| Form N-CSR Cover | 6 Months Ended |
| Jun. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | PENN SERIES FUNDS INC |
| Entity Central Index Key | 0000702340 |
| Document Period End Date | Jun. 30, 2024 |
| Shareholder Report | 6 Months Ended |
| Jun. 30, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | PENN SERIES FUNDS INC |
| Entity Central Index Key | 0000702340 |
| Document Period End Date | Jun. 30, 2024 |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage High Yield Bond Fund $ 0.73 % |
| Expenses Paid, Amount | $ 37 |
| Expense Ratio, Percent | 0.73% |
| Net Assets | $ 129,847,948 |
| Holdings Count | Holding | 127 |
| Advisory Fees Paid, Amount | $ 299,012 |
| Investment Company Portfolio Turnover | 41% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % Weighted Average Maturity 4.2 Years Effective Duration 2.5 Years |
| 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 Corporate Bonds 90.5 % Loan Agreements 5.4 % Money Market Funds 3.6 % Asset Backed Securities 0.5 % Bond Quality Allocation 1 1 Note: When a security is rated differently by three rating agencies, the median rating is used; when rated differently by two rating agencies, the lower rating is used. |
| Credit Quality Explanation [Text Block] | Note: When a security is rated differently by three rating agencies, the median rating is used; when rated differently by two rating agencies, the lower rating is used. |
| Credit Ratings Selection [Text Block] | Source: Independent Rating Agencies such as Moody’s, S&P, Fitch, etc. |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Flexibly Managed Fund $ 0.87 % |
| Expenses Paid, Amount | $ 45 |
| Expense Ratio, Percent | 0.87% |
| Net Assets | $ 5,244,332,488 |
| Holdings Count | Holding | 306 |
| Advisory Fees Paid, Amount | $ 17,661,018 |
| Investment Company Portfolio Turnover | 34% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Microsoft Corp. 5.4 % U.S. Treasury Notes 3.7 % U.S. Treasury Notes 3.5 % Alphabet, Inc., Class A 2.7 % Amazon.com, Inc. 2.7 % UnitedHealth Group, Inc. 2.6 % NVIDIA Corp. 2.6 % Danaher Corp. 2.1 % U.S. Treasury Notes 2.0 % Intuit, Inc. 2.0 % Sector Allocation 1 1 2 |
| Largest Holdings [Text Block] | Top 10 Holdings Microsoft Corp. 5.4 % U.S. Treasury Notes 3.7 % U.S. Treasury Notes 3.5 % Alphabet, Inc., Class A 2.7 % Amazon.com, Inc. 2.7 % UnitedHealth Group, Inc. 2.6 % NVIDIA Corp. 2.6 % Danaher Corp. 2.1 % U.S. Treasury Notes 2.0 % Intuit, Inc. 2.0 % |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Small Cap Growth Fund $ 1.02 % |
| Expenses Paid, Amount | $ 52 |
| Expense Ratio, Percent | 1.02% |
| Material Change Date | Jun. 01, 2024 |
| Net Assets | $ 100,214,017 |
| Holdings Count | Holding | 126 |
| Advisory Fees Paid, Amount | $ 366,894 |
| Investment Company Portfolio Turnover | 10% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 SS&C Technologies Holdings, Inc. 2.2 % Rentokil Initial PLC, ADR 2.0 % Stride, Inc. 1.8 % The Descartes Systems Group, Inc. 1.8 % Globus Medical, Inc., Class A 1.7 % LPL Financial Holdings, Inc. 1.7 % Blackbaud, Inc. 1.7 % Broadridge Financial Solutions, Inc. 1.6 % CSW Industrials, Inc. 1.6 % Crown Holdings, Inc. 1.5 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings SS&C Technologies Holdings, Inc. 2.2 % Rentokil Initial PLC, ADR 2.0 % Stride, Inc. 1.8 % The Descartes Systems Group, Inc. 1.8 % Globus Medical, Inc., Class A 1.7 % LPL Financial Holdings, Inc. 1.7 % Blackbaud, Inc. 1.7 % Broadridge Financial Solutions, Inc. 1.6 % CSW Industrials, Inc. 1.6 % Crown Holdings, Inc. 1.5 % |
| Material Fund Change [Text Block] | Material Fund Changes Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.75% of the Fund’s average daily net assets up to $25 million, 0.70% of the Fund’s average daily net assets on the next $25 million, and 0.65% of the Fund’s average daily net assets over $50 million. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.80% of the Fund’s average daily net assets up to $25 million, 0.75% of the Fund’s average daily net assets on the next $25 million, and 0.70% of the Fund’s average daily net assets over $50 million. |
| Material Fund Change Expenses [Text Block] | Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.75% of the Fund’s average daily net assets up to $25 million, 0.70% of the Fund’s average daily net assets on the next $25 million, and 0.65% of the Fund’s average daily net assets over $50 million. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.80% of the Fund’s average daily net assets up to $25 million, 0.75% of the Fund’s average daily net assets on the next $25 million, and 0.70% of the Fund’s average daily net assets over $50 million. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Small Cap Index Fund $ 0.71 % |
| Expenses Paid, Amount | $ 36 |
| Expense Ratio, Percent | 0.71% |
| Net Assets | $ 81,997,382 |
| Holdings Count | Holding | 1,965 |
| Advisory Fees Paid, Amount | $ 122,443 |
| Investment Company Portfolio Turnover | 14% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Insmed, Inc. 0.4 % FTAI Aviation Ltd. 0.4 % Abercrombie & Fitch Co., Class A 0.4 % Fabrinet 0.4 % Sprouts Farmers Market, Inc. 0.3 % Vaxcyte, Inc. 0.3 % Fluor Corp. 0.3 % Applied Industrial Technologies, Inc. 0.3 % HealthEquity, Inc. 0.3 % SPS Commerce, Inc. 0.3 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings Insmed, Inc. 0.4 % FTAI Aviation Ltd. 0.4 % Abercrombie & Fitch Co., Class A 0.4 % Fabrinet 0.4 % Sprouts Farmers Market, Inc. 0.3 % Vaxcyte, Inc. 0.3 % Fluor Corp. 0.3 % Applied Industrial Technologies, Inc. 0.3 % HealthEquity, Inc. 0.3 % SPS Commerce, Inc. 0.3 % |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Balanced Fund $ 0.20 % |
| Expenses Paid, Amount | $ 10 |
| Expense Ratio, Percent | 0.20% |
| Net Assets | $ 79,535,457 |
| Holdings Count | Holding | 2 |
| Advisory Fees Paid, Amount | |
| Investment Company Portfolio Turnover | 5% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ N/A Portfolio turnover rate $ % |
| 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 Penn Series Index 500 Fund 60.2 % Penn Series Quality Bond Fund 39.8 % Asset Allocation Target |
| Largest Holdings [Text Block] | Top 10 Holdings Penn Series Index 500 Fund 60.2 % Penn Series Quality Bond Fund 39.8 % |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Emerging Markets Equity Fund $ 1.35 % |
| Expenses Paid, Amount | $ 67 |
| Expense Ratio, Percent | 1.35% |
| Material Change Date | Jun. 01, 2024 |
| Net Assets | $ 83,208,851 |
| Holdings Count | Holding | 62 |
| Advisory Fees Paid, Amount | $ 357,595 |
| Investment Company Portfolio Turnover | 39% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Taiwan Semiconductor Manufacturing Co., Ltd. 9.5 % Tencent Holdings Ltd. 6.8 % Samsung Electronics Co., Ltd. 4.3 % Reliance Industries Ltd. 3.4 % NU Holdings Ltd., Class A 2.7 % Cipla Ltd. 2.6 % Eicher Motors Ltd. 2.6 % Raia Drogasil S.A. 2.6 % Accton Technology Corp. 2.6 % President Chain Store Corp. 2.6 % Sector Allocation 1 Country Allocation 1 |
| Largest Holdings [Text Block] | Top 10 Holdings Taiwan Semiconductor Manufacturing Co., Ltd. 9.5 % Tencent Holdings Ltd. 6.8 % Samsung Electronics Co., Ltd. 4.3 % Reliance Industries Ltd. 3.4 % NU Holdings Ltd., Class A 2.7 % Cipla Ltd. 2.6 % Eicher Motors Ltd. 2.6 % Raia Drogasil S.A. 2.6 % Accton Technology Corp. 2.6 % President Chain Store Corp. 2.6 % |
| Material Fund Change [Text Block] | Material Fund Changes Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.83% of the Fund’s average daily net assets. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.87% of the Fund’s average daily net assets. |
| Material Fund Change Expenses [Text Block] | Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.83% of the Fund’s average daily net assets. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.87% of the Fund’s average daily net assets. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Moderate Allocation Fund $ 0.30 % |
| Expenses Paid, Amount | $ 15 |
| Expense Ratio, Percent | 0.30% |
| Net Assets | $ 207,590,390 |
| Holdings Count | Holding | 18 |
| Advisory Fees Paid, Amount | $ 125,711 |
| Investment Company Portfolio Turnover | 3% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Penn Series Quality Bond Fund 23.8 % Penn Series Index 500 Fund 18.1 % Penn Series Flexibly Managed Fund 9.0 % Penn Series Limited Maturity Bond Fund 9.0 % Penn Series Mid Core Value Fund 5.0 % Penn Series Real Estate Securities Fund 4.0 % Penn Series Emerging Markets Equity Fund 4.0 % Penn Series Developed International Index Fund 4.0 % Penn Series High Yield Bond Fund 4.0 % Penn Series International Equity Fund 4.0 % Asset Allocation Target |
| Largest Holdings [Text Block] | Top 10 Holdings Penn Series Quality Bond Fund 23.8 % Penn Series Index 500 Fund 18.1 % Penn Series Flexibly Managed Fund 9.0 % Penn Series Limited Maturity Bond Fund 9.0 % Penn Series Mid Core Value Fund 5.0 % Penn Series Real Estate Securities Fund 4.0 % Penn Series Emerging Markets Equity Fund 4.0 % Penn Series Developed International Index Fund 4.0 % Penn Series High Yield Bond Fund 4.0 % Penn Series International Equity Fund 4.0 % |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Index 500 Fund $ 0.34 % |
| Expenses Paid, Amount | $ 18 |
| Expense Ratio, Percent | 0.34% |
| Net Assets | $ 812,175,806 |
| Holdings Count | Holding | 505 |
| Advisory Fees Paid, Amount | $ 483,593 |
| Investment Company Portfolio Turnover | 1% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Microsoft Corp. 7.2 % NVIDIA Corp. 6.6 % Apple, Inc. 6.6 % Amazon.com, Inc. 3.8 % Meta Platforms, Inc., Class A 2.4 % Alphabet, Inc., Class A 2.3 % Alphabet, Inc., Class C 1.9 % Berkshire Hathaway, Inc., Class B 1.6 % Eli Lilly & Co. 1.6 % Broadcom, Inc. 1.5 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings Microsoft Corp. 7.2 % NVIDIA Corp. 6.6 % Apple, Inc. 6.6 % Amazon.com, Inc. 3.8 % Meta Platforms, Inc., Class A 2.4 % Alphabet, Inc., Class A 2.3 % Alphabet, Inc., Class C 1.9 % Berkshire Hathaway, Inc., Class B 1.6 % Eli Lilly & Co. 1.6 % Broadcom, Inc. 1.5 % |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Large Core Growth Fund $ 0.85 % |
| Expenses Paid, Amount | $ 45 |
| Expense Ratio, Percent | 0.85% |
| Net Assets | $ 133,383,809 |
| Holdings Count | Holding | 38 |
| Advisory Fees Paid, Amount | $ 361,311 |
| Investment Company Portfolio Turnover | 9% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Microsoft Corp. 12.6 % NVIDIA Corp. 10.3 % Apple, Inc. 6.6 % Alphabet, Inc., Class A 6.4 % Amazon.com, Inc. 5.3 % Visa, Inc., Class A 4.3 % UnitedHealth Group, Inc. 3.8 % Motorola Solutions, Inc. 3.4 % Intuit, Inc. 3.3 % Intercontinental Exchange, Inc. 2.9 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings Microsoft Corp. 12.6 % NVIDIA Corp. 10.3 % Apple, Inc. 6.6 % Alphabet, Inc., Class A 6.4 % Amazon.com, Inc. 5.3 % Visa, Inc., Class A 4.3 % UnitedHealth Group, Inc. 3.8 % Motorola Solutions, Inc. 3.4 % Intuit, Inc. 3.3 % Intercontinental Exchange, Inc. 2.9 % 1 |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Moderately Aggressive Allocation Fund $ 0.30 % |
| Expenses Paid, Amount | $ 15 |
| Expense Ratio, Percent | 0.30% |
| Net Assets | $ 202,596,371 |
| Holdings Count | Holding | 20 |
| Advisory Fees Paid, Amount | $ 120,803 |
| Investment Company Portfolio Turnover | 5% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Penn Series Index 500 Fund 22.0 % Penn Series Quality Bond Fund 10.9 % Penn Series Flexibly Managed Fund 9.0 % Penn Series International Equity Fund 6.9 % Penn Series Large Cap Value Fund 6.1 % Penn Series Limited Maturity Bond Fund 6.0 % Penn Series Real Estate Securities Fund 5.0 % Penn Series Mid Core Value Fund 5.0 % Penn Series Large Core Value Fund 5.0 % Penn Series Developed International Index Fund 5.0 % Asset Allocation Target |
