin-left: auto; width: 468pt;"/&gt; &lt;/div&gt; </oef:LineGraphTableTextBlock>
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      id="t_7_147ae8e6_3b63_4435_b354_1ed086ea566c"> 
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid; margin-bottom: 6pt;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;AVERAGE ANNUAL TOTAL RETURN&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;1 Year&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;5 Years&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;10 Years&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;Green Century Balanced Fund (Individual Investor Class/GCBLX)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;11.08&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;4.41&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;8.00&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;S&amp;amp;P Composite 1500&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;1,2&lt;/sup&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;19.97&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;12.49&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;14.72&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;Lipper Balanced&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;3&lt;/sup&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;12.84&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;6.04&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;8.19&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;Custom Index&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;4,5&lt;/sup&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;13.19&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;8.20&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;9.96&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;Custom Balanced Index&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;6&lt;/sup&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;13.02&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;8.02&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;9.70&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid; margin-bottom: 6pt;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-style: italic; font-size: 8pt;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;1&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt;  &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The Regulatory Index is provided as a broad measure of market performance.&lt;/div&gt;  &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-style: italic; font-size: 8pt;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;2&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt;  &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The S&amp;amp;P 1500 Index is an unmanaged index of 1500 stocks.&lt;/div&gt;  &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-style: italic; font-size: 8pt;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;3&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt;  &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The&#160;Lipper&#160;Balanced&#160;Index&#160;is&#160;an&#160;equally&#160;weighted&#160;index&#160;of&#160;the&#160;30&#160;largest&#160;U.S.&#160;Balanced&#160;Funds.&lt;/div&gt;  &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-style: italic; font-size: 8pt;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;4&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt;  &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The Performance Index is provided because the advisor believes it is more reflective of the fund&#x2019;s investment strategy. The investment return and principal value of shares of the Fund fluctuate, so your shares, when sold, may be worth more or less than their original cost.&lt;/div&gt;  &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-style: italic; font-size: 8pt;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;5&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt;  &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The Custom Index is comprised of a 60% weighting in the S&amp;amp;P 1500 Index and a 40% weighting in the Bloomberg U.S. Intermediate Credit (1-10 Year) Index.&lt;/div&gt;  &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; font-style: italic; font-size: 8pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;6&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt;  &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The Custom Balanced Index is comprised of a 60% weighting in the S&amp;amp;P 1500 Index and a 40% weighting in the BofA Merrill Lynch 1-10 Year US Corporate &amp;amp;&#160;Government Index. Effective December 1, 2025 the Custom Index replaced the Custom Balanced Index as the primary benchmark.&lt;/div&gt;  &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AvgAnnlRtrTableTextBlock>
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      id="h_9_ee9b5200_4aa1_4589_b9c1_6ebf259bcc43"
      unitRef="pure">0.1284</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="h_10_1ef1398e_fe43_476e_885d_0a75ab5f4e14"
      unitRef="pure">0.0604</oef:AvgAnnlRtrPct>
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      contextRef="TenY2026_LipperBalancedMember"
      decimals="4"
      id="h_11_b3843c43_1ebe_43e9_93ea_5d7c3b2181be"
      unitRef="pure">0.0819</oef:AvgAnnlRtrPct>
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      contextRef="FY2026_CustomIndexMember"
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      id="h_12_1b73f59a_5105_42fe_9d6a_08260ff73930"
      unitRef="pure">0.1319</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.0820</oef:AvgAnnlRtrPct>
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      contextRef="TenY2026_CustomIndexMember"
      decimals="4"
      id="h_14_0bdf56c0_5649_4827_aa14_e4f77cda469c"
      unitRef="pure">0.0996</oef:AvgAnnlRtrPct>
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      contextRef="FY2026_CustomBalancedIndexMember"
      id="t_23_4a049ca2_839d_6766_f59e_0b5049a1c7e9">Custom Balanced Index</oef:LineGraphAndTableMeasureName>
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      id="h_15_694902e1_53cd_4f3c_a22e_3c683bd9f78a"
      unitRef="pure">0.1302</oef:AvgAnnlRtrPct>
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      id="h_16_5b33fa19_aeb8_4643_8a99_3a72e4f55aab"
      unitRef="pure">0.0802</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2026_CustomBalancedIndexMember"
      decimals="4"
      id="h_17_962e0c29_0e43_42b6_bce2_93d12109356d"
      unitRef="pure">0.0970</oef:AvgAnnlRtrPct>
    <oef:PerfTableMarketIndexChngdTextBlock
      contextRef="FY2026_C000020964Member"
      id="t_14_bf6e8d39_c0a4_93d2_b981_1d4791f510ec">The Custom Balanced Index is comprised of a 60% weighting in the S&amp;amp;P 1500 Index and a 40% weighting in the BofA Merrill Lynch 1-10 Year US Corporate &amp;amp;&#160;Government Index. Effective December 1, 2025 the Custom Index replaced the Custom Balanced Index as the primary benchmark.</oef:PerfTableMarketIndexChngdTextBlock>
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      contextRef="FY2026_C000020964Member"
      id="t_15_20fbfd45_8a18_8500_bd7b_f8f102cb8656"> The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance. </oef:PerformancePastDoesNotIndicateFuture>
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      contextRef="FY2026_C000020964Member"
      id="t_16_bc1cb4df_d631_b66f_0c6e_ac75d27af954">Visit &lt;span style="text-decoration-line: underline; color: rgb(0, 0, 0); font-family: 'arial'; font-size: 9pt;"&gt;www.greencentury.com/balanced-fund/&lt;/span&gt; for the most recent performance information.</oef:UpdPerfInfoLocationTextBlock>
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      contextRef="FY2026_C000020964Member"
      id="t_17_a0cd4ea2_29f7_2982_a13c_63ad7a9c7873">The graph and table do not reflect the&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock
      contextRef="FY2026_C000020964Member"
      id="t_9_a4b9c87e_ea71_4b3a_b7ca_b8d93fdc6169"> &lt;div style="font-family: 'arial'; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51); margin-top: 10pt;"&gt;Key Fund Statistics&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px;"&gt;The following table outlines key fund statistic that you should pay attention to&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Fund net assets&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; padding: 6pt 10pt 3pt 10pt;"&gt;$374 mil.&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Total number of portfolio holdings&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 10pt 3pt 10pt;"&gt;451&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Total advisory fees paid (net)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; padding: 6pt 10pt 3pt 10pt;"&gt;$1.9 mil.&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Portfolio turnover rate as of the end of the reporting period&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 10pt 3pt 10pt;"&gt;62&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AddlFundStatisticsTextBlock>
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      decimals="INF"
      id="h_18_d53722ac_6be6_4723_a4c2_467ffbbc0947"
      unitRef="USD">374000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="TI20260731_C000020964Member"
      decimals="INF"
      id="h_19_7aa7eb00_cbf8_4688_a666_18ab4870a05a"
      unitRef="Holding">451</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="FY2026_C000020964Member"
      decimals="INF"
      id="h_20_184a682f_209a_48f3_8d08_c0671ed0950c"
      unitRef="USD">1900000</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="FY2026_C000020964Member"
      decimals="4"
      id="h_21_e71b3768_212e_42b9_bb31_caed837184b8"
      unitRef="pure">0.62</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="FY2026_C000020964Member"
      id="t_10_77814a6f_9248_4984_9b43_5acc1ccbb8ff"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;Graphical Representation of Holdings&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The tables below show the investment make up of the Fund, representing percentage of total net assets of the Fund. The Top Ten Holdings and Sector Allocation exclude short-term holdings, if any. The Sector Allocation chart represents Common Stocks of the Fund.&lt;/div&gt;   &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Holdings&lt;/b&gt;&lt;/div&gt;    
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;NVIDIA Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Apple, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.0&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Microsoft Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;4.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Alphabet, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;4.2&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Mastercard, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Bank of America Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.7&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Costco Wholesale Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;PNC Financial Services Group, Inc. (The)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;TJX Companies, Inc. (The)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Broadcom, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;   &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Sector Allocation&lt;/b&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0);"&gt;
&lt;img alt="Graphical Representation - Allocation 1 Chart" src="g130394chartimages_1163844.jpg" style="width: 172.8pt;"/&gt; &lt;/div&gt;  &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Asset Allocation&lt;/b&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0);"&gt;
&lt;img alt="Graphical Representation - Allocation 2 Chart" src="g130394chartimages_1163849.jpg" style="max-width: 163pt; width: 172.8pt;"/&gt; &lt;/div&gt; </oef:HoldingsTableTextBlock>
    <oef:LargestHoldingsTableTextBlock
      contextRef="FY2026_C000020964Member"
      id="t_18_19d124b5_69db_d4f8_3dfa_ae2cf23e252b"> &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Holdings&lt;/b&gt;&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;NVIDIA Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Apple, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.0&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Microsoft Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;4.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Alphabet, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;4.2&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Mastercard, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Bank of America Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.7&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Costco Wholesale Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;PNC Financial Services Group, Inc. (The)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;TJX Companies, Inc. (The)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Broadcom, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="TI20260731_C000020964Member_NVIDIACorporationMember"
      decimals="4"
      id="h_22_b09a39be_e68d_435c_a78c_3edc1c56475e"
      unitRef="pure">0.056</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020964Member_AppleIncMember"
      decimals="4"
      id="h_23_477b56a7_0689_43d1_af12_428566f86b24"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020964Member_MicrosoftCorporationMember"
      decimals="4"
      id="h_24_26bac74e_a938_4ff4_9f2e_d917e2308e12"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020964Member_AlphabetIncClassAMember"
      decimals="4"
      id="h_25_317d9ded_7ed8_481a_935a_f317530664d2"
