| Form N-CSR Cover | 12 Months Ended |
| Jun. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | ASSET MANAGEMENT FUND |
| Entity Central Index Key | 0000705318 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jun. 30, 2024 |
| Shareholder Report | 12 Months Ended |
| Jun. 30, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | ASSET MANAGEMENT FUND |
| Entity Central Index Key | 0000705318 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jun. 30, 2024 |
| AAMA Equity Fund | |
| Shareholder Report [Line Items] | |
| Fund Name | AAMA Equity Fund |
| Class Name | AAMA Equity Fund |
| Trading Symbol | AMFEX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.aamafunds.com/prospectuses-and-reports.html (800) 701-9502 |
| Additional Information Phone Number | (800) 701-9502 |
| Additional Information Website | https://www.aamafunds.com/prospectuses-and-reports.html |
| Expenses [Text Block] | What were the Fund’s costs for the last year? (based on a hypothetical $10,000 investment) Fund Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AAMA Equity Fund $ 124 1.15% |
| Expenses Paid, Amount | $ 124 |
| Expense Ratio, Percent | 1.15% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? The AAMA Equity Fund returned 16.39% for the year ended June 30, 2024. This may be compared to the S&P 500 capitalization weighted index return of 24.56%. Measurements of broader market performance continue to fall behind the headline index with the S&P 500 Equal Weighted Index return of 11.79%, and the S&P Midcap 400 and Smallcap 600 Index returns of 8.66% and 13.57%, respectively. Looking over the last 12 months, stock prices reached a low point in late October and closed at record highs on June 30th. As has been the case over the last several years, large growth companies have led the market and contributed heavily to the performance of capitalization weighted indices. The S&P 500 Index out-paced the equal weight index by 12.77% over the last six months. Stock valuations remain elevated relative to the history of S&P 500 Index prices relative to expected 12 month forward earnings. Operating earnings in the second quarter of 2024 are likely to have recovered to match their prior peak posted in the 4th quarter of 2021. Expectations are for earnings to grow from current levels. The portfolio of the AAMA Equity Fund has included exposure to the Technology sector along with targeted positions in more defensive sectors such as Health Care, Consumer Staples and Utilities. The five year, annualized monthly price volatility of the AAMA Equity Fund is 15.6% versus the 18.0% of the S&P 500 Index. |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years Since Inception 6/30/2017 AAMA Equity Fund 16.39% 10.77% 10.49% S&P 500 ® 24.56% 15.05% 14.28% S&P 500 ® Equal Weight Index 11.79% 10.94% 10.69% |
| Performance Inception Date | Jun. 30, 2017 |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Material Change Date | Jun. 30, 2024 |
| Net Assets | $ 389,227,539 |
| Holdings Count | Holding | 47 |
| Advisory Fees Paid, Amount | $ 4,029,091 |
| Investment Company, Portfolio Turnover | 3% |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $ 389,227,539 Number of Portfolio Holdings 47 Advisory Fee $ 4,029,091 Portfolio Turnover 3% |
| Holdings [Text Block] | |
| Largest Holdings [Text Block] | Top 10 Holdings (% of net assets) Holding Name % of Net Vanguard S&P 500 ETF 11.0% iShares Core S&P 500 ETF 9.7% Microsoft Corporation 3.7% Applied Materials, Inc. 3.4% T-Mobile US, Inc. 3.3% Alphabet, Inc. - Class A 3.2% Freeport-McMoRan, Inc. 3.1% Exxon Mobil Corporation 2.7% Amazon.com, Inc. 2.7% QUALCOMM, Inc. 2.6% |
| Material Fund Change [Text Block] | Material Fund Changes No material changes occurred during the year ended June 30, 2024 |
| AAMA Income Fund | |
| Shareholder Report [Line Items] | |
| Fund Name | AAMA Income Fund |
| Class Name | AAMA Income Fund |
| Trading Symbol | AMFIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.aamafunds.com/prospectuses-and-reports.html (800) 701-9502 |
| Additional Information Phone Number | (800) 701-9502 |
| Additional Information Website | https://www.aamafunds.com/prospectuses-and-reports.html |
| Expenses [Text Block] | What were the Fund’s costs for the last year? (based on a hypothetical $10,000 investment) Fund Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AAMA Income Fund $ 85 0.83% |
| Expenses Paid, Amount | $ 85 |