| Largest Holdings [Text Block] | Top 10 Holdings Penn Series Index 500 Fund 22.0 % Penn Series Quality Bond Fund 10.9 % Penn Series Flexibly Managed Fund 9.0 % Penn Series International Equity Fund 6.9 % Penn Series Large Cap Value Fund 6.1 % Penn Series Limited Maturity Bond Fund 6.0 % Penn Series Real Estate Securities Fund 5.0 % Penn Series Mid Core Value Fund 5.0 % Penn Series Large Core Value Fund 5.0 % Penn Series Developed International Index Fund 5.0 % |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Moderately Conservative Allocation Fund $ 0.32 % |
| Expenses Paid, Amount | $ 16 |
| Expense Ratio, Percent | 0.32% |
| Net Assets | $ 78,318,629 |
| Holdings Count | Holding | 16 |
| Advisory Fees Paid, Amount | $ 47,175 |
| Investment Company Portfolio Turnover | 7% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Penn Series Quality Bond Fund 32.8 % Penn Series Limited Maturity Bond Fund 19.0 % Penn Series Index 500 Fund 11.1 % Penn Series Flexibly Managed Fund 8.0 % Penn Series High Yield Bond Fund 5.0 % Penn Series Real Estate Securities Fund 4.1 % Penn Series International Equity Fund 4.0 % Penn Series Large Cap Value Fund 3.0 % Penn Series Mid Core Value Fund 3.0 % Penn Series Large Core Value Fund 3.0 % Asset Allocation Target |
| Largest Holdings [Text Block] | Top 10 Holdings Penn Series Quality Bond Fund 32.8 % Penn Series Limited Maturity Bond Fund 19.0 % Penn Series Index 500 Fund 11.1 % Penn Series Flexibly Managed Fund 8.0 % Penn Series High Yield Bond Fund 5.0 % Penn Series Real Estate Securities Fund 4.1 % Penn Series International Equity Fund 4.0 % Penn Series Large Cap Value Fund 3.0 % Penn Series Mid Core Value Fund 3.0 % Penn Series Large Core Value Fund 3.0 % |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage SMID Cap Value Fund $ 1.20 % |
| Expenses Paid, Amount | $ 60 |
| Expense Ratio, Percent | 1.20% |
| Material Change Date | Jun. 01, 2024 |
| Net Assets | $ 48,649,923 |
| Holdings Count | Holding | 95 |
| Advisory Fees Paid, Amount | $ 205,822 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 First Citizens BancShares, Inc., Class A 1.6 % MasTec, Inc. 1.6 % Jones Lang LaSalle, Inc. 1.6 % ArcBest Corp. 1.5 % ADT, Inc. 1.4 % Cameco Corp. 1.4 % Nexstar Media Group, Inc. 1.4 % BorgWarner, Inc. 1.4 % AutoNation, Inc. 1.4 % Fluor Corp. 1.3 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings First Citizens BancShares, Inc., Class A 1.6 % MasTec, Inc. 1.6 % Jones Lang LaSalle, Inc. 1.6 % ArcBest Corp. 1.5 % ADT, Inc. 1.4 % Cameco Corp. 1.4 % Nexstar Media Group, Inc. 1.4 % BorgWarner, Inc. 1.4 % AutoNation, Inc. 1.4 % Fluor Corp. 1.3 % |
| Material Fund Change [Text Block] | Material Fund Changes Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.80% of the Fund’s average daily net assets. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.84% of the Fund’s average daily net assets. |
| Material Fund Change Expenses [Text Block] | Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.80% of the Fund’s average daily net assets. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.84% of the Fund’s average daily net assets. |
| Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage International Equity Fund $ 1.09 % |
| Expenses Paid, Amount | $ 55 |
| Expense Ratio, Percent | 1.09% |
| Material Change Date | Jun. 01, 2024 |
| Net Assets | $ 241,156,582 |
| Holdings Count | Holding | 43 |
| Advisory Fees Paid, Amount | $ 1,006,356 |
| Investment Company Portfolio Turnover | 62% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Taiwan Semiconductor Manufacturing Co., Ltd., ADR 6.4 % Constellation Software, Inc. 6.1 % Wolters Kluwer N.V. 5.5 % RELX PLC 4.9 % SAP S.E. 4.6 % Alcon, Inc. 4.5 % Halma PLC 3.6 % Experian PLC 3.6 % London Stock Exchange Group PLC 3.4 % Schneider Electric S.E. 3.4 % Sector Allocation 1 Country Allocation 1 |
| Largest Holdings [Text Block] | Top 10 Holdings Taiwan Semiconductor Manufacturing Co., Ltd., ADR 6.4 % Constellation Software, Inc. 6.1 % Wolters Kluwer N.V. 5.5 % RELX PLC 4.9 % SAP S.E. 4.6 % Alcon, Inc. 4.5 % Halma PLC 3.6 % Experian PLC 3.6 % London Stock Exchange Group PLC 3.4 % Schneider Electric S.E. 3.4 % |
| Material Fund Change [Text Block] | Material Fund Changes Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.81% of the Fund’s average daily net assets up to $200 million, and 0.61% of the Fund’s average daily net assets over $200 million. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.83% of the Fund’s average daily net assets up to $227 million, and 0.63% of the Fund’s average daily net assets over $227 million. |
| Material Fund Change Expenses [Text Block] | Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.81% of the Fund’s average daily net assets up to $200 million, and 0.61% of the Fund’s average daily net assets over $200 million. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.83% of the Fund’s average daily net assets up to $227 million, and 0.63% of the Fund’s average daily net assets over $227 million. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Aggressive Allocation Fund $ 0.33 % |
| Expenses Paid, Amount | $ 17 |
| Expense Ratio, Percent | 0.33% |
| Net Assets | $ 59,424,384 |
| Holdings Count | Holding | 21 |
| Advisory Fees Paid, Amount | $ 35,764 |
| Investment Company Portfolio Turnover | 7% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Penn Series Index 500 Fund 25.0 % Penn Series Flexibly Managed Fund 9.0 % Penn Series International Equity Fund 8.9 % Penn Series Large Cap Value Fund 6.1 % Penn Series Quality Bond Fund 5.9 % Penn Series Real Estate Securities Fund 5.0 % Penn Series Mid Core Value Fund 5.0 % Penn Series Emerging Markets Equity Fund 5.0 % Penn Series Large Core Value Fund 5.0 % Penn Series Developed International Index Fund 5.0 % Asset Allocation Target |
| Largest Holdings [Text Block] | Top 10 Holdings Penn Series Index 500 Fund 25.0 % Penn Series Flexibly Managed Fund 9.0 % Penn Series International Equity Fund 8.9 % Penn Series Large Cap Value Fund 6.1 % Penn Series Quality Bond Fund 5.9 % Penn Series Real Estate Securities Fund 5.0 % Penn Series Mid Core Value Fund 5.0 % Penn Series Emerging Markets Equity Fund 5.0 % Penn Series Large Core Value Fund 5.0 % Penn Series Developed International Index Fund 5.0 % |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Large Cap Growth Fund $ 0.87 % |
| Expenses Paid, Amount | $ 46 |
| Expense Ratio, Percent | 0.87% |
| Material Change Date | Jun. 01, 2024 |
| Net Assets | $ 70,238,991 |
| Holdings Count | Holding | 57 |
| Advisory Fees Paid, Amount | $ 187,300 |
| Investment Company Portfolio Turnover | 12% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Microsoft Corp. 14.5 % Alphabet, Inc., Class A 6.1 % Apple, Inc. 5.7 % NVIDIA Corp. 5.3 % Visa, Inc., Class A 4.1 % Accenture PLC, Class A 3.1 % Church & Dwight Co., Inc. 2.3 % Taiwan Semiconductor Manufacturing Co., Ltd., ADR 2.2 % Aon PLC, Class A 2.1 % Agilent Technologies, Inc. 2.0 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings Microsoft Corp. 14.5 % Alphabet, Inc., Class A 6.1 % Apple, Inc. 5.7 % NVIDIA Corp. 5.3 % Visa, Inc., Class A 4.1 % Accenture PLC, Class A 3.1 % Church & Dwight Co., Inc. 2.3 % Taiwan Semiconductor Manufacturing Co., Ltd., ADR 2.2 % Aon PLC, Class A 2.1 % Agilent Technologies, Inc. 2.0 % |
| Material Fund Change [Text Block] | Material Fund Changes Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.53% of the Fund’s average daily net assets. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.55% of the Fund’s average daily net assets. |
| Material Fund Change Expenses [Text Block] | Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.53% of the Fund’s average daily net assets. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.55% of the Fund’s average daily net assets. |
| Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Quality Bond Fund $ 0.68 % |
| Expenses Paid, Amount | $ 34 |
| Expense Ratio, Percent | 0.68% |
| Net Assets | $ 388,628,983 |
| Holdings Count | Holding | 131 |
| Advisory Fees Paid, Amount | $ 863,740 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % Weighted Average Maturity 8.7 Years Effective Duration 5.6 Years |
| 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 Residential Mortgage Backed Securities 38.5 % Corporate Bonds 24.1 % Commercial Mortgage Backed Securities 15.0 % Asset Backed Securities 11.3 % U.S. Treasury Obligations 9.9 % Municipal Bonds 0.7 % Money Market Funds 0.5 % Bond Quality Allocation 1 1 Note: When a security is rated differently by three rating agencies, the median rating is used; when rated differently by two rating agencies, the lower rating is used. |
| Credit Quality Explanation [Text Block] | When a security is rated differently by three rating agencies, the median rating is used; when rated differently by two rating agencies, the lower rating is used. |
| Credit Ratings Selection [Text Block] | Source: Independent Rating Agencies such as Moody’s, S&P, Fitch, etc. |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Large Cap Value Fund $ 0.93 % |
| Expenses Paid, Amount | $ 48 |
| Expense Ratio, Percent | 0.93% |
| Net Assets | $ 168,725,210 |
| Holdings Count | Holding | 69 |
| Advisory Fees Paid, Amount | $ 564,075 |
| Investment Company Portfolio Turnover | 28% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 JPMorgan Chase & Co. 3.7 % Regeneron Pharmaceuticals, Inc. 3.7 % Walmart, Inc. 3.6 % Berkshire Hathaway, Inc., Class B 3.6 % Wells Fargo & Co. 3.5 % Elevance Health, Inc. 3.4 % QUALCOMM, Inc. 3.0 % Philip Morris International, Inc. 3.0 % Cencora, Inc. 2.9 % Fiserv, Inc. 2.7 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings JPMorgan Chase & Co. 3.7 % Regeneron Pharmaceuticals, Inc. 3.7 % Walmart, Inc. 3.6 % Berkshire Hathaway, Inc., Class B 3.6 % Wells Fargo & Co. 3.5 % Elevance Health, Inc. 3.4 % QUALCOMM, Inc. 3.0 % Philip Morris International, Inc. 3.0 % Cencora, Inc. 2.9 % Fiserv, Inc. 2.7 % |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Limited Maturity Bond Fund $ 0.71 % |
| Expenses Paid, Amount | $ 36 |
| Expense Ratio, Percent | 0.71% |
| Net Assets | $ 189,191,123 |
| Holdings Count | Holding | 123 |
| Advisory Fees Paid, Amount | $ 427,258 |
| Investment Company Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % Weighted Average Maturity 3.5 Years Effective Duration 1.8 Years |
| 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 Corporate Bonds 38.2 % Asset Backed Securities 23.4 % Commercial Mortgage Backed Securities 16.7 % Residential Mortgage Backed Securities 14.9 % U.S. Treasury Obligations 6.3 % Money Market Funds 0.5 % Bond Quality Allocation 1 1 Note: When a security is rated differently by three rating agencies, the median rating is used; when rated differently by two rating agencies, the lower rating is used. |
| Credit Quality Explanation [Text Block] | Note: When a security is rated differently by three rating agencies, the median rating is used; when rated differently by two rating agencies, the lower rating is used. |
| Credit Ratings Selection [Text Block] | Source: Independent Rating Agencies such as Moody’s, S&P, Fitch, etc |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Mid Cap Value Fund $ 0.83 % |
| Expenses Paid, Amount | $ 43 |
| Expense Ratio, Percent | 0.83% |
| Material Change Date | Jun. 01, 2024 |
| Net Assets | $ 89,523,296 |
| Holdings Count | Holding | 71 |
| Advisory Fees Paid, Amount | $ 245,781 |
| Investment Company Portfolio Turnover | 18% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Casey's General Stores, Inc. 2.9 % Entergy Corp. 2.5 % Freeport-McMoRan, Inc. 2.4 % Alliant Energy Corp. 2.4 % Fidelity National Information Services, Inc. 2.3 % Marathon Oil Corp. 2.3 % Chesapeake Energy Corp. 2.3 % Globus Medical, Inc., Class A 2.2 % Lamar Advertising Co., Class A 2.1 % The Hartford Financial Services Group, Inc. 2.0 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings Casey's General Stores, Inc. 2.9 % Entergy Corp. 2.5 % Freeport-McMoRan, Inc. 2.4 % Alliant Energy Corp. 2.4 % Fidelity National Information Services, Inc. 2.3 % Marathon Oil Corp. 2.3 % Chesapeake Energy Corp. 2.3 % Globus Medical, Inc., Class A 2.2 % Lamar Advertising Co., Class A 2.1 % The Hartford Financial Services Group, Inc. 2.0 % |