      unitRef="pure">0.042</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020964Member_MastercardIncClassAMember"
      decimals="4"
      id="h_26_26f9b895_eefb_4bda_8e65_4b52f75e8dc2"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020964Member_BankOfAmericaCorporationMember"
      decimals="4"
      id="h_27_8304f361_a031_4937_b8fa_b63d3669496a"
      unitRef="pure">0.017</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020964Member_CostcoWholesaleCorporationMember"
      decimals="4"
      id="h_28_9da9aa55_85bc_4969_9f76_26aa51f420f6"
      unitRef="pure">0.016</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020964Member_PNCFinancialServicesGroupIncTheMember"
      decimals="4"
      id="h_29_33ca8336_7a75_48bc_9132_ca81d6f8a441"
      unitRef="pure">0.016</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020964Member_TJXCompaniesIncTheMember"
      decimals="4"
      id="h_30_4a6886e6_7f57_4d6f_bbee_67857c9e8711"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020964Member_BroadcomIncMember"
      decimals="4"
      id="h_31_88790aa5_668c_4183_bfab_362d10b4dc6a"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:FundName
      contextRef="FY2026_C000225233Member"
      id="t_21_e3c2e71b_04ea_4172_a1e4_27756dd5ea3a">Green Century Balanced Fund</oef:FundName>
    <oef:ClassName
      contextRef="FY2026_C000225233Member"
      id="t_22_6aec1883_ebb5_b43e_5900_e14862b82622">Institutional Class</oef:ClassName>
    <dei:TradingSymbol
      contextRef="FY2026_C000225233Member"
      id="t_23_12a445e0_02d2_585a_1e02_4845f34239cc">GCBUX</dei:TradingSymbol>
    <oef:AddlInfoTextBlock
      contextRef="FY2026_C000225233Member"
      id="t_13_513c7e6f_e241_4e74_a652_d419578e8c8a"> &lt;div style="font-family: 'arial'; font-size: 9pt; margin-top: 0px; margin-bottom: 10pt; color: rgb(0, 122, 51); font-style: italic;"&gt;For information on the Green Century Funds&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;&#xae;&lt;/sup&gt;, call&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;1-800-93-GREEN. For information on how to open an account and account services, call 1-800-221-5519 8:00 am to 6:00 pm Eastern Time, Monday through Friday. For daily share price information twenty-four hours a day, visit &lt;span style="text-decoration-line: underline; color: rgb(0, 122, 51); font-style: italic; font-family: 'arial'; font-size: 9pt;"&gt;www.greencentury.com&lt;/span&gt;.&lt;/div&gt; </oef:AddlInfoTextBlock>
    <oef:AddlInfoPhoneNumber
      contextRef="FY2026_C000225233Member"
      id="t_24_74bf26e4_94eb_85be_091e_8fcd0b480f3f">1-800-93-GREEN1-800-221-5519</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoWebsite
      contextRef="FY2026_C000225233Member"
      id="t_12_03e8c460_9870_44e4_adfa_1d5d8b6bf707">www.greencentury.com</oef:AddlInfoWebsite>
    <oef:ExpensesTextBlock
      contextRef="FY2026_C000225233Member"
      id="t_14_47e3abc4_7e36_400d_9bd9_e486e57423e4"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;What were the Fund costs for the last year?&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px;"&gt;&lt;i&gt;(Based on a hypothetical $10,000 investment)&lt;/i&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The below table explains the costs that you would have paid within the reporting period.&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-after: avoid; break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: left; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Fund (Class)&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Costs of a $10,000 investment&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Costs paid as a percentage&lt;br/&gt;of a $10,000 investment&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: left; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Green Century Balanced Fund&lt;br/&gt;(Institutional Class/GCBUX)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;108&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; white-space: nowrap; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;1.02&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="FY2026_C000225233Member"
      decimals="INF"
      id="h_32_3e6189cf_0101_40ab_b172_5db15713f832"
      unitRef="USD">108</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="FY2026_C000225233Member"
      decimals="4"
      id="h_33_88f179a8_a0ab_4cf7_8c1d_7b6c15999c41"
      unitRef="pure">0.0102</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock
      contextRef="FY2026_C000225233Member"
      id="t_15_b942ebde_877a_479e_b980_d6c05e181b83"> &lt;div style="font-family: 'arial'; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51); margin-top: 14pt;"&gt;Management&#x2019;s Discussion of Fund Performance&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;How did the Fund perform last year? What affected the Fund&#x2019;s performance?&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;The fund&#x2019;s performance during the reporting period was influenced by a more cautious equity allocation in the early months, which served as a headwind to relative performance as equity markets grinded higher. However, entering 2026, the fund repositioned toward a more risk-on allocation based on expectations for a supportive macroeconomic environment and continued strength in corporate earnings. While this shift contributed positively to relative performance, it was not sufficient to fully offset the earlier drag, resulting in the fund modestly underperforming its benchmark for the period from August 1, 2025 through July 31, 2026.&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;Within equities, performance was influenced by broader market participation than the highly concentrated market environment of prior years, with gains spread across many companies. The Energy sector had volatile but high returns, driven by the impact of global conflicts on fossil fuel prices. Despite this relative performance headwind, the Fund&#x2019;s tilt toward high-quality companies led to outperformance in other sectors and allowed our equity exposure to keep pace with the benchmark return for the year.&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 14pt;"&gt;The fixed income portfolio modestly outperformed the Bloomberg US Intermediate Credit Index year-to-date&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;(12/31/2025- 7/31/2026), generating 1.8 bps of excess return. Performance was driven primarily by issuer selection, with strong contributions from holdings in Services, Financial Services, and Basic Industry. Sector positioning was a headwind. The portfolio maintained below-benchmark exposure to several of the strongest-performing sectors, particularly Energy and Utilities. One of the defining macro themes of 2026 has been the surge in electricity demand driven by AI data center buildout, which has had a direct and meaningful impact on Energy and Utility credit supported by ongoing investment in power infrastructure, increased financing activity, and growing demand from data center development. Overweights in Real Estate and select financial issuers provided a partial offset. Duration and curve positioning were modestly positive for performance, although most of the excess return came from issuer-specific positions rather than broader market exposures. Trading activity had a small negative impact, reflecting normal portfolio repositioning during the period. Overall, the period was characterized by strong security selection offset by unfavorable sector allocation. While underweights to Energy and Utilities detracted from relative returns, issuer selection across several sectors more than compensated, resulting in modest outperformance versus the benchmark.&lt;/div&gt; </oef:FactorsAffectingPerfTextBlock>
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      contextRef="FY2026_C000225233Member"
      id="t_16_2a1a646c_85b6_49f2_b0e4_854dfa2ed83c"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;Fund Performance&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the Fund. It assumes a $250,000 initial investment at the beginning of the first fiscal year in an appropriate broad-based securities market index for the same period. Institutional Shares were offered as of November 28, 2020. The Institutional Share Class performance prior to November&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;28, 2020 reflects the performance of the Fund&#x2019;s Individual Investor Class.&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-bottom: 20pt;"&gt;
&lt;img alt="Fund Performance - Growth of 10K" src="g130394chartimages_1163875.jpg" style="display: block; margin-right: auto; margin-left: auto; width: 468pt;"/&gt; &lt;/div&gt; </oef:LineGraphTableTextBlock>
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      id="t_17_7f2b8efa_27cb_473a_a71b_f16a971222bc"> 
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid; margin-bottom: 6pt;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;AVERAGE ANNUAL TOTAL RETURN&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;1 Year&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;5 Years&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;10 Years&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;Green Century Balanced Fund (Institutional Class/GCBUX)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;11.39&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;4.71&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;8.18&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;S&amp;amp;P Composite 1500&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;1,2&lt;/sup&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;19.97&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;12.49&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;14.72&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;Lipper Balanced&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;3&lt;/sup&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;12.84&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;6.04&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;8.19&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;Custom Index&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;4,5&lt;/sup&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;13.19&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;8.20&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;9.96&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;Custom Balanced Index&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;6&lt;/sup&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;13.02&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;8.02&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;9.70&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid; margin-bottom: 6pt;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-style: italic; font-size: 8pt;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;1&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The Regulatory Index is provided as a broad measure of market performance.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-style: italic; font-size: 8pt;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;2&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The S&amp;amp;P 1500 Index is an unmanaged index of 1500 stocks.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-style: italic; font-size: 8pt;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;3&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The&#160;Lipper&#160;Balanced&#160;Index&#160;is&#160;an&#160;equally&#160;weighted&#160;index&#160;of&#160;the&#160;30&#160;largest&#160;U.S.&#160;Balanced&#160;Funds.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-style: italic; font-size: 8pt;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;4&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The Performance Index is provided because the advisor believes it is more reflective of the fund&#x2019;s investment strategy. The investment return and principal value of shares of the Fund fluctuate, so your shares, when sold, may be worth more or less than their original cost.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-style: italic; font-size: 8pt;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;5&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The Custom Index is comprised of a 60% weighting in the S&amp;amp;P 1500 Index and a 40% weighting in the Bloomberg U.S. Intermediate Credit (1-10 Year) Index.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; font-style: italic; font-size: 8pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;6&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The Custom Balanced Index is comprised of a 60% weighting in the S&amp;amp;P 1500 Index and a 40% weighting in the BofA Merrill Lynch 1-10 Year US Corporate &amp;amp;&#160;Government Index. Effective December 1, 2025 the Custom Index replaced the Custom Balanced Index as the primary benchmark.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AvgAnnlRtrTableTextBlock>
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      unitRef="pure">0.1997</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="h_39_38375ce5_4b2e_4112_ab47_7453164396fb"
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      id="h_40_d6f64568_a88c_41dd_be43_6f180fdeb33d"
      unitRef="pure">0.1284</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="h_41_84e7bd49_59fd_46a4_91ee_5a859e4f6b1c"
      unitRef="pure">0.0604</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2026_LipperBalancedMember"
      decimals="4"
      id="h_42_5269972f_4b71_44c7_a682_98e18064733d"
      unitRef="pure">0.0819</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2026_CustomIndexMember"
      id="t_32_92accf87_138b_e0c0_8d22_2b38d6bdf861">Custom Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2026_CustomIndexMember"