| Expense Ratio, Percent | 0.83% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? The AAMA Income Fund returned 3.75% for the year ended June 30, 2024. This may be compared to the Bloomberg U.S. Aggregate Bond Index return of 2.63%. Long term maturities fared worse with the Bloomberg U.S. Long Term Treasury Index return of -5.61%. The Federal Reserve has started to hint at the possibility of a lower Federal Funds targeted interest rate in September as recent data has contained evidence of slowing inflation and a less robust labor market. Inflation had cooled in the last six months of 2023 only to rise again early in 2024. The Fed seems to remain patient in order to become convinced that they are not moving too early. Headline inflation measured by the 12 month change in the Consumer Price Index (reported by the Bureau of Labor Statistics) has declined from 8.9% to 2.9% over the last two years. However, the core CPI (less food and energy) was recently reported at 3.12%. The Federal Reserve’s favorite measure using the Personal Consumption Expenditure gauge for services (less housing and energy services) was most recently reported at 3.38%. None of the measures are below the stated 2% target. The AAMA Income Fund continues to be positioned in relatively short-term, high-quality issues which has reduced fund price volatility over the past two years of rising interest rates. Annualized monthly price volatility of the AAMA Income Fund was 2.9% over the last two years compared to the Barclays Aggregate Index volatility of 8.4%. |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years Since Inception 6/30/2017 AAMA Income Fund 3.75% -0.01% 0.37% Bloomberg U.S. Aggregate Bond Index 2.63% -0.23% 0.86% Bloomberg U.S. 1-5 Year Government/Credit Index 4.66% 1.02% 1.45% |
| Performance Inception Date | Jun. 30, 2017 |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Material Change Date | Jun. 30, 2024 |
| Net Assets | $ 145,645,622 |
| Holdings Count | Holding | 16 |
| Advisory Fees Paid, Amount | $ 871,646 |
| Investment Company, Portfolio Turnover | 0% |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $ 145,645,622 Number of Portfolio Holdings 16 Advisory Fee (net of waivers) $ 871,646 Portfolio Turnover 0% |
| Holdings [Text Block] | |
| Largest Holdings [Text Block] | Top 10 Holdings (% of net assets) Holding Name % of Net U.S. Treasury Bills, 5.366%, due 07/23/24 13.7% U.S. Treasury Bills, 5.369%, due 08/22/24 13.6% U.S. Treasury Bills, 5.364%, due 10/22/24 13.5% Federal National Mortgage Association, 2.125%, due 04/24/26 7.5% U.S. Treasury Bills, 5.351%, due 09/24/24 6.8% U.S. Treasury Notes, 0.500%, due 04/30/27 6.1% U.S. Treasury Notes, 1.125%, due 02/29/28 6.1% Federal National Mortgage Association, 0.750%, due 10/8/27 3.6% U.S. Treasury Notes, 1.875%, due 08/31/24 3.4% Federal Home Loan Bank, 2.750%, due 12/13/24 3.4% |
| Material Fund Change [Text Block] | Material Fund Changes No material changes occurred during the year ended June 30, 2024 |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | 60 Months Ended | 84 Months Ended | |||||||
| Jun. 30, 2024 | Jun. 30, 2024 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017 | |
| AAMA Equity Fund | ||||||||||
| Account Value [Line Items] | ||||||||||
| Line Graph and Table Measure Name | AAMA Equity Fund | |||||||||
| Account Value | $ 20,109 | $ 20,109 | $ 20,109 | $ 17,241 | $ 15,121 | $ 16,605 | $ 12,402 | $ 11,943 | $ 11,130 | $ 10,000 |
| Average Annual Return, Percent | 16.39% | 10.77% | 10.49% | |||||||
| AAMA Income Fund | ||||||||||
| Account Value [Line Items] | ||||||||||
| Line Graph and Table Measure Name | AAMA Income Fund | |||||||||
| Account Value | $ 10,258 | $ 10,258 | $ 10,258 | 9,885 | 9,938 | 10,513 | 10,584 | 10,239 | 9,982 | 10,000 |
| Average Annual Return, Percent | 3.75% | (0.01%) | 0.37% | |||||||
| S&P 500® Index | ||||||||||
| Account Value [Line Items] | ||||||||||
| Line Graph and Table Measure Name | S&P 500® Index | |||||||||
| Account Value | $ 20,357 | $ 20,357 | $ 20,357 | 18,336 | 16,004 | 17,629 | 11,589 | 11,943 | 11,201 | 10,000 |
| Average Annual Return, Percent | 24.56% | 15.05% | 14.28% | |||||||
| Bloomberg U.S. Aggregate Bond Index | ||||||||||
| Account Value [Line Items] | ||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Bond Index | |||||||||
| Account Value | $ 10,620 | $ 10,620 | $ 10,620 | 10,363 | 10,434 | 11,699 | 11,699 | 10,690 | 9,982 | 10,000 |
| Average Annual Return, Percent | 2.63% | (0.23%) | 0.86% | |||||||
| S&P 500® Equal Weight Index | ||||||||||
| Account Value [Line Items] | ||||||||||
| Line Graph and Table Measure Name | S&P 500® Equal Weight Index | |||||||||
| Account Value | $ 25,452 | $ 25,452 | $ 25,452 | 20,349 | 17,029 | 19,077 | 13,461 | 12,508 | 11,448 | 10,000 |
| Average Annual Return, Percent | 11.79% | 10.94% | 10.69% | |||||||
| Bloomberg U.S. 15 Year Government Credit Index | ||||||||||
| Account Value [Line Items] | ||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. 1-5 Year Government/Credit Index | |||||||||