| Material Fund Change [Text Block] | Material Fund Changes Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.54% of the Fund’s average daily net assets up to $250 million, 0.525% of the Fund’s average daily net assets on the next $250 million, 0.50% of the Fund’s average daily net assets on the next $250 million, 0.475% of the Fund’s average daily net assets on the next $250 million, 0.45% of the Fund’s average daily net assets on the next $500 million, and 0.425% of the Fund’s average daily net assets over $1.5 billion. Prior to June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.55% of the Fund’s average daily net assets up to $250 million, 0.525% of the Fund’s average daily net assets on the next $250 million, 0.50% of the Fund’s average daily net assets on the next $250 million, 0.475% of the Fund’s average daily net assets on the next $250 million, 0.45% of the Fund’s average daily net assets on the next $500 million, and 0.425% of the Fund’s average daily net assets over $1.5 billion. |
| Material Fund Change Expenses [Text Block] | Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.54% of the Fund’s average daily net assets up to $250 million, 0.525% of the Fund’s average daily net assets on the next $250 million, 0.50% of the Fund’s average daily net assets on the next $250 million, 0.475% of the Fund’s average daily net assets on the next $250 million, 0.45% of the Fund’s average daily net assets on the next $500 million, and 0.425% of the Fund’s average daily net assets over $1.5 billion. Prior to June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.55% of the Fund’s average daily net assets up to $250 million, 0.525% of the Fund’s average daily net assets on the next $250 million, 0.50% of the Fund’s average daily net assets on the next $250 million, 0.475% of the Fund’s average daily net assets on the next $250 million, 0.45% of the Fund’s average daily net assets on the next $500 million, and 0.425% of the Fund’s average daily net assets over $1.5 billion. |
| Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Real Estate Securities Fund $ 0.97 % |
| Expenses Paid, Amount | $ 48 |
| Expense Ratio, Percent | 0.97% |
| Net Assets | $ 106,499,665 |
| Holdings Count | Holding | 34 |
| Advisory Fees Paid, Amount | $ 367,504 |
| Investment Company Portfolio Turnover | 14% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Welltower, Inc. 7.7 % Digital Realty Trust, Inc. 7.6 % Prologis, Inc. 7.1 % Simon Property Group, Inc. 6.4 % American Tower Corp. 5.1 % Invitation Homes, Inc. 5.0 % Crown Castle, Inc. 4.9 % Iron Mountain, Inc. 4.8 % Equinix, Inc. 4.1 % VICI Properties, Inc. 4.1 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings Welltower, Inc. 7.7 % Digital Realty Trust, Inc. 7.6 % Prologis, Inc. 7.1 % Simon Property Group, Inc. 6.4 % American Tower Corp. 5.1 % Invitation Homes, Inc. 5.0 % Crown Castle, Inc. 4.9 % Iron Mountain, Inc. 4.8 % Equinix, Inc. 4.1 % VICI Properties, Inc. 4.1 % |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Large Growth Stock Fund $ 0.92 % |
| Expenses Paid, Amount | $ 50 |
| Expense Ratio, Percent | 0.92% |
| Net Assets | $ 358,368,903 |
| Holdings Count | Holding | 69 |
| Advisory Fees Paid, Amount | $ 1,138,765 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Microsoft Corp. 13.6 % NVIDIA Corp. 12.5 % Apple, Inc. 8.5 % Amazon.com, Inc. 7.7 % Alphabet, Inc., Class A 5.7 % Meta Platforms, Inc., Class A 4.9 % Eli Lilly & Co. 3.7 % Visa, Inc., Class A 2.5 % Mastercard, Inc., Class A 2.1 % Netflix, Inc. 1.8 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings Microsoft Corp. 13.6 % NVIDIA Corp. 12.5 % Apple, Inc. 8.5 % Amazon.com, Inc. 7.7 % Alphabet, Inc., Class A 5.7 % Meta Platforms, Inc., Class A 4.9 % Eli Lilly & Co. 3.7 % Visa, Inc., Class A 2.5 % Mastercard, Inc., Class A 2.1 % Netflix, Inc. 1.8 % |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Developed International Index Fund $ 0.93 % |
| Expenses Paid, Amount | $ 47 |
| Expense Ratio, Percent | 0.93% |
| Net Assets | $ 81,989,064 |
| Holdings Count | Holding | 754 |
| Advisory Fees Paid, Amount | $ 126,922 |
| Investment Company Portfolio Turnover | 1% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Novo Nordisk A/S, Class B 2.7 % ASML Holding N.V. 2.4 % Nestle S.A. 1.6 % AstraZeneca PLC 1.4 % Shell PLC 1.3 % Toyota Motor Corp. 1.3 % LVMH Moet Hennessy Louis Vuitton S.E. 1.2 % Novartis AG 1.2 % SAP S.E. 1.2 % Roche Holding AG 1.1 % Sector Allocation 1 Country Allocation 1 |
| Largest Holdings [Text Block] | Top 10 Holdings Novo Nordisk A/S, Class B 2.7 % ASML Holding N.V. 2.4 % Nestle S.A. 1.6 % AstraZeneca PLC 1.4 % Shell PLC 1.3 % Toyota Motor Corp. 1.3 % LVMH Moet Hennessy Louis Vuitton S.E. 1.2 % Novartis AG 1.2 % SAP S.E. 1.2 % Roche Holding AG 1.1 % |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Money Market Fund $ 0.58 % |
| Expenses Paid, Amount | $ 29 |
| Expense Ratio, Percent | 0.58% |
| Net Assets | $ 137,719,977 |
| Holdings Count | Holding | 14 |
| Advisory Fees Paid, Amount | $ 235,541 |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings $ Total advisory fee paid $ |
| 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 Federal Home Loan Mortgage Corp. 7.3 % Federal National Mortgage 7.3 % Federal Farm Credit Banks 7.3 % Federal Home Loan Mortgage Corp. 7.2 % Federal Home Loan Banks 7.2 % Tennessee Valley Authority 7.2 % U.S. Treasury Bills 7.2 % Federal Farm Credit Banks 7.2 % U.S. Treasury Bills 7.2 % U.S. Treasury Bills 7.2 % |
| Largest Holdings [Text Block] | Top 10 Holdings Federal Home Loan Mortgage Corp. 7.3 % Federal National Mortgage 7.3 % Federal Farm Credit Banks 7.3 % Federal Home Loan Mortgage Corp. 7.2 % Federal Home Loan Banks 7.2 % Tennessee Valley Authority 7.2 % U.S. Treasury Bills 7.2 % Federal Farm Credit Banks 7.2 % U.S. Treasury Bills 7.2 % U.S. Treasury Bills 7.2 % |
| 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. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Mid Cap Growth Fund $ 0.97 % |
| Expenses Paid, Amount | $ 48 |
| Expense Ratio, Percent | 0.97% |
| Material Change Date | Jun. 01, 2024 |
| Net Assets | $ 138,563,153 |
| Holdings Count | Holding | 68 |
| Advisory Fees Paid, Amount | $ 504,428 |
| Investment Company Portfolio Turnover | 14% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 CoStar Group, Inc. 4.0 % Pinterest, Inc., Class A 3.4 % Monolithic Power Systems, Inc. 3.0 % The Trade Desk, Inc., Class A 2.5 % Teradyne, Inc. 2.4 % Universal Display Corp. 2.3 % Dexcom, Inc. 2.2 % Tyler Technologies, Inc. 2.2 % HEICO Corp., Class A 2.2 % Floor & Decor Holdings, Inc., Class A 2.1 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings CoStar Group, Inc. 4.0 % Pinterest, Inc., Class A 3.4 % Monolithic Power Systems, Inc. 3.0 % The Trade Desk, Inc., Class A 2.5 % Teradyne, Inc. 2.4 % Universal Display Corp. 2.3 % Dexcom, Inc. 2.2 % Tyler Technologies, Inc. 2.2 % HEICO Corp., Class A 2.2 % Floor & Decor Holdings, Inc., Class A 2.1 % |
| Material Fund Change [Text Block] | Material Fund Changes Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.68% of the Fund’s average daily net assets. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.70% of the Fund’s average daily net assets. |
| Material Fund Change Expenses [Text Block] | Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.68% of the Fund’s average daily net assets. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.70% of the Fund’s average daily net assets. |
| Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Mid Core Value Fund $ 1.04 % |
| Expenses Paid, Amount | $ 52 |
| Expense Ratio, Percent | 1.04% |
| Material Change Date | Jun. 01, 2024 |
| Net Assets | $ 77,622,563 |
| Holdings Count | Holding | 109 |
| Advisory Fees Paid, Amount | $ 273,021 |
| Investment Company Portfolio Turnover | 28% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Zimmer Biomet Holdings, Inc. 3.0 % The Bank of New York Mellon Corp. 2.2 % Conagra Brands, Inc. 2.1 % Enterprise Products Partners LP 2.0 % Henry Schein, Inc. 1.9 % Northern Trust Corp. 1.9 % Koninklijke Ahold Delhaize N.V. 1.9 % Willis Towers Watson PLC 1.9 % Edison International 1.8 % Quest Diagnostics, Inc. 1.8 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings Zimmer Biomet Holdings, Inc. 3.0 % The Bank of New York Mellon Corp. 2.2 % Conagra Brands, Inc. 2.1 % Enterprise Products Partners LP 2.0 % Henry Schein, Inc. 1.9 % Northern Trust Corp. 1.9 % Koninklijke Ahold Delhaize N.V. 1.9 % Willis Towers Watson PLC 1.9 % Edison International 1.8 % Quest Diagnostics, Inc. 1.8 % |
| Material Fund Change [Text Block] | Material Fund Changes Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.68% of the Fund’s average daily net assets. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.69% of the Fund’s average daily net assets. |
| Material Fund Change Expenses [Text Block] | Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.68% of the Fund’s average daily net assets. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.69% of the Fund’s average daily net assets. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Large Core Value Fund $ 0.93 % |
| Expenses Paid, Amount | $ 48 |
| Expense Ratio, Percent | 0.93% |
| Material Change Date | Jun. 01, 2024 |
| Net Assets | $ 135,367,253 |
| Holdings Count | Holding | 58 |
| Advisory Fees Paid, Amount | $ 452,805 |
| Investment Company Portfolio Turnover | 23% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 The Charles Schwab Corp. 3.5 % Chevron Corp. 3.2 % NextEra Energy, Inc. 3.0 % Micron Technology, Inc. 3.0 % Thermo Fisher Scientific, Inc. 2.8 % Reinsurance Group of America, Inc. 2.7 % Wells Fargo & Co. 2.6 % Hasbro, Inc. 2.6 % Mid-America Apartment Communities, Inc. 2.6 % BJ's Wholesale Club Holdings, Inc. 2.4 % 1 |
| Largest Holdings [Text Block] | Top 10 Holdings The Charles Schwab Corp. 3.5 % Chevron Corp. 3.2 % NextEra Energy, Inc. 3.0 % Micron Technology, Inc. 3.0 % Thermo Fisher Scientific, Inc. 2.8 % Reinsurance Group of America, Inc. 2.7 % Wells Fargo & Co. 2.6 % Hasbro, Inc. 2.6 % Mid-America Apartment Communities, Inc. 2.6 % BJ's Wholesale Club Holdings, Inc. 2.4 % |
| Material Fund Change [Text Block] | Material Fund Changes Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.64% of the Fund’s average daily net assets up to $150 million, 0.62% of the Fund’s average daily net assets on the next $250 million, and 0.60% of the Fund’s average daily net assets over $400 million. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.67% of the Fund’s average daily net assets up to $150 million, 0.65% of the Fund’s average daily net assets on the next $250 million, and 0.60% of the Fund’s average daily net assets over $400 million. |
| Material Fund Change Expenses [Text Block] | Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.64% of the Fund’s average daily net assets up to $150 million, 0.62% of the Fund’s average daily net assets on the next $250 million, and 0.60% of the Fund’s average daily net assets over $400 million. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.67% of the Fund’s average daily net assets up to $150 million, 0.65% of the Fund’s average daily net assets on the next $250 million, and 0.60% of the Fund’s average daily net assets over $400 million. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage SMID Cap Growth Fund $ 1.04 % |
| Expenses Paid, Amount | $ 54 |
| Expense Ratio, Percent | 1.04% |
| Material Change Date | Jun. 01, 2024 |
| Net Assets | $ 70,594,433 |
| Holdings Count | Holding | 99 |
| Advisory Fees Paid, Amount | $ 273,004 |
| Investment Company Portfolio Turnover | 31% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 BJ's Wholesale Club Holdings, Inc. 2.0 % Natera, Inc. 2.0 % Manhattan Associates, Inc. 2.0 % AAON, Inc. 2.0 % Texas Roadhouse, Inc. 1.9 % Wingstop, Inc. 1.9 % MACOM Technology Solutions Holdings, Inc. 1.9 % Domino's Pizza, Inc. 1.8 % Ashland, Inc. 1.7 % Tetra Tech, Inc. 1.7 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings BJ's Wholesale Club Holdings, Inc. 2.0 % Natera, Inc. 2.0 % Manhattan Associates, Inc. 2.0 % AAON, Inc. 2.0 % Texas Roadhouse, Inc. 1.9 % Wingstop, Inc. 1.9 % MACOM Technology Solutions Holdings, Inc. 1.9 % Domino's Pizza, Inc. 1.8 % Ashland, Inc. 1.7 % Tetra Tech, Inc. 1.7 % |