      decimals="4"
      id="h_43_bcbf88ca_d338_4cbf_a486_55df924acf38"
      unitRef="pure">0.1319</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      decimals="4"
      id="h_44_b63862ac_5e2c_4ff4_a7f5_60fce7da1598"
      unitRef="pure">0.0820</oef:AvgAnnlRtrPct>
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      contextRef="TenY2026_CustomIndexMember"
      decimals="4"
      id="h_45_f09994e5_1481_4599_afb7_3732a7c2bcac"
      unitRef="pure">0.0996</oef:AvgAnnlRtrPct>
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      contextRef="FY2026_CustomBalancedIndexMember"
      id="t_33_9e7021a1_9d68_ae6e_6556_cb6878008932">Custom Balanced Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2026_CustomBalancedIndexMember"
      decimals="4"
      id="h_46_0800cb47_a0bc_4f63_b588_c61b771f1044"
      unitRef="pure">0.1302</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2026_CustomBalancedIndexMember"
      decimals="4"
      id="h_47_a271b0d1_a48c_41f0_b4cb_ee4588fc34ce"
      unitRef="pure">0.0802</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2026_CustomBalancedIndexMember"
      decimals="4"
      id="h_63_3d1fc6c0_d08c_f5dc_2cfb_02b3da946f45"
      unitRef="pure">0.0970</oef:AvgAnnlRtrPct>
    <oef:PerfTableMarketIndexChngdTextBlock
      contextRef="FY2026_C000225233Member"
      id="t_34_240a24df_f6aa_64b2_7e87_ac2e3532ab03">The Custom Balanced Index is comprised of a 60% weighting in the S&amp;amp;P 1500 Index and a 40% weighting in the BofA Merrill Lynch 1-10 Year US Corporate &amp;amp;&#160;Government Index. Effective December 1, 2025 the Custom Index replaced the Custom Balanced Index as the primary benchmark.</oef:PerfTableMarketIndexChngdTextBlock>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="FY2026_C000225233Member"
      id="t_25_8bcc631b_77b6_ff5a_5b75_68a20875dcf2"> The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance. </oef:PerformancePastDoesNotIndicateFuture>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="FY2026_C000225233Member"
      id="t_26_8a521cde_1007_7eea_3931_4fbd14ce93a6">Visit &lt;span style="text-decoration-line: underline; color: rgb(0, 0, 0); font-family: 'arial'; font-size: 9pt;"&gt;www.greencentury.com/balanced-fund-institutional/&lt;/span&gt; for the most recent performance information.</oef:UpdPerfInfoLocationTextBlock>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="FY2026_C000225233Member"
      id="t_27_e8a77193_92a5_901d_0430_004686c6dc64">The graph and table do not reflect the&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock
      contextRef="FY2026_C000225233Member"
      id="t_19_25ab3d78_a1e4_4ca2_a629_c3fa0c164a92"> &lt;div style="font-family: 'arial'; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51); margin-top: 10pt;"&gt;Key Fund Statistics&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px;"&gt;The following table outlines key fund statistic that you should pay attention to&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Fund net assets&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; padding: 6pt 10pt 3pt 10pt;"&gt;$374 mil.&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Total number of portfolio holdings&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 10pt 3pt 10pt;"&gt;451&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Total advisory fees paid (net)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; padding: 6pt 10pt 3pt 10pt;"&gt;$1.9 mil.&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Portfolio turnover rate as of the end of the reporting period&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 10pt 3pt 10pt;"&gt;62&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="TI20260731_C000225233Member"
      decimals="INF"
      id="h_49_99edd557_d51e_4869_a9a3_88673803c269"
      unitRef="USD">374000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="TI20260731_C000225233Member"
      decimals="INF"
      id="h_50_b040da3c_4075_410c_8333_a2e99b55df2e"
      unitRef="Holding">451</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="FY2026_C000225233Member"
      decimals="INF"
      id="h_51_2061b127_f527_4001_8cb6_6a83320bcf96"
      unitRef="USD">1900000</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="FY2026_C000225233Member"
      decimals="4"
      id="h_52_e132d2d9_4fce_408a_8447_548a1f67f125"
      unitRef="pure">0.62</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="FY2026_C000225233Member"
      id="t_20_e5aa9398_fa6e_40b7_9bad_4ba54dd00fb4"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;Graphical Representation of Holdings&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The tables below show the investment make up of the Fund, representing percentage of total net assets of the Fund. The Top Ten Holdings and Sector Allocation exclude short-term holdings, if any. The Sector Allocation chart represents Common Stocks of the Fund.&lt;/div&gt;   &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Holdings&lt;/b&gt;&lt;/div&gt;    
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;NVIDIA Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Apple, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.0&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Microsoft Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;4.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Alphabet, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;4.2&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Mastercard, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Bank of America Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.7&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Costco Wholesale Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;PNC Financial Services Group, Inc. (The)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;TJX Companies, Inc. (The)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Broadcom, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;   &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Sector Allocation&lt;/b&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0);"&gt;
&lt;img alt="Graphical Representation - Allocation 1 Chart" src="g130394chartimages_1163880.jpg" style="width: 172.8pt;"/&gt; &lt;/div&gt;  &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Asset Allocation&lt;/b&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0);"&gt;
&lt;img alt="Graphical Representation - Allocation 2 Chart" src="g130394chartimages_1163885.jpg" style="max-width: 163pt; width: 172.8pt;"/&gt; &lt;/div&gt; </oef:HoldingsTableTextBlock>
    <oef:LargestHoldingsTableTextBlock
      contextRef="FY2026_C000225233Member"
      id="t_28_0fb82625_7736_58b7_d59e_f79dbd74ee6c"> &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Holdings&lt;/b&gt;&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;NVIDIA Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Apple, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.0&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Microsoft Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;4.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Alphabet, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;4.2&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Mastercard, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Bank of America Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.7&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Costco Wholesale Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;PNC Financial Services Group, Inc. (The)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;TJX Companies, Inc. (The)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Broadcom, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="TI20260731_C000225233Member_NVIDIACorporationMember"
      decimals="4"
      id="h_53_64687445_d540_49eb_866b_910e4bfa0a42"
      unitRef="pure">0.056</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000225233Member_AppleIncMember"
      decimals="4"
      id="h_54_7fef4d28_d990_454c_9300_1099897b6db8"
      unitRef="pure">0.050</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000225233Member_MicrosoftCorporationMember"
      decimals="4"
      id="h_55_8da443e3_2dfb_419b_be20_57e0abd2baef"
      unitRef="pure">0.045</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000225233Member_AlphabetIncClassAMember"
      decimals="4"
      id="h_56_59730bf6_5cd1_4f30_a035_cb55034b1fe6"
      unitRef="pure">0.042</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000225233Member_MastercardIncClassAMember"
      decimals="4"
      id="h_57_03babfe3_21da_49d3_9a98_ce154506d39a"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000225233Member_BankOfAmericaCorporationMember"
      decimals="4"
      id="h_58_1deab4f3_34bb_4eb4_a6eb_53f51a5c2e36"
      unitRef="pure">0.017</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000225233Member_CostcoWholesaleCorporationMember"
      decimals="4"
      id="h_59_19aee165_20d4_470d_a241_5f5e9a4a300f"
      unitRef="pure">0.016</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000225233Member_PNCFinancialServicesGroupIncTheMember"
      decimals="4"
      id="h_60_0359fd1f_6b04_4aae_a55c_84018eb6526d"
      unitRef="pure">0.016</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000225233Member_TJXCompaniesIncTheMember"
      decimals="4"
      id="h_61_e30e5b38_7448_4568_aada_676c7de2a8dd"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000225233Member_BroadcomIncMember"
      decimals="4"
      id="h_62_64a0ccc9_1df4_4230_97a0_cf957ef03b2b"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:FundName
      contextRef="FY2026_C000020965Member"
      id="t_31_4780406d_924c_5092_5e20_459fff4c97c3">Green Century Equity Fund</oef:FundName>
    <oef:ClassName
      contextRef="FY2026_C000020965Member"
      id="t_32_c4ab3e2e_42a2_0d9f_24ee_a0b3f251ca13">Individual Investor Class</oef:ClassName>
    <dei:TradingSymbol
      contextRef="FY2026_C000020965Member"
      id="t_33_ad98703c_7577_6c4b_5d23_3fb8028869d5">GCEQX</dei:TradingSymbol>
    <oef:AddlInfoTextBlock
      contextRef="FY2026_C000020965Member"
      id="t_23_5b9a6aa7_28bd_4ae3_8a68_633c864e5392"> &lt;div style="font-family: 'arial'; font-size: 9pt; margin-top: 0px; margin-bottom: 10pt; color: rgb(0, 122, 51); font-style: italic;"&gt;For information on the Green Century Funds&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;&#xae;&lt;/sup&gt;, call&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;1-800-93-GREEN. For information on how to open an account and account services, call 1-800-221-5519 8:00 am to 6:00 pm Eastern Time, Monday through Friday. For daily share price information twenty-four hours a day, visit &lt;span style="text-decoration-line: underline; color: rgb(0, 122, 51); font-style: italic; font-family: 'arial'; font-size: 9pt;"&gt;www.greencentury.com&lt;/span&gt;.&lt;/div&gt; </oef:AddlInfoTextBlock>
    <oef:AddlInfoPhoneNumber
      contextRef="FY2026_C000020965Member"
      id="t_34_6472a815_99bb_dc88_c2df_1e5a74e78106">1-800-93-GREEN1-800-221-5519</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoWebsite
      contextRef="FY2026_C000020965Member"
      id="t_22_7da9aa1f_a64f_46f7_94b1_c35c126b83e2">www.greencentury.com</oef:AddlInfoWebsite>
    <oef:ExpensesTextBlock
      contextRef="FY2026_C000020965Member"
      id="t_24_52f3a57f_994c_427c_9cd1_7fd5b5497a49"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;What were the Fund costs for the last year?&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px;"&gt;&lt;i&gt;(Based on a hypothetical $10,000 investment)&lt;/i&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The below table explains the costs that you would have paid within the reporting period.&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-after: avoid; break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: left; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Fund (Class)&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Costs of a $10,000 investment&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Costs paid as a percentage&lt;br/&gt;of a $10,000 investment&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: left; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Green Century Equity Fund&lt;br/&gt;(Individual Investor Class/GCEQX)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;130&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; white-space: nowrap; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;1.20&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="FY2026_C000020965Member"
      decimals="INF"
      id="h_63_de331295_82bc_4993_99d5_b49bb946540b"
      unitRef="USD">130</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="FY2026_C000020965Member"
      decimals="4"
      id="h_64_80f05479_1fb4_4550_9d73_cbc6c58d3c52"
      unitRef="pure">0.0120</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock
      contextRef="FY2026_C000020965Member"
