| Shareholder Report | 6 Months Ended | 120 Months Ended |
| Jun. 30, 2024 USD ($) Holding | Jun. 30, 2024 USD ($) Holding |
| Shareholder Report [Line Items] | | |
| Document Type | N-CSRS | |
| Amendment Flag | false | |
| Registrant Name | SPIRIT OF AMERICA INVESTMENT FUND INC | |
| Entity Central Index Key | 0001039667 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | Jun. 30, 2024 | |
| C000073513 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Income Fund | |
| Class Name | Class A Shares | |
| Trading Symbol | SOAIX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Spirit of America Income Fund for the period of January 1, 2024 to June 30, 2024. | |
| Additional Information [Text Block] | You can find additional information about the Fund at www.funddocs.filepoint.com/soa | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa</span>/" id="sjs-B18"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.funddocs.filepoint.com/soa</span>/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A Shares $57 1.15% | |
| Expenses Paid, Amount | $ 57 | |
| Expense Ratio, Percent | 1.15% | |
| 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] | Spirit of America Income Fund - Class A Shares Bloomberg U.S. Aggregate Bond Index 12/31/08 $9,524 $10,000 06/30/09 $10,188 $10,190 06/30/10 $12,011 $11,158 06/30/11 $12,910 $11,593 06/30/12 $14,841 $12,460 06/30/13 $15,242 $12,374 06/30/14 $16,340 $12,915 06/30/15 $16,934 $13,155 06/30/16 $18,407 $13,945 06/30/17 $18,622 $13,901 06/30/18 $19,186 $13,846 06/30/19 $20,636 $14,935 06/30/20 $21,123 $16,240 06/30/21 $23,280 $16,186 06/30/22 $21,254 $14,520 06/30/23 $21,316 $14,384 06/30/24 $22,517 $14,763 | |
| Average Annual Return [Table Text Block] | 1 Year 5 Years 10 Years Spirit of America Income Fund - Class A Shares Without Load 5.64% 1.76% 3.26% With Load 0.58% 0.78% 2.76% Bloomberg U.S. Aggregate Bond Index 2.63% - 1.35% | |
| 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 | |
| AssetsNet | $ 66,008,372 | $ 66,008,372 |
| Holdings Count | Holding | 157 | 157 |
| Advisory Fees Paid, Amount | $ 168,208 | |
| InvestmentCompanyPortfolioTurnover | 0% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $66,008,372 Number of Portfolio Holdings 157 Advisory Fee (net of waivers) $168,208 Portfolio Turnover 0% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Econ & Indust Development 2.4% City 3.0% Integrated Electric Utilities 3.3% Banks 3.5% Higher Education 3.6% Other 4.0% Midstream - Oil & Gas 4.3% Hospitals 4.6% School District 4.7% Electricity And Public Power 5.8% Miscellaneous Tax 6.3% Local Authority 6.5% Life Insurance 7.5% Tobacco 7.9% Other Sectors 32.6% | |
| Material Fund Change [Text Block] | Material Fund Changes No material changes occurred during the period ended June 30, 2024. | |
| C000167229 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Income Fund | |
| Class Name | Class C Shares | |
| Trading Symbol | SACTX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Spirit of America Income Fund for the period of January 1, 2024 to June 30, 2024. | |
| Additional Information [Text Block] | You can find additional information about the Fund at www.funddocs.filepoint.com/soa | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa</span>/" id="sjs-B42"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.funddocs.filepoint.com/soa</span>/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C Shares $94 1.90% | |
| Expenses Paid, Amount | $ 94 | |
| Expense Ratio, Percent | 1.90% | |
| 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] | Spirit of America Income Fund - Class C Shares Bloomberg U.S. Aggregate Bond Index 03/15/16 $10,000 $10,000 06/30/16 $10,584 $10,343 06/30/17 $10,625 $10,310 06/30/18 $10,867 $10,269 06/30/19 $11,600 $11,077 06/30/20 $11,776 $12,045 06/30/21 $12,883 $12,005 06/30/22 $11,675 $10,770 06/30/23 $11,621 $10,669 06/30/24 $12,186 $10,949 | |
| Average Annual Return [Table Text Block] | 1 Year 5 Years Since Inception (March 15, 2016) Spirit of America Income Fund - Class C Shares Without Load 4.86% 0.99% 2.41% With Load 3.87% 0.99% 2.41% Bloomberg U.S. Aggregate Bond Index 2.63% - 1.10% | |
| Performance Inception Date | | Mar. 15, 2016 |
| 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 | |
| AssetsNet | $ 66,008,372 | $ 66,008,372 |
| Holdings Count | Holding | 157 | 157 |
| Advisory Fees Paid, Amount | $ 168,208 | |