| Material Fund Change [Text Block] | Material Fund Changes Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.73% of the Fund’s average daily net assets. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.75% of the Fund’s average daily net assets. |
| Material Fund Change Expenses [Text Block] | Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.73% of the Fund’s average daily net assets. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.75% of the Fund’s average daily net assets. |
| Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period. |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Conservative Allocation Fund $ 0.35 % |
| Expenses Paid, Amount | $ 18 |
| Expense Ratio, Percent | 0.35% |
| Net Assets | $ 45,665,477 |
| Holdings Count | Holding | 10 |
| Advisory Fees Paid, Amount | $ 27,171 |
| Investment Company Portfolio Turnover | 6% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Penn Series Quality Bond Fund 41.8 % Penn Series Limited Maturity Bond Fund 30.0 % Penn Series Flexibly Managed Fund 8.1 % Penn Series Index 500 Fund 7.0 % Penn Series High Yield Bond Fund 5.0 % Penn Series Real Estate Securities Fund 2.0 % Penn Series Mid Core Value Fund 2.0 % Penn Series Large Core Value Fund 2.0 % Penn Series Developed International Index Fund 2.0 % Asset Allocation Target |
| Largest Holdings [Text Block] | Top 10 Holdings Penn Series Quality Bond Fund 41.8 % Penn Series Limited Maturity Bond Fund 30.0 % Penn Series Flexibly Managed Fund 8.1 % Penn Series Index 500 Fund 7.0 % Penn Series High Yield Bond Fund 5.0 % Penn Series Real Estate Securities Fund 2.0 % Penn Series Mid Core Value Fund 2.0 % Penn Series Large Core Value Fund 2.0 % Penn Series Developed International Index Fund 2.0 % |
| 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, 2024 to June 30, 2024. |
| 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 |
| 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 Fund Cost of $10,000 investment Costs paid as a percentage Small Cap Value Fund $ 1.02 % |
| Expenses Paid, Amount | $ 51 |
| Expense Ratio, Percent | 1.02% |
| Material Change Date | Jun. 01, 2024 |
| Net Assets | $ 147,224,249 |
| Holdings Count | Holding | 191 |
| Advisory Fees Paid, Amount | $ 534,576 |
| Investment Company Portfolio Turnover | 48% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ % Total number of portfolio holdings $ % Total advisory fee paid $ % Portfolio turnover rate $ % |
| 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 Meritage Homes Corp. 1.5 % SITE Centers Corp. 1.4 % Gates Industrial Corp. PLC 1.3 % Ameris Bancorp 1.3 % Home BancShares, Inc. 1.2 % Acadia Realty Trust 1.2 % ASGN, Inc. 1.1 % Commercial Metals Co. 1.1 % SouthState Corp. 1.0 % MGIC Investment Corp. 1.0 % Sector Allocation 1 1 |
| Largest Holdings [Text Block] | Top 10 Holdings Meritage Homes Corp. 1.5 % SITE Centers Corp. 1.4 % Gates Industrial Corp. PLC 1.3 % Ameris Bancorp 1.3 % Home BancShares, Inc. 1.2 % Acadia Realty Trust 1.2 % ASGN, Inc. 1.1 % Commercial Metals Co. 1.1 % SouthState Corp. 1.0 % MGIC Investment Corp. 1.0 % |
| Material Fund Change [Text Block] | Material Fund Changes Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.71% of the Fund’s average daily net assets up to $50 million, 0.68% of the Fund’s average daily net assets on the next $50 million, and 0.66% of the Fund’s average daily net assets over $100 million. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.75% of the Fund’s average daily net assets up to $50 million, 0.725% of the Fund’s average daily net assets on the next $50 million, and 0.70% of the Fund’s average daily net assets over $100 million. |
| Material Fund Change Expenses [Text Block] | Effective June 1, 2024, the Fund’s investment advisory fee was reduced and calculated daily at the annual rate of 0.71% of the Fund’s average daily net assets up to $50 million, 0.68% of the Fund’s average daily net assets on the next $50 million, and 0.66% of the Fund’s average daily net assets over $100 million. Prior to June 1, 2024, the Fund’s investment advisory fee was calculated daily at the annual rate of 0.75% of the Fund’s average daily net assets up to $50 million, 0.725% of the Fund’s average daily net assets on the next $50 million, and 0.70% of the Fund’s average daily net assets over $100 million. |
| Accountant Change Disagreements [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period. |
| Shareholder Report, Holdings (Details) | Jun. 30, 2024 | |
| C000018294 [Member] | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.50% | |
| C000018294 [Member] | Corporate Bond Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 90.50% | |
| C000018294 [Member] | Money Market Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.60% | |
| C000018294 [Member] | Loan Agreements [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.40% | |
| C000018297 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.40% | |
| C000018297 [Member] | U S Treasury Notes 4 500 11 15 33 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.70% | |
| C000018297 [Member] | U S Treasury Notes 4 000 02 15 34 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.50% | |
| C000018297 [Member] | Alphabet Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.70% | |
| C000018297 [Member] | Amazon com Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.70% | |
| C000018297 [Member] | UnitedHealth Group Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | |
| C000018297 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | |
| C000018297 [Member] | Danaher Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.10% | |
| C000018297 [Member] | U S Treasury Notes 4 375 05 15 34 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000018297 [Member] | Intuit Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000018297 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.90% | [1] |
| C000018297 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 20.50% | [1] |
| C000018297 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | [1] |
| C000018297 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.60% | [1] |
| C000018297 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.60% | [1] |
| C000018297 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.50% | [1] |
| C000018297 [Member] | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 33.40% | [1],[2] |
| C000018297 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.50% | [1] |
| C000018297 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | [1] |
| C000018297 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | [1] |
| C000018300 [Member] | Globus Medical Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.70% | |
| C000018300 [Member] | SS And C Technologies Holdings Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.20% | |
| C000018300 [Member] | Rentokil Initial PLC ADR [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000018300 [Member] | Stride Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.80% | |
| C000018300 [Member] | The Descartes Systems Group Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.80% | |
| C000018300 [Member] | LPL Financial Holdings Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.70% | |
| C000018300 [Member] | Blackbaud Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.70% | |
| C000018300 [Member] | Broadridge Financial Solutions Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.60% | |
| C000018300 [Member] | CSW Industrials Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.60% | |
| C000018300 [Member] | Crown Holdings Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.50% | |
| C000018300 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 29.80% | [3] |
| C000018300 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 19.10% | [3] |
| C000018300 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.30% | [3] |
| C000018300 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.20% | [3] |
| C000018300 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 22.10% | [3] |
| C000018300 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.40% | [3] |
| C000018300 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.70% | [3] |
| C000018300 [Member] | Real Estate Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.90% | [3] |
| C000018300 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.60% | [3] |
| C000018300 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.50% | [3] |
| C000018300 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.40% | [3] |
| C000063369 [Member] | Fluor Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | |
| C000063369 [Member] | Insmed Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.40% | |
| C000063369 [Member] | FTAI Aviation Ltd [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.40% | |
| C000063369 [Member] | Abercrombie And Fitch Co Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.40% | |
| C000063369 [Member] | Fabrinet [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.40% | |
| C000063369 [Member] | Sprouts Farmers Market Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | |
| C000063369 [Member] | Vaxcyte Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | |
| C000063369 [Member] | Applied Industrial Technologies Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | |
| C000063369 [Member] | HealthEquity Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | |
| C000063369 [Member] | SPS Commerce Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | |
| C000063369 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 17.20% | [4] |
| C000063369 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 13.30% | [4] |
| C000063369 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.50% | [4] |
| C000063369 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.90% | [4] |
| C000063369 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 17.30% | [4] |
| C000063369 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.70% | [4] |
| C000063369 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.70% | [4] |
| C000063369 [Member] | Real Estate Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6% | [4] |
| C000063369 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.70% | [4] |
| C000063369 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 17.20% | [4] |
| C000063369 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.50% | [4] |
| C000063372 [Member] | Penn Series Quality Bond Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 39.80% | |
| C000063372 [Member] | Penn Series Index 500 Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 60.20% | |
| C000063372 [Member] | Intermediate Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 40% | |
| C000063372 [Member] | Index 500 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 60% | |
| C000063375 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.50% | |
| C000063375 [Member] | Tencent Holdings Ltd [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.80% | |
| C000063375 [Member] | Samsung Electronics Co Ltd [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.30% | |
| C000063375 [Member] | Reliance Industries Ltd [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.40% | |
| C000063375 [Member] | NU Holdings Ltd Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.70% | |
| C000063375 [Member] | Cipla Ltd [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | |
| C000063375 [Member] | Eicher Motors Ltd [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | |
| C000063375 [Member] | Raia Drogasil S A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | |
| C000063375 [Member] | Accton Technology Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | |
| C000063375 [Member] | President Chain Store Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | |
| C000063375 [Member] | Other [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10.90% | |
| C000063375 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.40% | [5] |
| C000063375 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 27.40% | [5] |
| C000063375 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.90% | [5] |
| C000063375 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.30% | [5] |
| C000063375 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6% | [5] |
| C000063375 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.50% | [5] |
| C000063375 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.40% | [5] |
| C000063375 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.80% | [5] |
| C000063375 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 15% | [5] |
| C000063375 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.30% | [5] |
| C000063375 [Member] | BRAZIL | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.80% | |
| C000063375 [Member] | CHINA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.80% | |
| C000063375 [Member] | HONG KONG | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.30% | |
| C000063375 [Member] | INDONESIA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.10% | |
| C000063375 [Member] | INDIA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 22.10% | |
| C000063375 [Member] | KOREA, REPUBLIC OF | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10.10% | |
| C000063375 [Member] | MEXICO | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.50% | |
| C000063375 [Member] | TAIWAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 17.40% | |
| C000063375 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000063378 [Member] | Penn Series Quality Bond Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 23.80% | |
| C000063378 [Member] | Penn Series Index 500 Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 18.10% | |
| C000063378 [Member] | Penn Series Flexibly Managed Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9% | |
| C000063378 [Member] | Penn Series Limited Maturity Bond Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9% | |
| C000063378 [Member] | Penn Series Mid Core Value Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063378 [Member] | Penn Series Real Estate Securities Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | |
| C000063378 [Member] | Penn Series Emerging Markets Equity Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | |
| C000063378 [Member] | Penn Series Developed International Index Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | |
| C000063378 [Member] | Penn Series High Yield Bond Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | |
| C000063378 [Member] | Penn Series International Equity Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | |
| C000063378 [Member] | Intermediate Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 27% | |
| C000063378 [Member] | Large Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 18% | |
| C000063378 [Member] | Short Term Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9% | |
| C000063378 [Member] | International Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8% | |
| C000063378 [Member] | Mid Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063378 [Member] | Emerging Markets Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | |
| C000063378 [Member] | High Yield Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | |
| C000063378 [Member] | Domestic REITs [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | |
| C000063378 [Member] | Mid Cap Growth Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000063378 [Member] | Small Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063378 [Member] | Small Cap Growth Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063378 [Member] | Large Cap Growth Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14% | |
| C000018287 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | |
| C000018287 [Member] | Alphabet Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.30% | |
| C000018287 [Member] | Amazon com Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.80% | |
| C000018287 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.60% | |
| C000018287 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.60% | |
| C000018287 [Member] | Meta Platforms Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.40% | |
| C000018287 [Member] | Alphabet Inc Class C [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.90% | |
| C000018287 [Member] | Berkshire Hathaway Inc Class B [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.60% | |
| C000018287 [Member] | Eli Lilly And Co [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.60% | |
| C000018287 [Member] | Broadcom Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.50% | |
| C000018287 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.10% | [6] |
| C000018287 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 32.40% | [6] |
| C000018287 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.20% | [6] |
| C000018287 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10% | [6] |
| C000018287 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 11.70% | [6] |
| C000018287 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.60% | [6] |
| C000018287 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.30% | [6] |
| C000018287 [Member] | Real Estate Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.20% | [6] |
| C000018287 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.80% | [6] |
| C000018287 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 12.40% | [6] |
| C000018287 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.30% | [6] |
| C000063376 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 12.60% | |
| C000063376 [Member] | Alphabet Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.40% | |
| C000063376 [Member] | Amazon com Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.30% | |
| C000063376 [Member] | UnitedHealth Group Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.80% | |
| C000063376 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10.30% | |
| C000063376 [Member] | Intuit Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.30% | |
| C000063376 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.60% | |
| C000063376 [Member] | Visa Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.30% | |
| C000063376 [Member] | Motorola Solutions Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.40% | |
| C000063376 [Member] | Intercontinental Exchange Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.90% | |
| C000063376 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.20% | [7] |
| C000063376 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 45.10% | [7] |
| C000063376 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10.40% | [7] |
| C000063376 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10.90% | [7] |
| C000063376 [Member] | Real Estate Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.50% | [7] |
| C000063376 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | [7] |
| C000063376 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10.90% | [7] |
| C000063376 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.40% | [7] |
| C000063379 [Member] | Penn Series Quality Bond Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10.90% | |
| C000063379 [Member] | Penn Series Index 500 Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 22% | |
| C000063379 [Member] | Penn Series Flexibly Managed Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9% | |
| C000063379 [Member] | Penn Series Limited Maturity Bond Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6% | |
| C000063379 [Member] | Penn Series Mid Core Value Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063379 [Member] | Penn Series Real Estate Securities Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063379 [Member] | Penn Series Developed International Index Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063379 [Member] | Penn Series International Equity Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.90% | |
| C000063379 [Member] | Penn Series Large Cap Value Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.10% | |
| C000063379 [Member] | Penn Series Large Core Value Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063379 [Member] | Intermediate Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14% | |
| C000063379 [Member] | Large Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 25% | |
| C000063379 [Member] | Short Term Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6% | |
| C000063379 [Member] | International Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 12% | |
| C000063379 [Member] | Mid Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7% | |
| C000063379 [Member] | Emerging Markets Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | |
| C000063379 [Member] | Domestic REITs [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063379 [Member] | Mid Cap Growth Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063379 [Member] | Small Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000063379 [Member] | Small Cap Growth Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | |
| C000063379 [Member] | Large Cap Growth Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 18% | |
| C000063368 [Member] | Penn Series Quality Bond Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 32.80% | |
| C000063368 [Member] | Penn Series Index 500 Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 11.10% | |
| C000063368 [Member] | Penn Series Flexibly Managed Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8% | |
| C000063368 [Member] | Penn Series Limited Maturity Bond Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 19% | |
| C000063368 [Member] | Penn Series Mid Core Value Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000063368 [Member] | Penn Series Real Estate Securities Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.10% | |
| C000063368 [Member] | Penn Series High Yield Bond Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063368 [Member] | Penn Series International Equity Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | |
| C000063368 [Member] | Penn Series Large Cap Value Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000063368 [Member] | Penn Series Large Core Value Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000063368 [Member] | Intermediate Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 36% | |
| C000063368 [Member] | Large Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14% | |
| C000063368 [Member] | Short Term Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 19% | |
| C000063368 [Member] | International Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7% | |
| C000063368 [Member] | Mid Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000063368 [Member] | Emerging Markets Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1% | |
| C000063368 [Member] | High Yield Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063368 [Member] | Domestic REITs [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | |
| C000063368 [Member] | Small Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1% | |
| C000063368 [Member] | Small Cap Growth Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1% | |
| C000063368 [Member] | Large Cap Growth Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9% | |
| C000063371 [Member] | First Citizens BancShares Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.60% | |
| C000063371 [Member] | MasTec Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.60% | |
| C000063371 [Member] | Jones Lang LaSalle Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.60% | |
| C000063371 [Member] | ArcBest Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.50% | |
