Shareholder Report |
6 Months Ended | ||||||||||||||||||||
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Jun. 30, 2025
USD ($)
Holding
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Shareholder Report [Line Items] | |||||||||||||||||||||
Document Type | N-CSRS | ||||||||||||||||||||
Amendment Flag | false | ||||||||||||||||||||
Registrant Name | PENN SERIES FUNDS INC | ||||||||||||||||||||
Entity Central Index Key | 0000702340 | ||||||||||||||||||||
Entity Investment Company Type | N-1A | ||||||||||||||||||||
Document Period End Date | Jun. 30, 2025 | ||||||||||||||||||||
C000018285 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Money Market Fund | ||||||||||||||||||||
Class Name | Money Market Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Money Market Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
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Expenses Paid, Amount | $ 29 | ||||||||||||||||||||
Expense Ratio, Percent | 0.58% | ||||||||||||||||||||
Net Assets | $ 126,925,595 | ||||||||||||||||||||
Holdings Count | Holding | 27 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 213,096 | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
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Largest Holdings [Text Block] | Top 10 Holdings
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
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C000018286 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Limited Maturity Bond Fund | ||||||||||||||||||||
Class Name | Limited Maturity Bond Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Limited Maturity Bond Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
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Expenses Paid, Amount | $ 37 | ||||||||||||||||||||
Expense Ratio, Percent | 0.74% | ||||||||||||||||||||
Net Assets | $ 70,572,588 | ||||||||||||||||||||
Holdings Count | Holding | 54 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 147,735 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 8.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Asset Class Allocation
Bond Quality Allocation 1 ![]() 1 Source: Independent Rating Agencies such as Moody’s, S&P and Fitch. Note: When ratings from all three agencies are available, the median rating is used. When ratings are available from two of the agencies, the lower rating is used. When one rating is available, that rating is used. "NR" is used to classify securities for which a rating is not available.
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Credit Ratings Selection [Text Block] | Source: Independent Rating Agencies such as Moody’s, S&P and Fitch.Note: When ratings from all three agencies are available, the median rating is used. When ratings are available from two of the agencies, the lower rating is used. When one rating is available, that rating is used. "NR" is used to classify securities for which a rating is not available. | ||||||||||||||||||||
Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
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C000018287 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Index 500 Fund | ||||||||||||||||||||
Class Name | Index 500 Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Index 500 Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
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Expenses Paid, Amount | $ 17 | ||||||||||||||||||||
Expense Ratio, Percent | 0.34% | ||||||||||||||||||||
Net Assets | $ 875,446,317 | ||||||||||||||||||||
Holdings Count | Holding | 506 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 518,924 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 2.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
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Largest Holdings [Text Block] | Top 10 Holdings
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
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C000018288 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Mid Cap Growth Fund | ||||||||||||||||||||
Class Name | Mid Cap Growth Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Mid Cap Growth Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
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Expenses Paid, Amount | $ 49 | ||||||||||||||||||||
Expense Ratio, Percent | 0.97% | ||||||||||||||||||||
Net Assets | $ 128,328,520 | ||||||||||||||||||||
Holdings Count | Holding | 67 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 427,194 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 28.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
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Largest Holdings [Text Block] | Top 10 Holdings
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
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C000018289 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Mid Cap Value Fund | ||||||||||||||||||||
Class Name | Mid Cap Value Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Mid Cap Value Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
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Expenses Paid, Amount | $ 41 | ||||||||||||||||||||
Expense Ratio, Percent | 0.83% | ||||||||||||||||||||
Net Assets | $ 85,446,139 | ||||||||||||||||||||
Holdings Count | Holding | 74 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 225,922 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 23.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
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Largest Holdings [Text Block] | Top 10 Holdings
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
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C000018290 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Large Cap Growth Fund | ||||||||||||||||||||
Class Name | Large Cap Growth Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Large Cap Growth Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
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Expenses Paid, Amount | $ 43 | ||||||||||||||||||||
Expense Ratio, Percent | 0.86% | ||||||||||||||||||||
Net Assets | $ 71,178,973 | ||||||||||||||||||||
Holdings Count | Holding | 57 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 180,359 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 7.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
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Largest Holdings [Text Block] | Top 10 Holdings
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
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C000018291 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Mid Core Value Fund | ||||||||||||||||||||
Class Name | Mid Core Value Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Mid Core Value Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
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Expenses Paid, Amount | $ 53 | ||||||||||||||||||||
Expense Ratio, Percent | 1.05% | ||||||||||||||||||||
Net Assets | $ 73,295,856 | ||||||||||||||||||||
Holdings Count | Holding | 116 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 248,410 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 39.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
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Largest Holdings [Text Block] | Top 10 Holdings
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
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C000018292 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Real Estate Securities Fund | ||||||||||||||||||||
Class Name | Real Estate Securities Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Real Estate Securities Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
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Expenses Paid, Amount | $ 49 | ||||||||||||||||||||
Expense Ratio, Percent | 0.98% | ||||||||||||||||||||
Net Assets | $ 99,609,857 | ||||||||||||||||||||
Holdings Count | Holding | 39 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 347,359 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
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Largest Holdings [Text Block] | Top 10 Holdings
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
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C000018293 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Quality Bond Fund | ||||||||||||||||||||
Class Name | Quality Bond Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Quality Bond Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
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Expenses Paid, Amount | $ 34 | ||||||||||||||||||||
Expense Ratio, Percent | 0.68% | ||||||||||||||||||||
Net Assets | $ 350,310,194 | ||||||||||||||||||||
Holdings Count | Holding | 124 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 787,888 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 16.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Asset Class Allocation
Bond Quality Allocation 1 ![]() 1 Source: Independent Rating Agencies such as Moody’s, S&P and Fitch. Note: When ratings from all three agencies are available, the median rating is used. When ratings are available from two of the agencies, the lower rating is used. When one rating is available, that rating is used. "NR" is used to classify securities for which a rating is not available.