      id="t_25_ea957dd3_ab9d_41a0_9e43_6e283409b5e5"> &lt;div style="font-family: 'arial'; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51); margin-top: 14pt;"&gt;Management&#x2019;s Discussion of Fund Performance&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;How did the Fund perform last year? What affected the Fund&#x2019;s performance?&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;The Investor share class of the Green Century Equity Fund returned 17.27%, for the one year period ended July 31, 2026. Over the same time period, the S&amp;amp;P 500 Index returned 19.56%. The strongest performing sectors in the Equity Fund were Communication Services, Health Care, and Real Estate which returned 70.25%, 25.03%, 19.96%, respectively. The worst performing sectors were Utilities, Consumer Discretionary, and Consumer Staples, which returned -1.40%, -0.69%, and +8.24% respectively, for the year. Within the S&amp;amp;P 500 Index, Energy, Health Care, and Information Technology were the strongest performing sectors, gaining 41.17%, 26.93%, and 26.22%, respectively. The worst performing sectors were Utilities, Consumer Discretionary, and Consumer Staples, which returned 6.41%, 7.52%, and 10.32%, respectively, for the year.&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;AI-INFRASTRUCTURE BOOM&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;U.S. technology and technology-enabled companies remained a primary driver of equity market returns over the trailing twelve months. Continued investment in artificial intelligence, data centers, semiconductors, and digital infrastructure supported strong earnings growth among many large-cap Technology and Communication Services companies, reinforcing the market leadership of innovation-oriented businesses.&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;ENERGY MARKET VOLATILITY&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;Energy markets experienced periods of heightened volatility as commodity prices responded to geopolitical developments, shifting supply expectations, and changing global demand trends. While traditional energy companies benefited from episodes of higher oil prices, investor attention increasingly focused on the long-term buildout of electric infrastructure, grid modernization, and energy efficiency solutions needed to support growing power demand from AI and electrification trends.&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;BROADENING MARKET LEADERSHIP&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;Unlike prior periods when returns were concentrated in a narrow group of mega-cap companies, market leadership broadened across several sectors during the year. Industrials, Financials, Health Care, and selected infrastructure-oriented businesses contributed more meaningfully to market performance as investors balanced enthusiasm for AI-driven growth with opportunities tied to economic resilience, capital investment, and improving corporate fundamentals.&lt;/div&gt; </oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock
      contextRef="FY2026_C000020965Member"
      id="t_26_773f5cb9_7c7b_4b84_ac4c_1915bd1ce58d"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;Fund Performance&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the Fund. It assumes a $10,000 initial investment at the beginning of the first fiscal year in an appropriate broad-based securities market index for the same period.&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-bottom: 20pt;"&gt;
&lt;img alt="Fund Performance - Growth of 10K" src="g130394chartimages_1163695.jpg" style="display: block; margin-right: auto; margin-left: auto; width: 468pt;"/&gt; &lt;/div&gt; </oef:LineGraphTableTextBlock>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="FY2026_C000020965Member"
      id="t_27_616bcaa1_0ffa_416e_9525_bcae9d08c550"> 
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid; margin-bottom: 6pt;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;AVERAGE ANNUAL TOTAL RETURN&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;1 Year&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;5 Years&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;10 Years&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;Green Century Equity Fund (Individual Investor Class/GCEQX)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;17.27&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;10.63&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;14.17&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;S&amp;amp;P 500 Index&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;19.56&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;12.86&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;15.08&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AvgAnnlRtrTableTextBlock>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2026_C000020965Member"
      id="t_35_36c55e12_1284_c9cb_fb95_09194f68640a">Green Century Equity Fund (Individual Investor Class/GCEQX)</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2026_C000020965Member"
      decimals="4"
      id="h_65_335e7f4b_472b_42a3_9913_ba27535ad25d"
      unitRef="pure">0.1727</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2026_C000020965Member"
      decimals="4"
      id="h_66_77bf157d_0213_4b27_aeb5_848db5faefce"
      unitRef="pure">0.1063</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2026_C000020965Member"
      decimals="4"
      id="h_67_b32df478_e82d_4672_9644_3f142ecdc552"
      unitRef="pure">0.1417</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2026_StandardPoors500IndexMember"
      id="t_36_23be2744_c9ad_4f51_59f5_2ef6894ddd56">S&amp;P 500 Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2026_StandardPoors500IndexMember"
      decimals="4"
      id="h_68_3bfb063f_0027_4ff0_9923_0e3fca945e5a"
      unitRef="pure">0.1956</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2026_StandardPoors500IndexMember"
      decimals="4"
      id="h_69_575f72d3_98b4_4d1a_803b_6ac23200bf49"
      unitRef="pure">0.1286</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2026_StandardPoors500IndexMember"
      decimals="4"
      id="h_70_04f8b338_063b_4cf1_9317_4320087fc123"
      unitRef="pure">0.1508</oef:AvgAnnlRtrPct>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="FY2026_C000020965Member"
      id="t_37_8e5069d0_f05e_b423_366d_b0e659427898"> The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance. </oef:PerformancePastDoesNotIndicateFuture>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="FY2026_C000020965Member"
      id="t_38_ad3d2d96_d0b7_b883_8ce8_f10f7d61c737">Visit &lt;span style="text-decoration-line: underline; color: rgb(0, 0, 0); font-family: 'arial'; font-size: 9pt;"&gt;www.greencentury.com/equity-fund/&lt;/span&gt; for the most recent performance information.</oef:UpdPerfInfoLocationTextBlock>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="FY2026_C000020965Member"
      id="t_39_2ff86df0_7bc5_c403_56d1_ea1b2fea7f33">The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock
      contextRef="FY2026_C000020965Member"
      id="t_29_75dccd07_5281_48dc_a07b_16452366157d"> &lt;div style="font-family: 'arial'; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51); margin-top: 10pt;"&gt;Key Fund Statistics&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px;"&gt;The following table outlines key fund statistic that you should pay attention to&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Fund net assets&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; padding: 6pt 10pt 3pt 10pt;"&gt;$799 mil.&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Total number of portfolio holdings&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 10pt 3pt 10pt;"&gt;336&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Total advisory fees paid (net)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; padding: 6pt 10pt 3pt 10pt;"&gt;$1.6 mil.&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Portfolio turnover rate as of the end of the reporting period&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 10pt 3pt 10pt;"&gt;5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="TI20260731_C000020965Member"
      decimals="INF"
      id="h_71_8123d187_3283_4b6e_8324_6f9c729b1cba"
      unitRef="USD">799000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="TI20260731_C000020965Member"
      decimals="INF"
      id="h_72_cdf9d6af_c015_4cce_867e_865869e67dee"
      unitRef="Holding">336</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="FY2026_C000020965Member"
      decimals="INF"
      id="h_73_48b16bfe_6a5c_4fa3_91f6_99701c42645d"
      unitRef="USD">1600000</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="FY2026_C000020965Member"
      decimals="4"
      id="h_74_6ab75acc_3cda_47b1_bcdf_afb93a8f5c6b"
      unitRef="pure">0.05</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="FY2026_C000020965Member"
      id="t_30_7d0e2b62_9c69_4a85_b5ee_de4466bb53ca"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;Graphical Representation of Holdings&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The tables below show the investment make up of the Fund, representing percentage of total net assets of the Fund. The Top Ten Holdings and Sector Allocation exclude short-term holdings, if any. The Sector Allocation chart represents Common Stocks of the Fund.&lt;/div&gt;  &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Holdings&lt;/b&gt;&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;NVIDIA Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;15.1&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Microsoft Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;10.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Alphabet, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;6.7&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Alphabet, Inc., Class C&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Tesla, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.9&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Advanced Micro Devices, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Visa, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.0&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Mastercard, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;AbbVie, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Applied Materials, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;  &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Sector Allocation&lt;/b&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0);"&gt;
&lt;img alt="Graphical Representation - Allocation 1 Chart" src="g130394chartimages_1163700.jpg" style="width: 172.8pt;"/&gt; &lt;/div&gt;  &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Asset Allocation&lt;/b&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0);"&gt;
&lt;img alt="Graphical Representation - Allocation 2 Chart" src="g130394chartimages_1163705.jpg" style="max-width: 163pt; width: 172.8pt;"/&gt; &lt;/div&gt; </oef:HoldingsTableTextBlock>
    <oef:LargestHoldingsTableTextBlock
      contextRef="FY2026_C000020965Member"
      id="t_40_ec49d057_b9ab_8fc3_c189_281ce2bc4bb6">&lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Holdings&lt;/b&gt;&lt;/div&gt;
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;NVIDIA Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;15.1&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Microsoft Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;10.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Alphabet, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;6.7&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Alphabet, Inc., Class C&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Tesla, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.9&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Advanced Micro Devices, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Visa, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.0&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Mastercard, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;AbbVie, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Applied Materials, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="TI20260731_C000020965Member_NVIDIACorporationMember"
      decimals="4"
      id="h_75_6be6fe50_1974_45a8_ab39_d346596d90b8"
      unitRef="pure">0.151</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020965Member_MicrosoftCorporationMember"
      decimals="4"
      id="h_76_d6c3c5e5_687a_4025_8b96_cacc687f5f7b"
      unitRef="pure">0.106</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020965Member_AlphabetIncClassAMember"
      decimals="4"
      id="h_77_cc7e2be5_c2a7_4e69_8ee0_7feec9841c9c"
      unitRef="pure">0.067</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020965Member_AlphabetIncClassCMember"
      decimals="4"
      id="h_78_cc1035ed_3601_41ff_b31f_54643f0481bc"
      unitRef="pure">0.054</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020965Member_TeslaIncMember"
      decimals="4"
      id="h_79_e5c5e2c8_67c6_4424_a30c_a1ebfdcaf82e"
      unitRef="pure">0.029</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020965Member_AdvancedMicroDevicesIncMember"
      decimals="4"
      id="h_80_8e8c566c_5ef4_4091_9433_303d8beadc6c"
      unitRef="pure">0.025</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020965Member_VisaIncClassAMember"
      decimals="4"
      id="h_81_9760bc82_bf37_443a_8094_540f6db67eed"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020965Member_MastercardIncClassAMember"
      decimals="4"
      id="h_82_0035c58b_a65b_46e6_a4bf_a4be788ca527"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020965Member_AbbVieIncMember"
      decimals="4"
      id="h_83_c2c97268_1f67_400a_b031_e80553af08d2"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000020965Member_AppliedMaterialsIncMember"
      decimals="4"
      id="h_84_249c8772_2b8b_482b_b76d_8b9eb6390864"
      unitRef="pure">0.013</oef:PctOfNav>
    <oef:FundName
      contextRef="FY2026_C000202490Member"
      id="t_41_14189125_dadb_30d7_0fc0_96964980c6a3">Green Century Equity Fund</oef:FundName>
    <oef:ClassName
      contextRef="FY2026_C000202490Member"
      id="t_42_b7968339_8546_1594_46ca_b45ee1633b9d">Institutional Class</oef:ClassName>
    <dei:TradingSymbol
      contextRef="FY2026_C000202490Member"
      id="t_43_d554479d_7934_3439_d14c_0f56d9bad5d4">GCEUX</dei:TradingSymbol>
    <oef:AddlInfoTextBlock
      contextRef="FY2026_C000202490Member"