| C000063371 [Member] | ADT Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.40% | |
| C000063371 [Member] | Cameco Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.40% | |
| C000063371 [Member] | Nexstar Media Group Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.40% | |
| C000063371 [Member] | BorgWarner Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.40% | |
| C000063371 [Member] | AutoNation Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.40% | |
| C000063371 [Member] | Fluor Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.30% | |
| C000063371 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 21.30% | [8] |
| C000063371 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 12.80% | [8] |
| C000063371 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.40% | [8] |
| C000063371 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 16.70% | [8] |
| C000063371 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.50% | [8] |
| C000063371 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.50% | [8] |
| C000063371 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.80% | [8] |
| C000063371 [Member] | Real Estate Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | [8] |
| C000063371 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.30% | [8] |
| C000063371 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 19.90% | [8] |
| C000063371 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | [8] |
| C000018298 [Member] | Taiwan Semiconductor Manufacturing Co Ltd ADR [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.40% | |
| C000018298 [Member] | Constellation Software Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.10% | |
| C000018298 [Member] | Wolters Kluwer N V [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.50% | |
| C000018298 [Member] | RELX PLC [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.90% | |
| C000018298 [Member] | SAP S E [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.60% | |
| C000018298 [Member] | Alcon Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.50% | |
| C000018298 [Member] | Halma PLC [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.60% | |
| C000018298 [Member] | Experian PLC [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.60% | |
| C000018298 [Member] | London Stock Exchange Group PLC [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.40% | |
| C000018298 [Member] | Schneider Electric S E [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.40% | |
| C000018298 [Member] | Other [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 21.20% | |
| C000018298 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 32.30% | [9] |
| C000018298 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 27.70% | [9] |
| C000018298 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | [9] |
| C000018298 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.40% | [9] |
| C000018298 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.30% | [9] |
| C000018298 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | [9] |
| C000018298 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.70% | [9] |
| C000018298 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7% | [9] |
| C000018298 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.30% | [9] |
| C000018298 [Member] | TAIWAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.40% | |
| C000018298 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 11.20% | |
| C000018298 [Member] | GERMANY | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.90% | |
| C000018298 [Member] | JAPAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.60% | |
| C000018298 [Member] | NETHERLANDS | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.80% | |
| C000018298 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.60% | |
| C000018298 [Member] | FRANCE | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10.90% | |
| C000018298 [Member] | UNITED KINGDOM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 13.50% | |
| C000018298 [Member] | SWEDEN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.90% | |
| C000063367 [Member] | Penn Series Quality Bond Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.90% | |
| C000063367 [Member] | Penn Series Index 500 Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 25% | |
| C000063367 [Member] | Penn Series Flexibly Managed Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9% | |
| C000063367 [Member] | Penn Series Mid Core Value Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063367 [Member] | Penn Series Real Estate Securities Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063367 [Member] | Penn Series Emerging Markets Equity Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063367 [Member] | Penn Series Developed International Index Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063367 [Member] | Penn Series International Equity Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.90% | |
| C000063367 [Member] | Penn Series Large Cap Value Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.10% | |
| C000063367 [Member] | Penn Series Large Core Value Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063367 [Member] | Intermediate Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9% | |
| C000063367 [Member] | Large Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 26% | |
| C000063367 [Member] | Short Term Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1% | |
| C000063367 [Member] | International Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14% | |
| C000063367 [Member] | Mid Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8% | |
| C000063367 [Member] | Emerging Markets Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063367 [Member] | Domestic REITs [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063367 [Member] | Mid Cap Growth Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000063367 [Member] | Small Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000063367 [Member] | Small Cap Growth Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063367 [Member] | Large Cap Growth Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 21% | |
| C000018290 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.50% | |
| C000018290 [Member] | Alphabet Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.10% | |
| C000018290 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.30% | |
| C000018290 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.70% | |
| C000018290 [Member] | Visa Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.10% | |
| C000018290 [Member] | Taiwan Semiconductor Manufacturing Co Ltd ADR [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.20% | |
| C000018290 [Member] | Accenture PLC Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.10% | |
| C000018290 [Member] | Church And Dwight Co Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.30% | |
| C000018290 [Member] | Aon PLC Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.10% | |
| C000018290 [Member] | Agilent Technologies Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000018290 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.90% | [10] |
| C000018290 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 40.20% | [10] |
| C000018290 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.10% | [10] |
| C000018290 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.60% | [10] |
| C000018290 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 11.30% | [10] |
| C000018290 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.90% | [10] |
| C000018290 [Member] | Real Estate Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.90% | [10] |
| C000018290 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.40% | [10] |
| C000018290 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 13.60% | [10] |
| C000018290 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.10% | [10] |
| C000018293 [Member] | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 11.30% | |
| C000018293 [Member] | Corporate Bond Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 24.10% | |
| C000018293 [Member] | Money Market Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.50% | |
| C000018293 [Member] | U S Treasury Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.90% | |
| C000018293 [Member] | Residential Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 38.50% | |
| C000018293 [Member] | Municipal Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.70% | |
| C000018293 [Member] | Commercial Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 15% | |
| C000018296 [Member] | Berkshire Hathaway Inc Class B [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.60% | |
| C000018296 [Member] | JPMorgan Chase And Co [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.70% | |
| C000018296 [Member] | Regeneron Pharmaceuticals Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.70% | |
| C000018296 [Member] | Walmart Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.60% | |
| C000018296 [Member] | Wells Fargo And Co [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.50% | |
| C000018296 [Member] | Elevance Health Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.40% | |
| C000018296 [Member] | QUALCOMM Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000018296 [Member] | Philip Morris International Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000018296 [Member] | Cencora Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.90% | |
| C000018296 [Member] | Fiserv Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.70% | |
| C000018296 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 17.90% | [11] |
| C000018296 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.80% | [11] |
| C000018296 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.70% | [11] |
| C000018296 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.90% | [11] |
| C000018296 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 19.10% | [11] |
| C000018296 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.80% | [11] |
| C000018296 [Member] | Real Estate Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1% | [11] |
| C000018296 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.70% | [11] |
| C000018296 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 21.20% | [11] |
| C000018296 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.90% | [11] |
| C000018286 [Member] | NR [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.30% | [12] |
| C000018286 [Member] | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 23.40% | |
| C000018286 [Member] | Corporate Bond Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 38.20% | |
| C000018286 [Member] | Money Market Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.50% | |
| C000018286 [Member] | U S Treasury Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.30% | |
| C000018286 [Member] | Residential Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.90% | |
| C000018286 [Member] | Commercial Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 16.70% | |
| C000018289 [Member] | Caseys General Stores Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.90% | |
| C000018289 [Member] | Entergy Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.50% | |
| C000018289 [Member] | Freeport McMoRan Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.40% | |
| C000018289 [Member] | Alliant Energy Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.40% | |
| C000018289 [Member] | Fidelity National Information Services Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.30% | |
| C000018289 [Member] | Marathon Oil Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.30% | |
| C000018289 [Member] | Chesapeake Energy Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.30% | |
| C000018289 [Member] | Globus Medical Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.20% | |
| C000018289 [Member] | Lamar Advertising Co Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.10% | |