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Credit Ratings Selection [Text Block] | Source: Independent Rating Agencies such as Moody’s, S&P and FitchNote: When ratings from all three agencies are available, the median rating is used. When ratings are available from two of the agencies, the lower rating is used. When one rating is available, that rating is used. "NR" is used to classify securities for which a rating is not available. | ||||||||||||||||||||
Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
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C000018294 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | High Yield Bond Fund | ||||||||||||||||||||
Class Name | High Yield Bond Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series High Yield Bond Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
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Expenses Paid, Amount | $ 37 | ||||||||||||||||||||
Expense Ratio, Percent | 0.73% | ||||||||||||||||||||
Net Assets | $ 123,125,498 | ||||||||||||||||||||
Holdings Count | Holding | 91 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 280,000 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 81.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Asset Class Allocation
Bond Quality Allocation 1 ![]() 1 Source: Independent Rating Agencies such as Moody’s, S&P and Fitch. Note: When ratings from all three agencies are available, the median rating is used. When ratings are available from two of the agencies, the lower rating is used. When one rating is available, that rating is used. "NR" is used to classify securities for which a rating is not available.
|
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Credit Ratings Selection [Text Block] | Source: Independent Rating Agencies such as Moody’s, S&P and Fitch.Note: When ratings from all three agencies are available, the median rating is used. When ratings are available from two of the agencies, the lower rating is used. When one rating is available, that rating is used. "NR" is used to classify securities for which a rating is not available. | ||||||||||||||||||||
Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
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C000018295 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Large Growth Stock Fund | ||||||||||||||||||||
Class Name | Large Growth Stock Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Large Growth Stock Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 47 | ||||||||||||||||||||
Expense Ratio, Percent | 0.92% | ||||||||||||||||||||
Net Assets | $ 369,276,717 | ||||||||||||||||||||
Holdings Count | Holding | 64 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 1,167,898 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 17.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
|
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Largest Holdings [Text Block] | Top 10 Holdings
|
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
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C000018296 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Large Cap Value Fund | ||||||||||||||||||||
Class Name | Large Cap Value Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Large Cap Value Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 47 | ||||||||||||||||||||
Expense Ratio, Percent | 0.93% | ||||||||||||||||||||
Net Assets | $ 162,003,664 | ||||||||||||||||||||
Holdings Count | Holding | 74 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 533,446 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 30.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
|
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Largest Holdings [Text Block] | Top 10 Holdings
|
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
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C000018297 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Flexibly Managed Fund | ||||||||||||||||||||
Class Name | Flexibly Managed Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Flexibly Managed Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 44 | ||||||||||||||||||||
Expense Ratio, Percent | 0.87% | ||||||||||||||||||||
Net Assets | $ 5,127,362,114 | ||||||||||||||||||||
Holdings Count | Holding | 245 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 17,206,136 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 59.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments. 2 Includes non-equity investments.