| Account Value | $ 11,062 | $ 11,062 | $ 11,062 | $ 10,584 | $ 10,611 | $ 11,142 | $ 11,080 | $ 10,478 | $ 9,982 | $ 10,000 |
| Average Annual Return, Percent | 4.66% | 1.02% | 1.45% |
| Shareholder Report, Holdings (Details) | Jun. 30, 2024 |
| AAMA Equity Fund | Vanguard S&P 500 ETF | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11% |
| AAMA Equity Fund | IShares Core SAndP 500 ETF | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| AAMA Equity Fund | Microsoft Corporation | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| AAMA Equity Fund | Applied Materials, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| AAMA Equity Fund | T-Mobile US, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| AAMA Equity Fund | Alphabet, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| AAMA Equity Fund | Freeport-McMoRan Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| AAMA Equity Fund | Exxon Mobil Corporation | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| AAMA Equity Fund | Amazon.com, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| AAMA Equity Fund | QUALCOMM, Inc. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| AAMA Equity Fund | Tecnology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.50% |
| AAMA Equity Fund | Exchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.70% |
| AAMA Equity Fund | Industrials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| AAMA Equity Fund | Communications | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| AAMA Equity Fund | Consumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| AAMA Equity Fund | Health care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| AAMA Equity Fund | Consumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| AAMA Equity Fund | U.S. Treasury Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| AAMA Equity Fund | Energy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| AAMA Equity Fund | Money Market | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| AAMA Equity Fund | Materials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| AAMA Equity Fund | Utilities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| AAMA Equity Fund | Financials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| AAMA Equity Fund | Liabilities In Excess Of Other Assets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| AAMA Equity Fund | Common Stocks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 70.20% |
| AAMA Equity Fund | Exchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.70% |
| AAMA Equity Fund | Money Market Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| AAMA Equity Fund | U.S. Treasury Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| AAMA Income Fund | U.S. Treasury Bills, 5.366%, due 07/23/24 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.70% |
| AAMA Income Fund | U.S. Treasury Bills, 5.369%, due 08/22/24 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.60% |
| AAMA Income Fund | U.S. Treasury Bills, 5.364%, due 10/22/24 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.50% |
| AAMA Income Fund | Federal National Mortgage Association, 2.125%, due 04/24/26 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.50% |
| AAMA Income Fund | U.S. Treasury Bills, 5.351%, due 09/24/24 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| AAMA Income Fund | U.S. Treasury Notes, 0.500%, due 04/30/27 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| AAMA Income Fund | U.S. Treasury Notes, 1.125%, due 02/29/28 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| AAMA Income Fund | Federal National Mortgage Association, 0.750%, due 10/8/27 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| AAMA Income Fund | U.S. Treasury Notes, 1.875%, due 08/31/24 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| AAMA Income Fund | Federal Home Loan Bank, 2.750%, due 12/13/24 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| AAMA Income Fund | U.S. Treasury Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 63.30% |
| AAMA Income Fund | U.S. Government Agencies | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.50% |
| AAMA Income Fund | Money Market Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| AAMA Income Fund | Municipal Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| AAMA Income Fund | Other Assets In Excess Of Liabilities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | |
| AAMA Income Fund | Money Market Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| AAMA Income Fund | U.S. Treasury Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 63.20% |
| AAMA Income Fund | Municipal Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| AAMA Income Fund | U.S. Government Agencies | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.50% |