| C000018289 [Member] | The Hartford Financial Services Group Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000018289 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 20.70% | [13] |
| C000018289 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.30% | [13] |
| C000018289 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.70% | [13] |
| C000018289 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.50% | [13] |
| C000018289 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.50% | [13] |
| C000018289 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.40% | [13] |
| C000018289 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | [13] |
| C000018289 [Member] | Real Estate Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.90% | [13] |
| C000018289 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.40% | [13] |
| C000018289 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.90% | [13] |
| C000018289 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.70% | [13] |
| C000018292 [Member] | Welltower Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.70% | |
| C000018292 [Member] | Digital Realty Trust Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.60% | |
| C000018292 [Member] | Prologis Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.10% | |
| C000018292 [Member] | Simon Property Group Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.40% | |
| C000018292 [Member] | American Tower Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.10% | |
| C000018292 [Member] | Invitation Homes Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000018292 [Member] | Crown Castle Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.90% | |
| C000018292 [Member] | Iron Mountain Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.80% | |
| C000018292 [Member] | Equinix Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.10% | |
| C000018292 [Member] | VICI Properties Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.10% | |
| C000018292 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.40% | [14] |
| C000018292 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 12.80% | [14] |
| C000018292 [Member] | Entertainment Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.10% | [14] |
| C000018292 [Member] | Diversified [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 32.40% | [14] |
| C000018292 [Member] | Apartments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 15.10% | [14] |
| C000018292 [Member] | Storage And Warehousing [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.90% | [14] |
| C000018292 [Member] | Regional Malls [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.50% | [14] |
| C000018292 [Member] | Manufactured Homes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.70% | [14] |
| C000018292 [Member] | Single Tenant [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | [14] |
| C000018292 [Member] | Strip Centers [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.30% | [14] |
| C000018292 [Member] | Office Property [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.70% | [14] |
| C000018292 [Member] | Lodging [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.20% | [14] |
| C000018292 [Member] | Hotels And Resorts [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.90% | [14] |
| C000018295 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 13.60% | |
| C000018295 [Member] | Alphabet Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.70% | |
| C000018295 [Member] | Amazon com Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.70% | |
| C000018295 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 12.50% | |
| C000018295 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.50% | |
| C000018295 [Member] | Meta Platforms Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.90% | |
| C000018295 [Member] | Eli Lilly And Co [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.70% | |
| C000018295 [Member] | Visa Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.50% | |
| C000018295 [Member] | Mastercard Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.10% | |
| C000018295 [Member] | Netflix Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.80% | |
| C000018295 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | [15] |
| C000018295 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 51.10% | [15] |
| C000018295 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.50% | [15] |
| C000018295 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 12.80% | [15] |
| C000018295 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10.80% | [15] |
| C000018295 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.70% | [15] |
| C000018295 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.60% | [15] |
| C000018295 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.90% | [15] |
| C000063374 [Member] | SAP S E [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.20% | |
| C000063374 [Member] | Novo Nordisk A S Class B [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.70% | |
| C000063374 [Member] | ASML Holding N V [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.40% | |
| C000063374 [Member] | Nestle S A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.60% | |
| C000063374 [Member] | AstraZeneca PLC [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.40% | |
| C000063374 [Member] | Shell PLC [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.30% | |
| C000063374 [Member] | Toyota Motor Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.30% | |
| C000063374 [Member] | LVMH Moet Hennessy Louis Vuitton S E [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.20% | |
| C000063374 [Member] | Novartis AG [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.20% | |
| C000063374 [Member] | Roche Holding AG [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.10% | |
| C000063374 [Member] | Other [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.20% | |
| C000063374 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 17% | [16] |
| C000063374 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.50% | [16] |
| C000063374 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.80% | [16] |
| C000063374 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 11.40% | [16] |
| C000063374 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 13.40% | [16] |
| C000063374 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.10% | [16] |
| C000063374 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.10% | [16] |
| C000063374 [Member] | Real Estate Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.10% | [16] |
| C000063374 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.50% | [16] |
| C000063374 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 20% | [16] |
| C000063374 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.10% | [16] |
| C000063374 [Member] | AUSTRALIA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | |
| C000063374 [Member] | SWITZERLAND | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10.30% | |
| C000063374 [Member] | GERMANY | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.50% | |
| C000063374 [Member] | DENMARK | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.90% | |
| C000063374 [Member] | JAPAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 22.60% | |
| C000063374 [Member] | NETHERLANDS | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.60% | |
| C000063374 [Member] | FRANCE | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 10.80% | |
| C000063374 [Member] | UNITED KINGDOM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 13.70% | |
| C000063374 [Member] | SWEDEN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.20% | |
| C000018285 [Member] | Federal Home Loan Mortgage Corp 5 256 07 03 24 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.30% | |
| C000018285 [Member] | Federal National Mortgage 5 260 07 10 24 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.30% | |
| C000018285 [Member] | Federal Farm Credit Banks 5 297 07 11 24 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.30% | |
| C000018285 [Member] | Federal Home Loan Mortgage Corp 5 259 07 12 24 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | |
| C000018285 [Member] | Federal Home Loan Banks 5 292 07 18 24 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | |
| C000018285 [Member] | Tennessee Valley Authority 5 272 07 24 24 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | |
| C000018285 [Member] | U S Treasury Bills 5 317 07 30 24 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | |
| C000018285 [Member] | Federal Farm Credit Banks 5 299 07 31 24 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | |
| C000018285 [Member] | U S Treasury Bills 5 267 08 13 24 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | |
| C000018285 [Member] | U S Treasury Bills 5 266 08 20 24 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | |
| C000018288 [Member] | Teradyne Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.40% | |
| C000018288 [Member] | Universal Display Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.30% | |
| C000018288 [Member] | Dexcom Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.20% | |
| C000018288 [Member] | Tyler Technologies Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.20% | |
| C000018288 [Member] | HEICO Corp Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.20% | |
| C000018288 [Member] | Floor And Decor Holdings Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.10% | |
| C000018288 [Member] | CoStar Group Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4% | |
| C000018288 [Member] | Pinterest Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.40% | |
| C000018288 [Member] | Monolithic Power Systems Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000018288 [Member] | The Trade Desk Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.50% | |
| C000018288 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 17.80% | [17] |
| C000018288 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 28% | [17] |
| C000018288 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.60% | [17] |
| C000018288 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 12.20% | [17] |
| C000018288 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 21.20% | [17] |
| C000018288 [Member] | Real Estate Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.10% | [17] |
| C000018288 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.10% | [17] |
| C000018288 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7% | [17] |
| C000018288 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6% | [17] |
| C000018291 [Member] | Zimmer Biomet Holdings Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000018291 [Member] | The Bank of New York Mellon Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.20% | |
| C000018291 [Member] | Conagra Brands Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.10% | |
| C000018291 [Member] | Enterprise Products Partners LP [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000018291 [Member] | Henry Schein Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.90% | |
| C000018291 [Member] | Northern Trust Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.90% | |
| C000018291 [Member] | Koninklijke Ahold Delhaize N V [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.90% | |
| C000018291 [Member] | Willis Towers Watson PLC [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.90% | |
| C000018291 [Member] | Edison International [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.80% | |
| C000018291 [Member] | Quest Diagnostics Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.80% | |
| C000018291 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.40% | [18] |
| C000018291 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.90% | [18] |
| C000018291 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.30% | [18] |