| InvestmentCompanyPortfolioTurnover | 0% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $66,008,372 Number of Portfolio Holdings 157 Advisory Fee (net of waivers) $168,208 Portfolio Turnover 0% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Econ & Indust Development 2.4% City 3.0% Integrated Electric Utilities 3.3% Banks 3.5% Higher Education 3.6% Other 4.0% Midstream - Oil & Gas 4.3% Hospitals 4.6% School District 4.7% Electricity And Public Power 5.8% Miscellaneous Tax 6.3% Local Authority 6.5% Life Insurance 7.5% Tobacco 7.9% Other Sectors 32.6% | |
| Material Fund Change [Text Block] | Material Fund Changes No material changes occurred during the period ended June 30, 2024. | |
| C000219380 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Income Fund | |
| Class Name | Institutional Shares | |
| Trading Symbol | SOITX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Spirit of America Income Fund for the period of January 1, 2024 to June 30, 2024. | |
| Additional Information [Text Block] | You can find additional information about the Fund at www.funddocs.filepoint.com/soa | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa</span>/" id="sjs-B67"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.funddocs.filepoint.com/soa</span>/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000
investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Institutional Shares $45 0.91% | |
| Expenses Paid, Amount | $ 45 | |
| Expense Ratio, Percent | 0.91% | |
| 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] | Spirit of America Income Fund - Institutional Shares Bloomberg U.S. Aggregate Bond Index 05/01/20 $10,000 $10,000 06/30/20 $10,289 $10,122 06/30/21 $11,364 $10,088 06/30/22 $10,405 $9,050 06/30/23 $10,452 $8,965 06/30/24 $11,067 $9,201 | |
| Average Annual Return [Table Text Block] | 1 Year Since Inception (May 1, 2020) Spirit of America Income Fund - Institutional Shares Without Load 5.88% 2.46% With Load 5.88% 2.46% Bloomberg U.S. Aggregate Bond Index 2.63% - | |
| Performance Inception Date | | May 01, 2020 |
| 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 | |
| AssetsNet | $ 66,008,372 | $ 66,008,372 |
| Holdings Count | Holding | 157 | 157 |
| Advisory Fees Paid, Amount | $ 168,208 | |
| InvestmentCompanyPortfolioTurnover | 0% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $66,008,372 Number of Portfolio Holdings 157 Advisory Fee (net of waivers) $168,208 Portfolio Turnover 0% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Econ & Indust Development 2.4% City 3.0% Integrated Electric Utilities 3.3% Banks 3.5% Higher Education 3.6% Other 4.0% Midstream - Oil & Gas 4.3% Hospitals 4.6% School District 4.7% Electricity And Public Power 5.8% Miscellaneous Tax 6.3% Local Authority 6.5% Life Insurance 7.5% Tobacco 7.9% Other Sectors 32.6% | |
| Material Fund Change [Text Block] | Material Fund Changes No material changes occurred during the period ended June 30, 2024. | |
| C000003857 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Large Cap Value Fund | |
| Class Name | Class A Shares | |
| Trading Symbol | SOAVX | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A Shares $75 1.51% | |
| Expenses Paid, Amount | $ 75 | |
| Expense Ratio, Percent | 1.51% | |
| 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. | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Spirit of America Large Cap Value Fund - Class A Shares Without Load 34.94% 16.30% 11.79% With Load 27.86% 15.05% 11.18% S&P 500 ® 24.56% 15.05% 12.86% The Fund's past performance is not a good predictor of how the Fund will perform in the future. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | |
| 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 | |
| AssetsNet | $ 187,488,991 | $ 187,488,991 |
| Holdings Count | Holding | 167 | 167 |
| Advisory Fees Paid, Amount | $ 822,948 | |
| InvestmentCompanyPortfolioTurnover | 5% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $187,488,991 Number of Portfolio Holdings 167 Advisory Fee $822,948 Portfolio Turnover 5% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Liabilities in Excess of Other Assets -0.8% Money Market Funds 0.2% Materials 1.3% Real Estate Investment Trusts (REITs) 1.4% Utilities 2.2% Communications 7.0% Consumer Discretionary 7.0% Financials 7.4% Consumer Staples 7.9% Industrials 8.2% Energy 8.8% Health Care 9.5% Technology 39.9% | |
| C000167227 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Large Cap Value Fund | |
| Class Name | Class C Shares | |
| Trading Symbol | SACVX | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C Shares $110 2.21% | |
| Expenses Paid, Amount | $ 110 | |
| Expense Ratio, Percent | 2.21% | |