      id="t_45_95cd00bb_f8ea_cbe7_8cf6_ff6c4098af4f">&lt;div style="font-family: 'arial'; font-size: 9pt; margin-top: 0px; margin-bottom: 10pt; color: rgb(0, 122, 51); font-style: italic;"&gt;For information on the Green Century Funds&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;&#xae;&lt;/sup&gt;, call&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;1-800-93-GREEN. For information on how to open an account and account services, call 1-800-221-5519 8:00 am to 6:00 pm Eastern Time, Monday through Friday. For daily share price information twenty-four hours a day, visit &lt;span style="text-decoration-line: underline; color: rgb(0, 122, 51); font-style: italic; font-family: 'arial'; font-size: 9pt;"&gt;www.greencentury.com&lt;/span&gt;.&lt;/div&gt;</oef:AddlInfoTextBlock>
    <oef:AddlInfoPhoneNumber
      contextRef="FY2026_C000202490Member"
      id="t_44_03eb0a0d_1f30_9add_5b93_0ba7142ccbe6">1-800-93-GREEN1-800-221-5519</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoWebsite
      contextRef="FY2026_C000202490Member"
      id="t_32_2657ff8e_11a1_412e_8941_2514e8736b81">www.greencentury.com</oef:AddlInfoWebsite>
    <oef:ExpensesTextBlock
      contextRef="FY2026_C000202490Member"
      id="t_46_5d669226_a099_7c41_69d6_91f48820a9d4">&lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;What were the Fund costs for the last year?&lt;/div&gt;&lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px;"&gt;&lt;i&gt;(Based on a hypothetical $10,000 investment)&lt;/i&gt;&lt;/div&gt;&lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The below table explains the costs that you would have paid within the reporting period.&lt;/div&gt;
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-after: avoid; break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: left; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Fund (Class)&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Costs of a $10,000 investment&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Costs paid as a percentage&lt;br/&gt;of a $10,000 investment&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: left; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Green Century Equity Fund&lt;br/&gt;(Institutional Class/GCEUX)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;98&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; white-space: nowrap; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;0.90&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="FY2026_C000202490Member"
      decimals="INF"
      id="h_85_267b839c_fdd3_4190_b623_73df8d85fd7f"
      unitRef="USD">98</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="FY2026_C000202490Member"
      decimals="4"
      id="h_86_5935d6bc_d1a2_45f0_be66_7698e613c004"
      unitRef="pure">0.0090</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock
      contextRef="FY2026_C000202490Member"
      id="t_47_3990b783_bda8_e4fe_17bd_8f9fcfeee49d">&lt;div style="font-family: 'arial'; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51); margin-top: 14pt;"&gt;Management&#x2019;s Discussion of Fund Performance&lt;/div&gt;&lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;How did the Fund perform last year? What affected the Fund&#x2019;s performance?&lt;/div&gt;&lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;The Institutional share class of the Green Century Equity Fund returned 17.62%, for the one year period ended July 31, 2026. Over the same time period, the S&amp;amp;P 500 Index returned 19.56%. The strongest performing sectors in the Equity Fund were Communication Services, Health Care, and Real Estate which returned 70.25%, 25.03%, 19.96%, respectively. The worst performing sectors were Utilities, Consumer Discretionary, and Consumer Staples, which returned -1.40%, -0.69%, and +8.24% respectively, for the year. Within the S&amp;amp;P 500 Index, Energy, Health Care, and Information Technology were the strongest performing sectors, gaining 41.17%, 26.93%, and 26.22%, respectively. The worst performing sectors were Utilities, Consumer Discretionary, and Consumer Staples, which returned 6.41%, 7.52%, and 10.32%, respectively, for the year.&lt;/div&gt;&lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;AI-INFRASTRUCTURE BOOM&lt;/div&gt;&lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;U.S. technology and technology-enabled companies remained a primary driver of equity market returns over the trailing twelve months. Continued investment in artificial intelligence, data centers, semiconductors, and digital infrastructure supported strong earnings growth among many large-cap Technology and Communication Services companies, reinforcing the market leadership of innovation-oriented businesses.&lt;/div&gt;&lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;ENERGY MARKET VOLATILITY&lt;/div&gt;&lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;Energy markets experienced periods of heightened volatility as commodity prices responded to geopolitical developments, shifting supply expectations, and changing global demand trends. While traditional energy companies benefited from episodes of higher oil prices, investor attention increasingly focused on the long-term buildout of electric infrastructure, grid modernization, and energy efficiency solutions needed to support growing power demand from AI and electrification trends.&lt;/div&gt;&lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;BROADENING MARKET LEADERSHIP&lt;/div&gt;&lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;Unlike prior periods when returns were concentrated in a narrow group of mega-cap companies, market leadership broadened across several sectors during the year. Industrials, Financials, Health Care, and selected infrastructure-oriented businesses contributed more meaningfully to market performance as investors balanced enthusiasm for AI-driven growth with opportunities tied to economic resilience, capital investment, and improving corporate fundamentals.&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock
      contextRef="FY2026_C000202490Member"
      id="t_48_6c792383_8cd7_5bbd_811e_749ac79233fe">&lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;Fund Performance&lt;/div&gt;&lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the Fund. It assumes a $250,000 initial investment at the beginning of the first fiscal year in an appropriate broad-based securities market index for the same period.&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;The Institutional Share Class performance for periods prior to April 30, 2018 reflects the performance of the Fund&#x2019;s Individual Investor Class.&lt;/div&gt;&lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-bottom: 20pt;"&gt;
&lt;img alt="Fund Performance - Growth of 10K" src="g130394chartimages_1163731.jpg" style="display: block; margin-right: auto; margin-left: auto; width: 468pt;"/&gt; &lt;/div&gt;</oef:LineGraphTableTextBlock>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="FY2026_C000202490Member"
      id="t_57_f6c131af_e212_9da6_b7fa_b0d6c297ed75">
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid; margin-bottom: 6pt;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;AVERAGE ANNUAL TOTAL RETURN&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;1 Year&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;5 Years&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;10 Years&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;Green Century Equity Fund (Institutional Class/GCEUX)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;17.62&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;10.96&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;14.45&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;S&amp;amp;P 500 Index&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;19.56&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;12.86&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;15.08&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:AvgAnnlRtrTableTextBlock>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2026_C000202490Member"
      id="t_55_4403a9b6_88b3_62fb_0497_c4949e2f4d20">Green Century Equity Fund (Institutional Class/GCEUX)</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2026_C000202490Member"
      decimals="4"
      id="h_87_6f0daaa5_1fae_47e4_b247_2f18fe150ecd"
      unitRef="pure">0.1762</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2026_C000202490Member"
      decimals="4"
      id="h_88_878aa882_c78f_42d3_abf3_19512e4f1c2f"
      unitRef="pure">0.1096</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2026_C000202490Member"
      decimals="4"
      id="h_89_8c4fef72_4c69_4016_8f84_6c07216ce752"
      unitRef="pure">0.1445</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2026_StandardPoors500IndexMember"
      id="t_56_968c6919_0a14_8fc7_71e7_f6068b3ff66f">S&amp;P 500 Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2026_StandardPoors500IndexMember"
      decimals="4"
      id="h_90_f87b8a3a_dd1b_4810_b0b8_c5718fa29ee8"
      unitRef="pure">0.1956</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2026_StandardPoors500IndexMember"
      decimals="4"
      id="h_91_75fa2cdf_9f4c_4e11_95e6_a3237c197749"
      unitRef="pure">0.1286</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2026_StandardPoors500IndexMember"
      decimals="4"
      id="h_92_2ab64f2a_547a_4ed6_a31e_b9c4c0cdd4a2"
      unitRef="pure">0.1508</oef:AvgAnnlRtrPct>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="FY2026_C000202490Member"
      id="t_49_30ca0b12_c5ad_a476_b2c3_557bdf43db46">The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="FY2026_C000202490Member"
      id="t_50_62bc9af5_14f8_1bd0_ac8a_a1235d1b61ec">Visit &lt;span style="text-decoration-line: underline; color: rgb(0, 0, 0); font-family: 'arial'; font-size: 9pt;"&gt;www.greencentury.com/equity-fund-institutional/&lt;/span&gt; for the most recent performance information.</oef:UpdPerfInfoLocationTextBlock>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="FY2026_C000202490Member"
      id="t_51_a686c91b_30a3_6773_76cb_8fea94564676">The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock
      contextRef="FY2026_C000202490Member"
      id="t_52_f94c4dc0_9e9c_1d93_92c7_d4356f0260f1">&lt;div style="font-family: 'arial'; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51); margin-top: 10pt;"&gt;Key Fund Statistics&lt;/div&gt;&lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px;"&gt;The following table outlines key fund statistic that you should pay attention to&lt;/div&gt;
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Fund net assets&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; padding: 6pt 10pt 3pt 10pt;"&gt;$799 mil.&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Total number of portfolio holdings&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 10pt 3pt 10pt;"&gt;336&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Total advisory fees paid (net)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; padding: 6pt 10pt 3pt 10pt;"&gt;$1.6 mil.&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Portfolio turnover rate as of the end of the reporting period&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 10pt 3pt 10pt;"&gt;5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="TI20260731_C000202490Member"
      decimals="INF"
      id="h_93_2a0d432b_e4a5_4106_a090_e9f238b89722"
      unitRef="USD">799000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="TI20260731_C000202490Member"
      decimals="INF"
      id="h_94_2d3b9e41_bec2_4573_94d6_df34240ceb52"
      unitRef="Holding">336</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="FY2026_C000202490Member"
      decimals="INF"
      id="h_95_1d5dc950_eb95_4a46_bc9a_b140b742485d"
      unitRef="USD">1600000</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="FY2026_C000202490Member"
      decimals="4"
      id="h_96_9a5db4e3_2b08_47a7_bd23_b85f57c663d5"
      unitRef="pure">0.05</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="FY2026_C000202490Member"
      id="t_53_77905fdd_e767_f203_7a9f_8396dbabbfca">&lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;Graphical Representation of Holdings&lt;/div&gt;&lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The tables below show the investment make up of the Fund, representing percentage of total net assets of the Fund. The Top Ten Holdings and Sector Allocation exclude short-term holdings, if any. The Sector Allocation chart represents Common Stocks of the Fund.&lt;/div&gt;&lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Holdings&lt;/b&gt;&lt;/div&gt;
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;NVIDIA Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;15.1&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Microsoft Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;10.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Alphabet, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;6.7&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Alphabet, Inc., Class C&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Tesla, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.9&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Advanced Micro Devices, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Visa, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.0&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Mastercard, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;AbbVie, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Applied Materials, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;&lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Sector Allocation&lt;/b&gt;&lt;/div&gt;&lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0);"&gt;