|
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Largest Holdings [Text Block] | Top 10 Holdings
|
||||||||||||||||||||
Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
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C000018298 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | International Equity Fund | ||||||||||||||||||||
Class Name | International Equity Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series International Equity Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 58 | ||||||||||||||||||||
Expense Ratio, Percent | 1.07% | ||||||||||||||||||||
Net Assets | $ 243,226,109 | ||||||||||||||||||||
Holdings Count | Holding | 46 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 918,017 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 118.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() Country Allocation ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
|
||||||||||||||||||||
Largest Holdings [Text Block] | Top 10 Holdings
|
||||||||||||||||||||
Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
||||||||||||||||||||
C000018299 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Small Cap Value Fund | ||||||||||||||||||||
Class Name | Small Cap Value Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Small Cap Value Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 49 | ||||||||||||||||||||
Expense Ratio, Percent | 0.99% | ||||||||||||||||||||
Net Assets | $ 138,593,512 | ||||||||||||||||||||
Holdings Count | Holding | 180 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 468,647 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 45.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
|
||||||||||||||||||||
Largest Holdings [Text Block] | Top 10 Holdings
|
||||||||||||||||||||
Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
||||||||||||||||||||
C000018300 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Small Cap Growth Fund | ||||||||||||||||||||
Class Name | Small Cap Growth Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Small Cap Growth Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 50 | ||||||||||||||||||||
Expense Ratio, Percent | 1.00% | ||||||||||||||||||||
Net Assets | $ 93,980,888 | ||||||||||||||||||||
Holdings Count | Holding | 126 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 321,828 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 13.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
|
||||||||||||||||||||
Largest Holdings [Text Block] | Top 10 Holdings
|
||||||||||||||||||||
Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
||||||||||||||||||||
C000063367 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Aggressive Allocation Fund | ||||||||||||||||||||
Class Name | Aggressive Allocation Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Aggressive Allocation Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 17 | ||||||||||||||||||||
Expense Ratio, Percent | 0.33% | ||||||||||||||||||||
Net Assets | $ 57,188,973 | ||||||||||||||||||||
Holdings Count | Holding | 20 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 33,692 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 10.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Asset Allocation Target ![]() |
||||||||||||||||||||
Largest Holdings [Text Block] | Top 10 Holdings
|
||||||||||||||||||||
Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
||||||||||||||||||||
C000063368 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Moderately Conservative Allocation Fund | ||||||||||||||||||||
Class Name | Moderately Conservative Allocation Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Moderately Conservative Allocation Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 16 | ||||||||||||||||||||
Expense Ratio, Percent | 0.32% | ||||||||||||||||||||
Net Assets | $ 72,150,304 | ||||||||||||||||||||
Holdings Count | Holding | 15 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 43,348 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 4.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Asset Allocation Target ![]() |
||||||||||||||||||||
Largest Holdings [Text Block] | Top 10 Holdings
|
||||||||||||||||||||
Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
||||||||||||||||||||
C000063369 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Small Cap Index Fund | ||||||||||||||||||||
Class Name | Small Cap Index Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Small Cap Index Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 35 | ||||||||||||||||||||
Expense Ratio, Percent | 0.72% | ||||||||||||||||||||
Net Assets | $ 76,273,571 | ||||||||||||||||||||
Holdings Count | Holding | 1,991 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 115,078 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 10.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
|
||||||||||||||||||||
Largest Holdings [Text Block] | Top 10 Holdings
|
||||||||||||||||||||
Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
||||||||||||||||||||
C000063370 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | SMID Cap Growth Fund | ||||||||||||||||||||
Class Name | SMID Cap Growth Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series SMID Cap Growth Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 51 | ||||||||||||||||||||
Expense Ratio, Percent | 1.05% | ||||||||||||||||||||
Net Assets | $ 69,643,719 | ||||||||||||||||||||
Holdings Count | Holding | 84 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 250,441 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 66.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
|
||||||||||||||||||||
Largest Holdings [Text Block] | Top 10 Holdings
|
||||||||||||||||||||
Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
||||||||||||||||||||
C000063371 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | SMID Cap Value Fund | ||||||||||||||||||||
Class Name | SMID Cap Value Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series SMID Cap Value Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 57 | ||||||||||||||||||||
Expense Ratio, Percent | 1.17% | ||||||||||||||||||||
Net Assets | $ 47,674,027 | ||||||||||||||||||||
Holdings Count | Holding | 93 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 188,598 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 37.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
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Largest Holdings [Text Block] | Top 10 Holdings
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
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C000063372 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Balanced Fund | ||||||||||||||||||||
Class Name | Balanced Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Balanced Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
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Expenses Paid, Amount | $ 10 | ||||||||||||||||||||
Expense Ratio, Percent | 0.20% | ||||||||||||||||||||
Net Assets | $ 79,267,531 | ||||||||||||||||||||
Holdings Count | Holding | 3 | ||||||||||||||||||||
Advisory Fees Paid, Amount | |||||||||||||||||||||
Investment Company Portfolio Turnover | 4.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Asset Allocation Target ![]() |
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Largest Holdings [Text Block] | Top 10 Holdings
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
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C000063373 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Conservative Allocation Fund | ||||||||||||||||||||