| 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. | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years Since Inception (March 15, 2016) Spirit of America Large Cap Value Fund - Class C Shares Without Load 33.96% 15.49% 13.61% With Load 32.96% 15.49% 13.61% S&P 500 ® 24.56% 15.05% 14.81% The Fund's past performance is not a good predictor of how the Fund will perform in the future. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | |
| Performance Inception Date | | Mar. 15, 2016 |
| 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 | |
| AssetsNet | $ 187,488,991 | $ 187,488,991 |
| Holdings Count | Holding | 167 | 167 |
| Advisory Fees Paid, Amount | $ 822,948 | |
| InvestmentCompanyPortfolioTurnover | 5% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $187,488,991 Number of Portfolio Holdings 167 Advisory Fee $822,948 Portfolio Turnover 5% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Liabilities in Excess of Other Assets -0.8% Money Market Funds 0.2% Materials 1.3% Real Estate Investment Trusts (REITs) 1.4% Utilities 2.2% Communications 7.0% Consumer Discretionary 7.0% Financials 7.4% Consumer Staples 7.9% Industrials 8.2% Energy 8.8% Health Care 9.5% Technology 39.9% | |
| C000219378 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Large Cap Value Fund | |
| Class Name | Institutional Shares | |
| Trading Symbol | SOIVX | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Institutional Shares $60 1.21% | |
| Expenses Paid, Amount | $ 60 | |
| Expense Ratio, Percent | 1.21% | |
| 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. | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year Since Inception (5/1/2020) Spirit of America Large Cap Value Fund - Institutional Shares 35.29% 21.50% S&P 500 ® 24.56% 18.96% The Fund's past performance is not a good predictor of how the Fund will perform in the future. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | |
| 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 | |
| AssetsNet | $ 187,488,991 | $ 187,488,991 |
| Holdings Count | Holding | 167 | 167 |
| Advisory Fees Paid, Amount | $ 822,948 | |
| InvestmentCompanyPortfolioTurnover | 5% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $187,488,991 Number of Portfolio Holdings 167 Advisory Fee $822,948 Portfolio Turnover 5% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Liabilities in Excess of Other Assets -0.8% Money Market Funds 0.2% Materials 1.3% Real Estate Investment Trusts (REITs) 1.4% Utilities 2.2% Communications 7.0% Consumer Discretionary 7.0% Financials 7.4% Consumer Staples 7.9% Industrials 8.2% Energy 8.8% Health Care 9.5% Technology 39.9% | |
| C000059931 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Municipal Tax Free Bond Fund | |
| Class Name | Class A Shares | |
| Trading Symbol | SOAMX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Spirit of America Municipal Tax Free Bond Fund for the period of January 1, 2024 to June 30, 2024. | |
| Additional Information [Text Block] | You can find additional information about the Fund at www.funddocs.filepoint.com/soa | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa</span>/" id="sjs-B156"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.funddocs.filepoint.com/soa</span>/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A Shares $46 0.92% | |
| Expenses Paid, Amount | $ 46 | |
| Expense Ratio, Percent | 0.92% | |
| 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. | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Spirit of America Municipal Tax Free Bond Fund - Class A Shares Without Load 2.11% 0.24% 1.76% With Load - - 1.26% Bloomberg Municipal Bond Index 3.21% 1.16% 2.39% The Fund's past performance is not a good predictor of how the Fund will perform in the future. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | |
| 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 | |
| AssetsNet | $ 33,025,896 | $ 33,025,896 |
| Holdings Count | Holding | 146 | 146 |
| Advisory Fees Paid, Amount | $ 35,886 | |
| InvestmentCompanyPortfolioTurnover | 4% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $33,025,896 Number of Portfolio Holdings 146 Advisory Fee (net of waivers) $35,886 Portfolio Turnover 4% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Other Assets in Excess of Liabilities 0.9% Idr & Pcr 0.8% Money Market Funds 1.7% State 4.5% Health Care 5.5% Local 5.9% Special Tax 7.1% Education 12.8% Housing 13.7% Transportation 14.8% Lease 15.9% Utilities 16.4% | |
| C000167228 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Municipal Tax Free Bond Fund | |
| Class Name | Class C Shares | |