| C000018291 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | [18] |
| C000018291 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 15.10% | [18] |
| C000018291 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.10% | [18] |
| C000018291 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 12.20% | [18] |
| C000018291 [Member] | Real Estate Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7% | [18] |
| C000018291 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 11.50% | [18] |
| C000018291 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 16.80% | [18] |
| C000018291 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.10% | [18] |
| C000063377 [Member] | The Charles Schwab Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.50% | |
| C000063377 [Member] | Chevron Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.20% | |
| C000063377 [Member] | NextEra Energy Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000063377 [Member] | BJs Wholesale Club Holdings Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.40% | |
| C000063377 [Member] | Wells Fargo And Co [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | |
| C000063377 [Member] | Micron Technology Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000063377 [Member] | Thermo Fisher Scientific Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.80% | |
| C000063377 [Member] | Reinsurance Group of America Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.70% | |
| C000063377 [Member] | Hasbro Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | |
| C000063377 [Member] | Mid America Apartment Communities Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.60% | |
| C000063377 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.90% | [19] |
| C000063377 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.30% | [19] |
| C000063377 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.20% | [19] |
| C000063377 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.50% | [19] |
| C000063377 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 16.60% | [19] |
| C000063377 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.10% | [19] |
| C000063377 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7% | [19] |
| C000063377 [Member] | Real Estate Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.40% | [19] |
| C000063377 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.50% | [19] |
| C000063377 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 17.70% | [19] |
| C000063377 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.80% | [19] |
| C000063370 [Member] | BJs Wholesale Club Holdings Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063370 [Member] | Natera Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063370 [Member] | Manhattan Associates Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063370 [Member] | AAON Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063370 [Member] | Texas Roadhouse Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.90% | |
| C000063370 [Member] | Wingstop Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.90% | |
| C000063370 [Member] | MACOM Technology Solutions Holdings Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.90% | |
| C000063370 [Member] | Dominos Pizza Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.80% | |
| C000063370 [Member] | Ashland Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.70% | |
| C000063370 [Member] | Tetra Tech Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.70% | |
| C000063370 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 22.40% | [20] |
| C000063370 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 24.20% | [20] |
| C000063370 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.20% | [20] |
| C000063370 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 14.30% | [20] |
| C000063370 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 19.40% | [20] |
| C000063370 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.90% | [20] |
| C000063370 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.50% | [20] |
| C000063370 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.90% | [20] |
| C000063370 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.20% | [20] |
| C000063373 [Member] | Penn Series Quality Bond Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 41.80% | |
| C000063373 [Member] | Penn Series Index 500 Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7% | |
| C000063373 [Member] | Penn Series Flexibly Managed Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.10% | |
| C000063373 [Member] | Penn Series Limited Maturity Bond Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 30% | |
| C000063373 [Member] | Penn Series Mid Core Value Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063373 [Member] | Penn Series Real Estate Securities Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063373 [Member] | Penn Series Developed International Index Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063373 [Member] | Penn Series High Yield Bond Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063373 [Member] | Penn Series Large Core Value Fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063373 [Member] | Intermediate Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 45% | |
| C000063373 [Member] | Large Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8% | |
| C000063373 [Member] | Short Term Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 30% | |
| C000063373 [Member] | International Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063373 [Member] | Mid Cap Value Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063373 [Member] | High Yield Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5% | |
| C000063373 [Member] | Domestic REITs [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | |
| C000063373 [Member] | Large Cap Growth Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6% | |
| C000018299 [Member] | Meritage Homes Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.50% | |
| C000018299 [Member] | SITE Centers Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.40% | |
| C000018299 [Member] | Gates Industrial Corp PLC [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.30% | |
| C000018299 [Member] | Ameris Bancorp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.30% | |
| C000018299 [Member] | Home BancShares Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.20% | |
| C000018299 [Member] | Acadia Realty Trust [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.20% | |
| C000018299 [Member] | ASGN Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.10% | |
| C000018299 [Member] | Commercial Metals Co [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.10% | |
| C000018299 [Member] | SouthState Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1% | |
| C000018299 [Member] | MGIC Investment Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1% | |
| C000018299 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 13.60% | [21] |
| C000018299 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.60% | [21] |
| C000018299 [Member] | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.90% | [21] |
| C000018299 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 12% | [21] |
| C000018299 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 6.80% | [21] |
| C000018299 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.90% | [21] |
| C000018299 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.40% | [21] |
| C000018299 [Member] | Real Estate Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 8.80% | [21] |
| C000018299 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2.10% | [21] |
| C000018299 [Member] | Financials [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 27% | [21] |
| C000018299 [Member] | Telecommunication Services [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.90% | [21] |
| [1]Sector allocation is presented as a percentage of total investments before short-term investments.[2]Includes non-equity investments.[3]Sector allocation is presented as a percentage of total investments before short-term investments.[4]Sector allocation is presented as a percentage of total investments before short-term investments.[5]Sector allocation is presented as a percentage of total investments before short-term investments.[6]Sector allocation is presented as a percentage of total investments before short-term investments.[7]Sector allocation is presented as a percentage of total investments before short-term investments.[8]Sector allocation is presented as a percentage of total investments before short-term investments.[9]Sector allocation is presented as a percentage of total investments before short-term investments.[10]Sector allocation is presented as a percentage of total investments before short-term investments.[11]Sector allocation is presented as a percentage of total investments before short-term investments.[12]Source: Independent Rating Agencies such as Moody’s, S&P, Fitch, etc.[13]Sector allocation is presented as a percentage of total investments before short-term investments.[14]Sector allocation is presented as a percentage of total investments before short-term investments.[15]Sector allocation is presented as a percentage of total investments before short-term investments.[16]Sector allocation is presented as a percentage of total investments before short-term investments.[17]Sector allocation is presented as a percentage of total investments before short-term investments.[18]Sector allocation is presented as a percentage of total investments before short-term investments.[19]Sector allocation is presented as a percentage of total investments before short-term investments.[20]Sector allocation is presented as a percentage of total investments before short-term investments.[21]Sector allocation is presented as a percentage of total investments before short-term investments. | ||
| Label | Element | Value | |
| C000018293 [Member] | Standard & Poor's, AA Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 45% | [1] |
| C000018293 [Member] | Moody's, Aaa Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 25.10% | [1] |
| C000018293 [Member] | Standard & Poor's, BB Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 0.50% | [1] |
| C000018293 [Member] | Standard & Poor's, A Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 11.60% | [1] |
| C000018293 [Member] | Standard & Poor's, BBB Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 17.80% | [1] |
| C000018294 [Member] | Standard & Poor's, BB Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 47.20% | [2] |
| C000018294 [Member] | Standard & Poor's, CCC Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 6.30% | [2] |
| C000018294 [Member] | Standard & Poor's, A Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 0.50% | [2] |
| C000018294 [Member] | Standard & Poor's, B Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 38.10% | [2] |
| C000018294 [Member] | Standard & Poor's, BBB Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 7.90% | [2] |
| C000018286 [Member] | Standard & Poor's, AA Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 29.40% | [3] |
| C000018286 [Member] | Moody's, Aaa Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 28.10% | [3] |
| C000018286 [Member] | Standard & Poor's, BB Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 6.10% | [3] |
| C000018286 [Member] | Standard & Poor's, A Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 6.30% | [3] |
| C000018286 [Member] | Standard & Poor's, B Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 1.30% | [3] |
| C000018286 [Member] | Standard & Poor's, BBB Rating [Member] | |||
| Percent of Total Investments | oef_PctOfTotalInv | 27.50% | [3] |
| [1]Source: Independent Rating Agencies such as Moody’s, S&P, Fitch, etc.[2]Source: Independent Rating Agencies such as Moody’s, S&P, Fitch, etc.[3]Source: Independent Rating Agencies such as Moody’s, S&P, Fitch, etc. | |||