Class Name | Conservative Allocation Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Conservative Allocation Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
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Expenses Paid, Amount | $ 18 | ||||||||||||||||||||
Expense Ratio, Percent | 0.35% | ||||||||||||||||||||
Net Assets | $ 42,238,424 | ||||||||||||||||||||
Holdings Count | Holding | 10 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 25,677 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 10.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Asset Allocation Target ![]() |
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Largest Holdings [Text Block] | Top 10 Holdings
|
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
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C000063374 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Developed International Index Fund | ||||||||||||||||||||
Class Name | Developed International Index Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Developed International Index Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
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Expenses Paid, Amount | $ 51 | ||||||||||||||||||||
Expense Ratio, Percent | 0.94% | ||||||||||||||||||||
Net Assets | $ 83,512,259 | ||||||||||||||||||||
Holdings Count | Holding | 705 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 112,309 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 2.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() Country Allocation ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
|
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Largest Holdings [Text Block] | Top 10 Holdings
|
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
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Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
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C000063375 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Emerging Markets Equity Fund | ||||||||||||||||||||
Class Name | Emerging Markets Equity Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Emerging Markets Equity Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
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Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
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Expenses Paid, Amount | $ 72 | ||||||||||||||||||||
Expense Ratio, Percent | 1.36% | ||||||||||||||||||||
Net Assets | $ 67,655,860 | ||||||||||||||||||||
Holdings Count | Holding | 51 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 288,379 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 58.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() Country Allocation ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
|
||||||||||||||||||||
Largest Holdings [Text Block] | Top 10 Holdings
|
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
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C000063376 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Large Core Growth Fund | ||||||||||||||||||||
Class Name | Large Core Growth Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Large Core Growth Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 43 | ||||||||||||||||||||
Expense Ratio, Percent | 0.85% | ||||||||||||||||||||
Net Assets | $ 135,892,773 | ||||||||||||||||||||
Holdings Count | Holding | 38 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 374,767 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
|
||||||||||||||||||||
Largest Holdings [Text Block] | Top 10 Holdings
|
||||||||||||||||||||
Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
||||||||||||||||||||
C000063377 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Large Core Value Fund | ||||||||||||||||||||
Class Name | Large Core Value Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Large Core Value Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 46 | ||||||||||||||||||||
Expense Ratio, Percent | 0.91% | ||||||||||||||||||||
Net Assets | $ 125,580,967 | ||||||||||||||||||||
Holdings Count | Holding | 69 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 392,318 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 34.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Sector Allocation 1 ![]() 1 Sector allocation is presented as a percentage of total investments before short-term investments.
|
||||||||||||||||||||
Largest Holdings [Text Block] | Top 10 Holdings
|
||||||||||||||||||||
Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
||||||||||||||||||||
C000063378 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Moderate Allocation Fund | ||||||||||||||||||||
Class Name | Moderate Allocation Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Moderate Allocation Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 15 | ||||||||||||||||||||
Expense Ratio, Percent | 0.30% | ||||||||||||||||||||
Net Assets | $ 193,471,534 | ||||||||||||||||||||
Holdings Count | Holding | 20 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 114,800 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 5.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
||||||||||||||||||||
Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Asset Allocation Target ![]() |
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Largest Holdings [Text Block] | Top 10 Holdings
|
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|
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C000063379 [Member] | |||||||||||||||||||||
Shareholder Report [Line Items] | |||||||||||||||||||||
Fund Name | Moderately Aggressive Allocation Fund | ||||||||||||||||||||
Class Name | Moderately Aggressive Allocation Fund | ||||||||||||||||||||
No Trading Symbol Flag | true | ||||||||||||||||||||
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Penn Series Moderately Aggressive Allocation Fund (“Fund”) for the period of January 01, 2025 to June 30, 2025. | ||||||||||||||||||||
Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||
Additional Information [Text Block] | You can find additional information about the Fund at www.pennmutual.com/FundLiterature. You can also request this information by contacting us at 1-800-523-0650. | ||||||||||||||||||||
Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period.
|
||||||||||||||||||||
Additional Information Phone Number | 1-800-523-0650 | ||||||||||||||||||||
Additional Information Website | www.pennmutual.com/FundLiterature | ||||||||||||||||||||
Expenses [Text Block] | Fund Expenses Based on a hypothetical $10,000 investment
|
||||||||||||||||||||
Expenses Paid, Amount | $ 15 | ||||||||||||||||||||
Expense Ratio, Percent | 0.30% | ||||||||||||||||||||
Net Assets | $ 194,584,251 | ||||||||||||||||||||
Holdings Count | Holding | 20 | ||||||||||||||||||||
Advisory Fees Paid, Amount | $ 114,792 | ||||||||||||||||||||
Investment Company Portfolio Turnover | 6.00% | ||||||||||||||||||||
Additional Fund Statistics [Text Block] | Key Fund Statistics
|
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Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the Fund, with each category representing a percentage of the Fund's total investments. Top 10 Holdings
Asset Allocation Target ![]() |
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Largest Holdings [Text Block] | Top 10 Holdings
|
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Material Fund Change [Text Block] | Material Fund Changes There were no material changes during the reporting period.
|
||||||||||||||||||||
Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period.
|