| Trading Symbol | SACFX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Spirit of America Municipal Tax Free Bond Fund for the period of January 1, 2024 to June 30, 2024. | |
| Additional Information [Text Block] | You can find additional information about the Fund at www.funddocs.filepoint.com/soa | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa</span>/" id="sjs-B178"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.funddocs.filepoint.com/soa</span>/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C Shares $88 1.77% | |
| Expenses Paid, Amount | $ 88 | |
| Expense Ratio, Percent | 1.77% | |
| 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. | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years Since Inception (March 15, 2016) Spirit of America Municipal Tax Free Bond Fund - Class C Shares Without Load 1.13% - 0.31% With Load 0.14% - 0.31% Bloomberg Municipal Bond Index 3.21% 1.16% 2.02% The Fund's past performance is not a good predictor of how the Fund will perform in the future. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | |
| Performance Inception Date | | Mar. 15, 2016 |
| 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 | |
| AssetsNet | $ 33,025,896 | $ 33,025,896 |
| Holdings Count | Holding | 146 | 146 |
| Advisory Fees Paid, Amount | $ 35,886 | |
| InvestmentCompanyPortfolioTurnover | 4% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $33,025,896 Number of Portfolio Holdings 146 Advisory Fee (net of waivers) $35,886 Portfolio Turnover 4% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Other Assets in Excess of Liabilities 0.9% Idr & Pcr 0.8% Money Market Funds 1.7% State 4.5% Health Care 5.5% Local 5.9% Special Tax 7.1% Education 12.8% Housing 13.7% Transportation 14.8% Lease 15.9% Utilities 16.4% | |
| C000219379 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Municipal Tax Free Bond Fund | |
| Class Name | Institutional Shares | |
| Trading Symbol | SOIMX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Spirit of America Municipal Tax Free Bond Fund for the period of January 1, 2024 to June 30, 2024. | |
| Additional Information [Text Block] | You can find additional information about the Fund at www.funddocs.filepoint.com/soa | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa</span>/" id="sjs-B201"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.funddocs.filepoint.com/soa</span>/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Institutional Shares $38 0.77% | |
| Expenses Paid, Amount | $ 38 | |
| Expense Ratio, Percent | 0.77% | |
| 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. | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year Since Inception (5/1/2020) Spirit of America Municipal Tax Free Bond Fund - Institutional Shares 2.15% 0.23% Bloomberg Municipal Bond Index 3.21% 1.22% The Fund's past performance is not a good predictor of how the Fund will perform in the future. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | |
| 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 | |
| AssetsNet | $ 33,025,896 | $ 33,025,896 |
| Holdings Count | Holding | 146 | 146 |
| Advisory Fees Paid, Amount | $ 35,886 | |
| InvestmentCompanyPortfolioTurnover | 4% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $33,025,896 Number of Portfolio Holdings 146 Advisory Fee (net of waivers) $35,886 Portfolio Turnover 4% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Other Assets in Excess of Liabilities 0.9% Idr & Pcr 0.8% Money Market Funds 1.7% State 4.5% Health Care 5.5% Local 5.9% Special Tax 7.1% Education 12.8% Housing 13.7% Transportation 14.8% Lease 15.9% Utilities 16.4% | |
| C000003855 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Real Estate Income and Growth Fund | |
| Class Name | Class A Shares | |
| Trading Symbol | SOAAX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Spirit of America Real Estate Income and Growth Fund for the period of January 1, 2024 to June 30, 2024. | |
| Additional Information [Text Block] | You can find additional information about the Fund at www.funddocs.filepoint.com/soa | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa</span>/" id="sjs-B223"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.funddocs.filepoint.com/soa</span>/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A Shares $80 1.61% | |
| Expenses Paid, Amount | $ 80 | |
| Expense Ratio, Percent | 1.61% | |
| 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. | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Spirit of America Real Estate Income and Growth Fund - Class A Shares Without Load 5.02% 2.41% 4.28% With Load - 1.31% 3.71% S&P 500 ® 24.56% 15.05% 12.86% MSCI US REIT Index 7.59% 3.89% 5.83% The Fund's past performance is not a good predictor of how the Fund will perform in the future. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | |
| 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 | |
| AssetsNet | $ 69,092,094 | $ 69,092,094 |
| Holdings Count | Holding | 104 | 104 |
| Advisory Fees Paid, Amount | $ 343,626 | |
| InvestmentCompanyPortfolioTurnover | 5% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $69,092,094 Number of Portfolio Holdings 104 Advisory Fee $343,626 Portfolio Turnover 5% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Other Assets in Excess of Liabilities 0.5% Industrials 0.2% Communications 0.5% Money Market Funds 0.7% Consumer Discretionary 1.1% Energy 1.3% Real Estate 95.7% | |
| C000167226 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Real Estate Income and Growth Fund | |
| Class Name | Class C Shares | |
| Trading Symbol | SACRX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Spirit of America Real Estate Income and Growth Fund for the period of January 1, 2024 to June 30, 2024. | |
| Additional Information [Text Block] | You can find additional information about the Fund at www.funddocs.filepoint.com/soa | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa</span>/" id="sjs-B245"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.funddocs.filepoint.com/soa</span>/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C Shares $115 2.32% | |
| Expenses Paid, Amount | $ 115 | |
| Expense Ratio, Percent | 2.32% | |
| 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. | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years Since Inception (March 15, 2016) Spirit of America Real Estate Income and Growth Fund - Class C Shares Without Load 4.31% 1.72% 3.61% With Load 3.36% 1.72% 3.61% S&P 500 ® 24.56% 15.05% 14.81% MSCI US REIT Index 7.59% 3.89% 5.20% The Fund's past performance is not a good predictor of how the Fund will perform in the future. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | |
| Performance Inception Date | | Mar. 15, 2016 |
| 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 | |
| AssetsNet | $ 69,092,094 | $ 69,092,094 |
| Holdings Count | Holding | 104 | 104 |
| Advisory Fees Paid, Amount | $ 343,626 | |
| InvestmentCompanyPortfolioTurnover | 5% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $69,092,094 Number of Portfolio Holdings 104 Advisory Fee $343,626 Portfolio Turnover 5% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Other Assets in Excess of Liabilities 0.5% Industrials 0.2% Communications 0.5% Money Market Funds 0.7% Consumer Discretionary 1.1% Energy 1.3% Real Estate 95.7% | |
| C000219377 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Real Estate Income and Growth Fund | |
| Class Name | Institutional Shares | |
| Trading Symbol | SOIAX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Spirit of America Real Estate Income and Growth Fund for the period of January 1, 2024 to June 30, 2024. | |
| Additional Information [Text Block] | You can find additional information about the Fund at www.funddocs.filepoint.com/soa | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa</span>/" id="sjs-B268"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.funddocs.filepoint.com/soa</span>/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Institutional Shares $65 1.31% | |
| Expenses Paid, Amount | $ 65 | |
| Expense Ratio, Percent | 1.31% | |
| 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. | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year Since Inception (5/1/2020) Spirit of America Real Estate Income and Growth Fund - Institutional Shares 5.35% 6.32% S&P 500 ® 24.56% 18.96% MSCI US REIT Index 7.59% 9.98% The Fund's past performance is not a good predictor of how the Fund will perform in the future. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | |
| 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 | |
| AssetsNet | $ 69,092,094 | $ 69,092,094 |
| Holdings Count | Holding | 104 | 104 |
| Advisory Fees Paid, Amount | $ 343,626 | |
| InvestmentCompanyPortfolioTurnover | 5% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $69,092,094 Number of Portfolio Holdings 104 Advisory Fee $343,626 Portfolio Turnover 5% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Other Assets in Excess of Liabilities 0.5% Industrials 0.2% Communications 0.5% Money Market Funds 0.7% Consumer Discretionary 1.1% Energy 1.3% Real Estate 95.7% | |
| C000240591 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Utilities Fund | |