&lt;img alt="Graphical Representation - Allocation 1 Chart" src="g130394chartimages_1163736.jpg" style="width: 172.8pt;"/&gt; &lt;/div&gt;&lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Asset Allocation&lt;/b&gt;&lt;/div&gt;&lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0);"&gt;
&lt;img alt="Graphical Representation - Allocation 2 Chart" src="g130394chartimages_1163741.jpg" style="max-width: 163pt; width: 172.8pt;"/&gt; &lt;/div&gt;</oef:HoldingsTableTextBlock>
    <oef:LargestHoldingsTableTextBlock
      contextRef="FY2026_C000202490Member"
      id="t_54_5973a1f3_ffc3_568b_3482_bbce49fec8f2">&lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Holdings&lt;/b&gt;&lt;/div&gt;
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;NVIDIA Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;15.1&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Microsoft Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;10.6&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Alphabet, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;6.7&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Alphabet, Inc., Class C&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Tesla, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.9&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Advanced Micro Devices, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Visa, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.0&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Mastercard, Inc., Class A&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;AbbVie, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Applied Materials, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;1.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="TI20260731_C000202490Member_NVIDIACorporationMember"
      decimals="4"
      id="h_97_5a64db7b_7ed1_49b1_91cc_881ab4f42090"
      unitRef="pure">0.151</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000202490Member_MicrosoftCorporationMember"
      decimals="4"
      id="h_98_20c84902_5ea9_46c0_9626_456eb4ffe4db"
      unitRef="pure">0.106</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000202490Member_AlphabetIncClassAMember"
      decimals="4"
      id="h_99_f43d3785_5575_4dc9_b5b7_30a2c902cccd"
      unitRef="pure">0.067</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000202490Member_AlphabetIncClassCMember"
      decimals="4"
      id="h_100_fdc92bd1_6948_42dc_9a1c_1681adc061d9"
      unitRef="pure">0.054</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000202490Member_TeslaIncMember"
      decimals="4"
      id="h_101_9b6ecca1_b76e_4d9b_aae6_7e25a842ff7b"
      unitRef="pure">0.029</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000202490Member_AdvancedMicroDevicesIncMember"
      decimals="4"
      id="h_102_874dc1b4_0589_4197_9881_fe1e1d8bc208"
      unitRef="pure">0.025</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000202490Member_VisaIncClassAMember"
      decimals="4"
      id="h_103_1b84adce_2362_423c_b465_f1c03784a2ea"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000202490Member_MastercardIncClassAMember"
      decimals="4"
      id="h_104_c5636be7_847e_4976_934b_a2279caacc1e"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000202490Member_AbbVieIncMember"
      decimals="4"
      id="h_105_f12634fa_0b9a_41a9_b625_b22d1e6e46d8"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_C000202490Member_AppliedMaterialsIncMember"
      decimals="4"
      id="h_106_3dd40803_b2ad_49ef_85c9_44c9ebfd023d"
      unitRef="pure">0.013</oef:PctOfNav>
    <oef:FundName
      contextRef="FY2026_C000173337Member"
      id="t_51_ef1cd7c6_4d58_fb84_7d4d_ed8f2fc6b570">Green Century MSCI International Index Fund</oef:FundName>
    <oef:ClassName
      contextRef="FY2026_C000173337Member"
      id="t_52_2edb37f0_f8bb_4714_8f76_ec1541107abb">Individual Investor Class</oef:ClassName>
    <dei:TradingSymbol
      contextRef="FY2026_C000173337Member"
      id="t_53_cfcc1c43_0c86_64b9_f149_97f20d7ed62e">GCINX</dei:TradingSymbol>
    <oef:AddlInfoTextBlock
      contextRef="FY2026_C000173337Member"
      id="t_43_e3e90fbc_9cb7_4e1b_8245_02340b8f81af"> &lt;div style="font-family: 'arial'; font-size: 9pt; margin-top: 0px; margin-bottom: 10pt; color: rgb(0, 122, 51); font-style: italic;"&gt;For information on the Green Century Funds&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;&#xae;&lt;/sup&gt;, call&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;1-800-93-GREEN. For information on how to open an account and account services, call 1-800-221-5519 8:00 am to 6:00 pm Eastern Time, Monday through Friday. For daily share price information twenty-four hours a day, visit &lt;span style="text-decoration-line: underline; color: rgb(0, 122, 51); font-style: italic; font-family: 'arial'; font-size: 9pt;"&gt;www.greencentury.com&lt;/span&gt;.&lt;/div&gt; </oef:AddlInfoTextBlock>
    <oef:AddlInfoPhoneNumber
      contextRef="FY2026_C000173337Member"
      id="t_41_1e855534_6860_47a8_a092_a3fbe0a70d1d">1-800-93-GREEN1-800-221-5519</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoWebsite
      contextRef="FY2026_C000173337Member"
      id="t_42_7465851a_0784_418c_aefb_0ce35a77fb5b">www.greencentury.com</oef:AddlInfoWebsite>
    <oef:ExpensesTextBlock
      contextRef="FY2026_C000173337Member"
      id="t_44_ea87eb45_0d7e_4bf1_a835_cc9555e7cbc4"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;What were the Fund costs for the last year?&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px;"&gt;&lt;i&gt;(Based on a hypothetical $10,000 investment)&lt;/i&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The below table explains the costs that you would have paid within the reporting period.&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-after: avoid; break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: left; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Fund (Class)&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Costs of a $10,000 investment&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Costs paid as a percentage&lt;br/&gt;of a $10,000 investment&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: left; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Green Century MSCI International Index Fund&lt;br/&gt;(Individual Investor Class/GCINX)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;138&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; white-space: nowrap; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;1.28&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="FY2026_C000173337Member"
      decimals="INF"
      id="h_107_517f7070_6086_4f6f_8fb4_7ea3a8924a5f"
      unitRef="USD">138</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="FY2026_C000173337Member"
      decimals="4"
      id="h_108_77a23786_a1eb_4305_b17d_7d896fcedaa5"
      unitRef="pure">0.0128</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock
      contextRef="FY2026_C000173337Member"
      id="t_45_1b331c1d_f75b_4f71_b713_4c1c63c22a02"> &lt;div style="font-family: 'arial'; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51); margin-top: 14pt;"&gt;Management&#x2019;s Discussion of Fund Performance&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;How did the Fund perform last year? What affected the Fund&#x2019;s performance?&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;The Investor share class of the Green Century MSCI International Index Fund returned 15.12%, for the one year period ended July 31, 2026. Over the same time period, the MSCI World ex USA Index returned 25.00%. The strongest performing sectors in the International Fund were Information Technology, Financials, and Real Estate which returned 75.20%, 24.67%, and 15.65%, respectively. The worst performing sectors were Health Care, Consumer Discretionary, Communication Services, which returned -7.21%, -6.12%, and +1.75% respectively, for the year. Within the MSCI World ex USA Index, Energy, Information Technology, and Financials were the strongest performing sectors, gaining 46.05%, 40.34%, and 39.04%, respectively. The worst performing sectors were Communication Services, Real Estate, and Consumer Discretionary, which returned -3.36%, +9.65%, and +9.78%, respectively, for the year.&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;AI-INFRASTRUCTURE BOOM&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;U.S. technology and technology-enabled companies remained a primary driver of equity market returns over the trailing twelve months. Continued investment in artificial intelligence, data centers, semiconductors, and digital infrastructure supported strong earnings growth among many large-cap Technology and Communication Services companies, reinforcing the market leadership of innovation-oriented businesses.&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;ENERGY MARKET VOLATILITY&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;Energy markets experienced periods of heightened volatility as commodity prices responded to geopolitical developments, shifting supply expectations, and changing global demand trends. While traditional energy companies benefited from episodes of higher oil prices, investor attention increasingly focused on the long-term buildout of electric infrastructure, grid modernization, and energy efficiency solutions needed to support growing power demand from AI and electrification trends.&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;BROADENING MARKET LEADERSHIP&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;Unlike prior periods when returns were concentrated in a narrow group of mega-cap companies, market leadership broadened across several sectors during the year. Industrials, Financials, Health Care, and selected infrastructure-oriented businesses contributed more meaningfully to market performance as investors balanced enthusiasm for AI-driven growth with opportunities tied to economic resilience, capital investment, and improving corporate fundamentals.&lt;/div&gt; </oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock
      contextRef="FY2026_C000173337Member"
      id="t_46_870f4e8b_cd2e_4fe3_9af7_b52b81e79d3a"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;Fund Performance&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the Fund. It assumes a $10,000 initial investment at the beginning of the first fiscal year in an appropriate broad-based securities market index for the same period.&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-bottom: 20pt;"&gt;
&lt;img alt="Fund Performance - Growth of 10K" src="g130394chartimages_1163803.jpg" style="display: block; margin-right: auto; margin-left: auto; width: 468pt;"/&gt; &lt;/div&gt; </oef:LineGraphTableTextBlock>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="FY2026_C000173337Member"
      id="t_47_3bfdaacf_786e_4b41_b517_23da6f31fd76"> 
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid; margin-bottom: 6pt;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;AVERAGE ANNUAL TOTAL RETURN&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;1 Year&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;5 Years&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;&lt;span style="white-space: nowrap;"&gt;Since&lt;br/&gt;Inception&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;1&lt;/sup&gt;&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;Green Century MSCI International Index Fund (Individual Investor Class/GCINX)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;15.12&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;4.15&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;7.02&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;MSCI World ex USA Index&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;2&lt;/sup&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;25.00&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;9.62&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;9.56&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid; margin-bottom: 6pt;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-style: italic; font-size: 8pt;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;1&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt;  &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;Inception Date September 30, 2016&lt;/div&gt;  &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; font-style: italic; font-size: 8pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;2&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt;  &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The MSCI World EX USA Index is a custom index calculated by MSCI Inc. The index includes large and mid-cap stocks across 22 of 23 Developed Markets countries and excludes the United States&lt;/div&gt;  &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AvgAnnlRtrTableTextBlock>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2026_C000173337Member"
      id="t_58_1fd628f9_d236_67b4_322a_e9fce096257a">Green Century MSCI International Index Fund (Individual Investor Class/GCINX)</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2026_C000173337Member"
      decimals="4"
      id="h_109_93af103f_5ba0_4355_8912_c6a2c753225d"
      unitRef="pure">0.1512</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2026_C000173337Member"
      decimals="4"
      id="h_110_4617cd7e_adfb_4b7e_8791_0b54d0790025"
      unitRef="pure">0.0415</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20160930_20260731_C000173337Member"
      decimals="4"
      id="h_111_aba8e530_25f1_42c1_b4f8_503e80917ded"
      unitRef="pure">0.0702</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2026_MSCIWorldExUSAIndexMember"
      id="t_60_aa18c2b3_e0cd_bd68_2033_99cc92fe0fa6">MSCI World ex USA Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2026_MSCIWorldExUSAIndexMember"
