v3.26.3
Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
James Small Cap Fund | Bloomberg US 3000 Total Return Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [1] 17.21% 13.09% 14.27%
James Small Cap Fund | VettaFi US Equity 3000 Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 17.16% 13.01% 14.25%
James Small Cap Fund | Bloomberg US 2000 Total Return Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [2] 11.06% 6.65% 10.00%
James Small Cap Fund | James Small Cap Fund      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return Before Taxes    
Average Annual Return, Percent 12.65% 15.36% 8.29%
James Small Cap Fund | James Small Cap Fund | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 11.78% 14.48% 7.02%
James Small Cap Fund | James Small Cap Fund | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 8.12% 12.27% 6.33%
JAMES MICRO CAP FUND | Bloomberg US 3000 Total Return Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [3] 17.21% 13.09% 14.27%
JAMES MICRO CAP FUND | VettaFi US Equity 3000 Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 17.16% 13.01% 14.25%
JAMES MICRO CAP FUND | Bloomberg US Micro-Cap Total Return Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [4] 12.72% 3.39% 8.41%
JAMES MICRO CAP FUND | JAMES MICRO CAP FUND      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return Before Taxes    
Average Annual Return, Percent 4.37% 10.42% 7.41%
JAMES MICRO CAP FUND | JAMES MICRO CAP FUND | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 4.12% 9.63% 6.59%
JAMES MICRO CAP FUND | JAMES MICRO CAP FUND | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 2.76% 8.15% 5.80%
James Aggressive Allocation Fund | Bloomberg US 3000 Total Return Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [5] 17.21% 13.09% 14.27%
James Aggressive Allocation Fund | VettaFi US Equity 3000 Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 17.16% 13.01% 14.25%
James Aggressive Allocation Fund | 65% Bloomberg US 3000 Total Return Index, 35% Bloomberg U.S. Aggregate Government/Credit Bond Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [6] 13.67% 8.30% 10.15%
James Aggressive Allocation Fund | James Aggressive Allocation Fund      
Prospectus [Line Items]      
Average Annual Return, Percent 15.92% 10.15% 6.76%
James Aggressive Allocation Fund | James Aggressive Allocation Fund | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 15.77% 10.00% 6.57%
James Aggressive Allocation Fund | James Aggressive Allocation Fund | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 9.53% 8.03% 5.42%
Retail Class [Member] | James Balanced: Golden Rainbow Fund | Bloomberg US 3000 Total Return Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [7] 17.21% 13.09% 14.27%
Retail Class [Member] | James Balanced: Golden Rainbow Fund | VettaFi US Equity 3000 Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 17.16% 13.01% 14.25%
Retail Class [Member] | James Balanced: Golden Rainbow Fund | Blended Index (25% Bloomberg US 1000 Total Return Index, 25% Bloomberg US 2000 Total Return Index, 50% Bloomberg Intermediate U.S. Government/Credit Bond Index) (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [8] 10.81% 5.78% 7.64%
Retail Class [Member] | James Balanced: Golden Rainbow Fund | James Balanced: Golden Rainbow Fund Retail Class      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return Before Taxes    
Average Annual Return, Percent 13.17% 6.85% 4.59%
Retail Class [Member] | James Balanced: Golden Rainbow Fund | James Balanced: Golden Rainbow Fund Retail Class | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 11.71% 5.67% 3.43%
Retail Class [Member] | James Balanced: Golden Rainbow Fund | James Balanced: Golden Rainbow Fund Retail Class | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 8.55% 5.14% 3.36%
Institutional Class [Member] | James Balanced: Golden Rainbow Fund | Bloomberg US 3000 Total Return Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [9] 17.21% 13.09% 14.27%
Institutional Class [Member] | James Balanced: Golden Rainbow Fund | VettaFi US Equity 3000 Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 17.16% 13.01% 14.25%
Institutional Class [Member] | James Balanced: Golden Rainbow Fund | Blended Index (25% Bloomberg US 1000 Total Return Index, 25% Bloomberg US 2000 Total Return Index, 50% Bloomberg Intermediate U.S. Government/Credit Bond Index) (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [10] 10.81% 5.78% 7.64%
Institutional Class [Member] | James Balanced: Golden Rainbow Fund | James Balanced: Golden Rainbow Fund Institutional Class      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return Before Taxes    
Average Annual Return, Percent 13.46% 7.12% 4.86%
Institutional Class [Member] | James Balanced: Golden Rainbow Fund | James Balanced: Golden Rainbow Fund Institutional Class | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 11.89% 5.83% 3.59%
Institutional Class [Member] | James Balanced: Golden Rainbow Fund | James Balanced: Golden Rainbow Fund Institutional Class | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 8.75% 5.32% 3.54%
[1] Effective March 31, 2026, the Fund changed its broad-based securities market index from the VettaFi US Equity 3000 Index to the Bloomberg US 3000 Total Return Index. The Fund changed its broad-based securities market index because the Adviser believes the new broad-based securities market index represents a better comparison against which to measure the Fund’s performance.
[2] Additional index.
[3] Effective March 31, 2026, the Fund changed its broad-based securities market index from the VettaFi US Equity 3000 Index to the Bloomberg US 3000 Total Return Index. The Fund changed its broad-based securities market index because the Adviser believes the new broad-based securities market index represents a better comparison against which to measure the Fund’s performance.
[4] Additional index.
[5] Effective March 31, 2026, the Fund changed its broad-based securities market index from the VettaFi US Equity 3000 Index to the Bloomberg US 3000 Total Return Index. The Fund changed its broad-based securities market index because the Adviser believes the new broad-based securities market index represents a better comparison against which to measure the Fund’s performance.
[6] Additional index.
[7] Effective March 31, 2026, the Fund changed its broad-based securities market index from the VettaFi US Equity 3000 Index to the Bloomberg US 3000 Total Return Index. The Fund changed its broad-based securities market index because the Adviser believes the new broad-based securities market index represents a better comparison against which to measure the Fund’s performance.
[8] Additional index.
[9] Effective March 31, 2026, the Fund changed its broad-based securities market index from the VettaFi US Equity 3000 Index to the Bloomberg US 3000 Total Return Index. The Fund changed its broad-based securities market index because the Adviser believes the new broad-based securities market index represents a better comparison against which to measure the Fund’s performance.
[10] Additional index.