| Class Name | Class A Shares | |
| Trading Symbol | SOAUX | |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa/ | |
| Expenses Paid, Amount | $ 77 | |
| Expense Ratio, Percent | 1.54% | |
| Material Change Date | Jun. 30, 2024 | |
| AssetsNet | $ 16,907,249 | $ 16,907,249 |
| Holdings Count | Holding | 44 | 44 |
| Advisory Fees Paid, Amount | $ 32,900 | |
| InvestmentCompanyPortfolioTurnover | 0% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $16,907,249 Number of Portfolio Holdings 44 Advisory Fee (net of waivers) $32,900 Portfolio Turnover 0% | |
| Holdings [Text Block] | What did the Fund invest in? Sector Weighting (% of net assets) Value Value Liabilities in Excess of Other Assets -1.3% Industrials 0.6% Energy 0.6% Money Market Funds 3.2% Utilities 96.9% | |
| Updated Prospectus Web Address | www.funddocs.filepoint.com/soa/ | |
| C000240590 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Utilities Fund | |
| Class Name | Class C Shares | |
| Trading Symbol | SOCUX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Spirit of America Utilities Fund for the period of January 1, 2024 to June 30, 2024. | |
| Additional Information [Text Block] | You can find additional information about the Fund at www.funddocs.filepoint.com/soa | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa</span>/" id="sjs-B308"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.funddocs.filepoint.com/soa</span>/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C Shares $114 2.29% | |
| Expenses Paid, Amount | $ 114 | |
| Expense Ratio, Percent | 2.29% | |
| 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. | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year Since Inception (January 31, 2023) Spirit of America Utilities Fund - Class C Shares Without Load 6.16% 1.92% With Load 5.18% 1.92% S&P 500 ® 24.56% 24.99% S&P 500 Utilities Sector Index 7.82% 2.65% The Fund's past performance is not a good predictor of how the Fund will perform in the future. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | |
| Performance Inception Date | | Jan. 31, 2023 |
| 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 | |
| AssetsNet | $ 16,907,249 | $ 16,907,249 |
| Holdings Count | Holding | 44 | 44 |
| Advisory Fees Paid, Amount | $ 32,900 | |
| InvestmentCompanyPortfolioTurnover | 0% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $16,907,249 Number of Portfolio Holdings 44 Advisory Fee (net of waivers) $32,900 Portfolio Turnover 0% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Liabilities in Excess of Other Assets -1.3% Industrials 0.6% Energy 0.6% Money Market Funds 3.2% Utilities 96.9% | |
| C000240589 | | |
| Shareholder Report [Line Items] | | |
| Fund Name | Spirit of America Utilities Fund | |
| Class Name | Institutional Shares | |
| Trading Symbol | SOIUX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Spirit of America Utilities Fund for the period of January 1, 2024 to June 30, 2024. | |
| Additional Information [Text Block] | You can find additional information about the Fund at www.funddocs.filepoint.com/soa | |
| Additional Information Phone Number | (516) 390-5565 | |
| Additional Information Website | www.funddocs.filepoint.com/soa</span>/" id="sjs-B331"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">www.funddocs.filepoint.com/soa</span>/ | |
| Expenses [Text Block] | What were the Fund’s costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Institutional Shares $64 1.28% | |
| Expenses Paid, Amount | $ 64 | |
| Expense Ratio, Percent | 1.28% | |
| 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. | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year Since Inception (1/31/2023) Spirit of America Utilities Fund - Institutional Shares 7.24% 2.95% S&P 500 ® 24.56% 24.99% S&P 500 Utilities Sector Index 7.82% 2.65% The Fund's past performance is not a good predictor of how the Fund will perform in the future. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | |
| 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 | |
| AssetsNet | $ 16,907,249 | $ 16,907,249 |
| Holdings Count | Holding | 44 | 44 |
| Advisory Fees Paid, Amount | $ 32,900 | |
| InvestmentCompanyPortfolioTurnover | 0% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Net Assets $16,907,249 Number of Portfolio Holdings 44 Advisory Fee (net of waivers) $32,900 Portfolio Turnover 0% | |
| Holdings [Text Block] | Sector Weighting (% of net assets) Value Value Liabilities in Excess of Other Assets -1.3% Industrials 0.6% Energy 0.6% Money Market Funds 3.2% Utilities 96.9% | |