      decimals="4"
      id="h_112_e94ba416_c638_4491_aefe_6a29a2cd7396"
      unitRef="pure">0.2500</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2026_MSCIWorldExUSAIndexMember"
      decimals="4"
      id="h_113_d20981f9_f2d9_439a_8072_5b72e7356466"
      unitRef="pure">0.0962</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20160930_20260731_MSCIWorldExUSAIndexMember"
      decimals="4"
      id="h_114_5ff176ce_69e1_4448_929a_acd3d716fbc2"
      unitRef="pure">0.0956</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="FY2026_C000173337Member"
      id="t_59_4f5897ab_a2d6_60a6_a1e7_3a6b52ab4657">2016-09-30</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="FY2026_C000173337Member"
      id="t_54_7b8f0d5b_0899_6f2f_d6c7_0cf87d1f082a"> The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance. </oef:PerformancePastDoesNotIndicateFuture>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="FY2026_C000173337Member"
      id="t_55_f095565f_7194_accc_a5d5_91d36db531d8">Visit &lt;span style="text-decoration-line: underline; color: rgb(0, 0, 0); font-family: 'arial'; font-size: 9pt;"&gt;www.greencentury.com/international-index-fund/&lt;/span&gt; for the most recent performance information.</oef:UpdPerfInfoLocationTextBlock>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="FY2026_C000173337Member"
      id="t_56_83c3ff2b_c269_8d8c_8a91_6297d54bd560">The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock
      contextRef="FY2026_C000173337Member"
      id="t_49_fa8b8634_75ae_4e42_9294_aeecdade090b"> &lt;div style="font-family: 'arial'; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51); margin-top: 10pt;"&gt;Key Fund Statistics&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px;"&gt;The following table outlines key fund statistic that you should pay attention to&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Fund net assets&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; padding: 6pt 10pt 3pt 10pt;"&gt;$174 mil.&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Total number of portfolio holdings&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 10pt 3pt 10pt;"&gt;188&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Total advisory fee paid (net)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; padding: 6pt 10pt 3pt 10pt;"&gt;$478 k.&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Portfolio turnover rate as of the end of the reporting period&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 10pt 3pt 10pt;"&gt;30&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="TI20260731_C000173337Member"
      decimals="INF"
      id="h_115_879d808f_5ed5_49f3_a6e8_d7da54bc8109"
      unitRef="USD">174000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="TI20260731_C000173337Member"
      decimals="INF"
      id="h_116_d6fce631_46cb_4426_9359_81aa561c7697"
      unitRef="Holding">188</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="FY2026_C000173337Member"
      decimals="INF"
      id="h_128_b1360c93_875c_62ac_eb5b_12208e0f5e1a"
      unitRef="USD">478000</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="FY2026_C000173337Member"
      decimals="4"
      id="h_117_a0dfedea_e89a_4cf0_8175_4363149a79d4"
      unitRef="pure">0.30</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="FY2026_C000173337Member"
      id="t_50_9c9fb17a_582d_4860_bf75_f2592b9392bd"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;Graphical Representation of Holdings&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The tables below show the investment make up of the Fund, representing percentage of total net assets of the Fund. The Top Ten Holdings and Country Allocation exclude short-term holdings, if any. The Country Allocation chart represents Common Stocks of the Fund.&lt;/div&gt;   &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Holdings&lt;/b&gt;&lt;/div&gt;    
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;ASML Holding NV&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Novartis AG&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;4.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Schneider Electric SE&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;3.2&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;ABB Ltd.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.7&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Sumitomo Mitsui Financial Group, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Unilever PLC&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Tokyo Electron Ltd.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Hitachi Ltd.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Sony Group Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.2&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Zurich Insurance Group AG&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.0&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;   &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Country Allocation&lt;/b&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0);"&gt;
&lt;img alt="Graphical Representation - Allocation 1 Chart" src="g130394chartimages_1163808.jpg" style="width: 172.8pt;"/&gt; &lt;/div&gt;  &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Asset Allocation&lt;/b&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0);"&gt;
&lt;img alt="Graphical Representation - Allocation 2 Chart" src="g130394chartimages_1163813.jpg" style="max-width: 163pt; width: 172.8pt;"/&gt; &lt;/div&gt; </oef:HoldingsTableTextBlock>
    <oef:LargestHoldingsTableTextBlock
      contextRef="FY2026_C000173337Member"
      id="t_57_f3f91e87_e718_e225_f386_22237c31aa25"> &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Holdings&lt;/b&gt;&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;ASML Holding NV&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Novartis AG&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;4.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Schneider Electric SE&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;3.2&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;ABB Ltd.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.7&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Sumitomo Mitsui Financial Group, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Unilever PLC&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Tokyo Electron Ltd.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Hitachi Ltd.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Sony Group Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.2&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Zurich Insurance Group AG&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.0&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="TI20260731_ASMLHoldingNVMember_C000173337Member"
      decimals="4"
      id="h_118_34673316_612e_48c4_9031_f48c4582305e"
      unitRef="pure">0.053</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_NovartisAGMember_C000173337Member"
      decimals="4"
      id="h_119_10f6465b_3a86_447d_8741_d1c5be828365"
      unitRef="pure">0.044</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_SchneiderElectricSEMember_C000173337Member"
      decimals="4"
      id="h_120_1d920963_035c_49c9_8530_0c4ec40f6185"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_ABBLtdMember_C000173337Member"
      decimals="4"
      id="h_121_0a941f9e_788e_47f0_9bae_7fd703f2fc29"
      unitRef="pure">0.027</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_SumitomoMitsuiFinancialGroupIncMember_C000173337Member"
      decimals="4"
      id="h_122_672c1402_fe24_4b8e_8f88_20604144576b"
      unitRef="pure">0.025</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_UnileverPLCMember_C000173337Member"
      decimals="4"
      id="h_123_1d6b4fab_14a5_4caa_945a_e22ad94d9fea"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_TokyoElectronLtdMember_C000173337Member"
      decimals="4"
      id="h_124_6a0af598_187b_40c3_b39c_41b1caf7f92a"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_HitachiLtdMember_C000173337Member"
      decimals="4"
      id="h_125_b96992e3_ec64_4b8f_b221_ed22268c9f28"
      unitRef="pure">0.023</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_SonyGroupCorporationMember_C000173337Member"
      decimals="4"
      id="h_126_a5139fb5_f4f4_41f0_9a9a_4c97ccefdab0"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20260731_ZurichInsuranceGroupAGMember_C000173337Member"
      decimals="4"
      id="h_127_96c12a42_f163_4919_a9c2_5d127732422f"
      unitRef="pure">0.020</oef:PctOfNav>
    <oef:FundName
      contextRef="FY2026_C000173338Member"
      id="t_61_3527c7d8_5ed7_8644_6ec3_2d75d60af8fa">Green Century MSCI International Index Fund</oef:FundName>
    <oef:ClassName
      contextRef="FY2026_C000173338Member"
      id="t_62_cc0c0ef4_df75_aea6_0e38_fd54fc9a329e">Institutional Class</oef:ClassName>
    <dei:TradingSymbol
      contextRef="FY2026_C000173338Member"
      id="t_63_64fa13fb_d060_4fe5_84b5_01bf06411dfb">GCIFX</dei:TradingSymbol>
    <oef:AddlInfoTextBlock
      contextRef="FY2026_C000173338Member"
      id="t_53_a120204d_f978_420f_8ce6_a81c6b13ed32"> &lt;div style="font-family: 'arial'; font-size: 9pt; margin-top: 0px; margin-bottom: 10pt; color: rgb(0, 122, 51); font-style: italic;"&gt;For information on the Green Century Funds&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;&#xae;&lt;/sup&gt;, call&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;1-800-93-GREEN. For information on how to open an account and account services, call 1-800-221-5519 8:00 am to 6:00 pm Eastern Time, Monday through Friday. For daily share price information twenty-four hours a day, visit &lt;span style="text-decoration-line: underline; color: rgb(0, 122, 51); font-style: italic; font-family: 'arial'; font-size: 9pt;"&gt;www.greencentury.com&lt;/span&gt;.&lt;/div&gt; </oef:AddlInfoTextBlock>
    <oef:AddlInfoPhoneNumber
      contextRef="FY2026_C000173338Member"
      id="t_64_980afd8f_4536_67e3_cc38_a70cd2f034f5">1-800-93-GREEN1-800-221-5519</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoWebsite
      contextRef="FY2026_C000173338Member"
      id="t_52_dc8c8ef7_bf85_469e_a75c_340012511b78">www.greencentury.com</oef:AddlInfoWebsite>
    <oef:ExpensesTextBlock
      contextRef="FY2026_C000173338Member"
      id="t_54_7fad44dc_b22a_4e08_b82c_42f95e5aeb93"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;What were the Fund costs for the last year?&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px;"&gt;&lt;i&gt;(Based on a hypothetical $10,000 investment)&lt;/i&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The below table explains the costs that you would have paid within the reporting period.&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-after: avoid; break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: left; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Fund (Class)&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Costs of a $10,000 investment&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; font-family: 'Arial'; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Costs paid as a percentage&lt;br/&gt;of a $10,000 investment&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: left; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;Green Century MSCI International Index Fund&lt;br/&gt;(Institutional Class/GCIFX)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;106&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; white-space: nowrap; vertical-align: bottom; padding: 6pt 3pt 3pt 3pt;"&gt;0.98&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="FY2026_C000173338Member"
      decimals="INF"
      id="h_128_9851afb1_f5a2_4893_99d0_d084c26f2e3a"
      unitRef="USD">106</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="FY2026_C000173338Member"
      decimals="4"
      id="h_129_64bdc96a_da1e_4ba6_ad6d_e285493ae777"
      unitRef="pure">0.0098</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock
      contextRef="FY2026_C000173338Member"
      id="t_55_4eab60a9_9697_47a4_b542_1282dc6344f5"> &lt;div style="font-family: 'arial'; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51); margin-top: 14pt;"&gt;Management&#x2019;s Discussion of Fund Performance&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;How did the Fund perform last year? What affected the Fund&#x2019;s performance?&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;The Institutional share class of the Green Century MSCI International Index Fund returned 15.47%, for the one year period ended July 31, 2026. Over the same time period, the MSCI World ex USA Index returned 25.00%. The strongest performing sectors in the International Fund were Information Technology, Financials, and Real Estate which returned 75.20%, 24.67%, and 15.65%, respectively. The worst performing sectors were Health Care, Consumer Discretionary, Communication Services, which returned -7.21%, -6.12%, and +1.75% respectively, for the year. Within the MSCI World ex USA Index, Energy, Information Technology, and Financials were the strongest performing sectors, gaining 46.05%, 40.34%, and 39.04%, respectively. The worst performing sectors were Communication Services, Real Estate, and Consumer Discretionary, which returned -3.36%, +9.65%, and +9.78%, respectively, for the year.&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;AI-INFRASTRUCTURE BOOM&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;U.S. technology and technology-enabled companies remained a primary driver of equity market returns over the trailing twelve months. Continued investment in artificial intelligence, data centers, semiconductors, and digital infrastructure supported strong earnings growth among many large-cap Technology and Communication Services companies, reinforcing the market leadership of innovation-oriented businesses.&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;ENERGY MARKET VOLATILITY&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;Energy markets experienced periods of heightened volatility as commodity prices responded to geopolitical developments, shifting supply expectations, and changing global demand trends. While traditional energy companies benefited from episodes of higher oil prices, investor attention increasingly focused on the long-term buildout of electric infrastructure, grid modernization, and energy efficiency solutions needed to support growing power demand from AI and electrification trends.&lt;/div&gt;  &lt;div style="font-size: 9pt; margin-top: 0px; letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3pt; font-family: 'arial'; color: rgb(0, 122, 51); font-weight: bold;"&gt;BROADENING MARKET LEADERSHIP&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 7.5pt;"&gt;Unlike prior periods when returns were concentrated in a narrow group of mega-cap companies, market leadership broadened across several sectors during the year. Industrials, Financials, Health Care, and selected infrastructure-oriented businesses contributed more meaningfully to market performance as investors balanced enthusiasm for AI-driven growth with opportunities tied to economic resilience, capital investment, and improving corporate fundamentals.&lt;/div&gt; </oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock
      contextRef="FY2026_C000173338Member"
      id="t_56_c577c971_95ad_4e75_b4ad_ccad83257923"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;Fund Performance&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the Fund. It assumes a $250,000 initial investment at the beginning of the first fiscal year in an appropriate broad-based securities market index for the same period.&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-bottom: 20pt;"&gt;
&lt;img alt="Fund Performance - Growth of 10K" src="g130394chartimages_1163767.jpg" style="display: block; margin-right: auto; margin-left: auto; width: 468pt;"/&gt; &lt;/div&gt; </oef:LineGraphTableTextBlock>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="FY2026_C000173338Member"
      id="t_57_a585ad01_64a3_47f9_aaee_ce6e8b2846d5"> 
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid; margin-bottom: 6pt;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;AVERAGE ANNUAL TOTAL RETURN&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;1 Year&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;5 Years&lt;/td&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;&lt;span style="white-space: nowrap;"&gt;Since&lt;br/&gt;Inception&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;1&lt;/sup&gt;&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;Green Century MSCI International Index Fund (Institutional Class/GCIFX)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;15.47&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;4.48&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;7.33&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; padding: 6pt 3pt 3pt 3pt;"&gt;MSCI World ex USA Index&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;2&lt;/sup&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;25.00&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;9.62&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 3pt 3pt 3pt;"&gt;9.56&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid; margin-bottom: 6pt;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-style: italic; font-size: 8pt;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;1&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt;  &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;Inception Date September 30, 2016&lt;/div&gt;  &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; font-style: italic; font-size: 8pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-weight: normal; font-style: italic; text-align: left; vertical-align: top; width: 10pt; padding: 3pt 0 0 0;"&gt; &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;&lt;sup style="vertical-align: baseline; position: relative; top: -0.4em; line-height: 0px;"&gt;2&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt; 
&lt;td style="font-family: 'Arial'; color: rgb(0, 0, 0); break-inside: avoid-page; font-size: 7.5pt; font-style: italic; text-align: left; vertical-align: top; padding: 0 0 3pt 0;"&gt;  &lt;div style="font-family: 'arial'; color: rgb(0, 0, 0); margin-top: 0px; font-style: italic; font-size: 7.5pt; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;The MSCI World EX USA Index is a custom index calculated by MSCI Inc. The index includes large and mid-cap stocks across 22 of 23 Developed Markets countries and excludes the United States&lt;/div&gt;  &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AvgAnnlRtrTableTextBlock>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2026_C000173338Member"
      id="t_65_ec8b0a9b_0222_1730_56d2_7ff326cd6037">Green Century MSCI International Index Fund (Institutional Class/GCIFX)</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2026_C000173338Member"
      decimals="4"
      id="h_130_0515a3c8_64be_4224_bddf_175a2b3fcf95"
      unitRef="pure">0.1547</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2026_C000173338Member"
      decimals="4"
      id="h_131_32573980_02e7_40b5_95af_bc0aecfdd680"
      unitRef="pure">0.0448</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20160930_20260731_C000173338Member"
      decimals="4"
      id="h_132_2184c05c_50e4_4009_9986_cadb12092dbc"
      unitRef="pure">0.0733</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2026_MSCIWorldExUSAIndexMember"
      id="t_67_3213b9d9_906b_831b_28fd_16c7b6ed4330">MSCI World ex USA Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2026_MSCIWorldExUSAIndexMember"
      decimals="4"
      id="h_133_d4e6ddba_17df_47dc_864b_76dab7e5f08d"
      unitRef="pure">0.2500</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2026_MSCIWorldExUSAIndexMember"
      decimals="4"
      id="h_134_ca9c1dd2_f724_4c20_b74e_522573cd4f4e"
      unitRef="pure">0.0962</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20160930_20260731_MSCIWorldExUSAIndexMember"
      decimals="4"
      id="h_135_643d54c7_fc2b_47e1_9e6b_1b12d335578e"
      unitRef="pure">0.0956</oef:AvgAnnlRtrPct>
    <oef:PerfInceptionDate
      contextRef="FY2026_C000173338Member"
      id="t_66_119287c8_ae89_2b67_4f3a_7e3227becd13">2016-09-30</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="FY2026_C000173338Member"
      id="t_68_7d94e52a_72b0_772b_9132_f91b9b56ba31"> The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance. </oef:PerformancePastDoesNotIndicateFuture>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="FY2026_C000173338Member"
      id="t_69_91eb3dc9_80ec_10fc_07ba_236afef55038">Visit &lt;span style="text-decoration-line: underline; color: rgb(0, 0, 0); font-family: 'arial'; font-size: 9pt;"&gt;www.greencentury.com/international-index-fund-institutional/&lt;/span&gt; for the most recent performance information.</oef:UpdPerfInfoLocationTextBlock>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="FY2026_C000173338Member"
      id="t_70_19617929_b6bc_4d58_d8e2_c7ae474812a3">The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock
      contextRef="FY2026_C000173338Member"
      id="t_59_af91115a_c770_4f96_b7c3_3f8fac3e3ac4"> &lt;div style="font-family: 'arial'; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51); margin-top: 10pt;"&gt;Key Fund Statistics&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px;"&gt;The following table outlines key fund statistic that you should pay attention to&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Fund net assets&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; padding: 6pt 10pt 3pt 10pt;"&gt;$174 mil.&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Total number of portfolio holdings&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 10pt 3pt 10pt;"&gt;188&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Total advisory fee paid (net)&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; padding: 6pt 10pt 3pt 10pt;"&gt;$478 k.&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; width: 40%; font-weight: bold; text-align: left; font-family: 'Arial'; padding: 6pt 10pt 3pt 10pt;"&gt;Portfolio turnover rate as of the end of the reporting period&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 10pt 3pt 10pt;"&gt;30&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="TI20260731_C000173338Member"
      decimals="INF"
      id="h_136_6750c1c4_32e2_4a6f_a0fa_28dfa794815e"
      unitRef="USD">174000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="TI20260731_C000173338Member"
      decimals="INF"
      id="h_137_a252e72f_ce48_40cf_bb3d_7203e519d60b"
      unitRef="Holding">188</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="FY2026_C000173338Member"
      decimals="INF"
      id="h_149_d301a303_8f1c_651b_0ca6_0906149c089c"
      unitRef="USD">478000</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="FY2026_C000173338Member"
      decimals="4"
      id="h_138_a6eab3a9_d4dc_4477_865f_ed0374115dc0"
      unitRef="pure">0.30</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="FY2026_C000173338Member"
      id="t_60_b9d8ca1b_7cc1_4c5a_a68b_64b666d016a7"> &lt;div style="font-family: 'arial'; margin-top: 0px; font-weight: bold; font-size: 11.52pt; margin-bottom: 3pt; color: rgb(0, 122, 51);"&gt;Graphical Representation of Holdings&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 10pt;"&gt;The tables below show the investment make up of the Fund, representing percentage of total net assets of the Fund. The Top Ten Holdings and Country Allocation exclude short-term holdings, if any. The Country Allocation chart represents Common Stocks of the Fund.&lt;/div&gt;  &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Holdings&lt;/b&gt;&lt;/div&gt;  
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;ASML Holding NV&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Novartis AG&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;4.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Schneider Electric SE&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;3.2&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;ABB Ltd.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.7&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Sumitomo Mitsui Financial Group, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Unilever PLC&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Tokyo Electron Ltd.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Hitachi Ltd.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Sony Group Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.2&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Zurich Insurance Group AG&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.0&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;  &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Country Allocation&lt;/b&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0);"&gt;
&lt;img alt="Graphical Representation - Allocation 1 Chart" src="g130394chartimages_1163772.jpg" style="width: 172.8pt;"/&gt; &lt;/div&gt;  &lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Asset Allocation&lt;/b&gt;&lt;/div&gt;  &lt;div style="font-family: 'arial'; font-size: 9pt; color: rgb(0, 0, 0);"&gt;
&lt;img alt="Graphical Representation - Allocation 2 Chart" src="g130394chartimages_1163777.jpg" style="max-width: 163pt; width: 172.8pt;"/&gt; &lt;/div&gt; </oef:HoldingsTableTextBlock>
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      contextRef="FY2026_C000173338Member"
      id="t_71_d53deb4a_b399_cc59_9b10_ce72ab1f3b19">&lt;div style="font-size: 9pt; font-family: 'arial'; letter-spacing: 1.25px; text-transform: uppercase; text-align: center; padding-bottom: 5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; color: rgb(0, 122, 51); margin: 5pt 0px 5pt 0px;"&gt;&lt;b&gt;Top Ten Holdings&lt;/b&gt;&lt;/div&gt;
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid;"&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;ASML Holding NV&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;5.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Novartis AG&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;4.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Schneider Electric SE&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;3.2&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;ABB Ltd.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.7&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Sumitomo Mitsui Financial Group, Inc.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.5&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Unilever PLC&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Tokyo Electron Ltd.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.4&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Hitachi Ltd.&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.3&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Sony Group Corporation&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.2&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="break-inside: avoid-page; height: auto; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;"&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; text-align: left; padding: 6pt 3pt 3pt 12pt;"&gt;Zurich Insurance Group AG&lt;/td&gt; 
&lt;td style="font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; padding: 6pt 12pt 3pt 3pt;"&gt;2.0&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:LargestHoldingsTableTextBlock>
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