| Marathon Bancorp, Inc. /MD/ |
| Q4-CY2025 | Q3-CY2025 | Q2-CY2025 | Q1-CY2025 | Q4-CY2024 | Q3-CY2024 | Q2-CY2024 | Q1-CY2024 | Q4-CY2023 | Q3-CY2023 | Q2-CY2023 | Q1-CY2023 | Q4-CY2022 | Q3-CY2022 | Q2-CY2022 | Q1-CY2022 | Q4-CY2021 | Q3-CY2021 | Q2-CY2021 | Q1-CY2021 | Q4-CY2020 | Q3-CY2020 | Q2-CY2020 | Q1-CY2020 | Q4-CY2019 | Q3-CY2019 | Q2-CY2019 | Q1-CY2019 | Q4-CY2018 | Q3-CY2018 | Q2-CY2018 | Q1-CY2018 | Q4-CY2017 | Q3-CY2017 | Q2-CY2017 | Q1-CY2017 | Q4-CY2016 | Q3-CY2016 | Q2-CY2016 | Q1-CY2016 | Q4-CY2015 | Q3-CY2015 | Q2-CY2015 | Q1-CY2015 | Q4-CY2014 | Q3-CY2014 | Q2-CY2014 | Q1-CY2014 | Q4-CY2013 |
| Balance Sheet Date | | | 2025-Jun-30 | 2025-Mar-31 | 2024-Dec-31 | 2024-Sep-30 | 2024-Jun-30 | 2024-Mar-31 | 2023-Dec-31 | 2023-Sep-30 | 2023-Jun-30 | 2023-Mar-31 | 2022-Dec-31 | 2022-Sep-30 | 2022-Jun-30 | 2022-Mar-31 | 2021-Dec-31 | 2021-Sep-30 | 2021-Jun-30 | 2021-Mar-31 | 2020-Dec-31 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Fiscal Period | | | Q4-FY2025 | Q3-FY2025 | Q2-FY2025 | Q1-FY2025 | Q4-FY2024 | Q3-FY2024 | Q2-FY2024 | Q1-FY2024 | Q4-FY2023 | Q3-FY2023 | Q2-FY2023 | Q1-FY2023 | Q4-FY2022 | Q3-FY2022 | Q2-FY2022 | Q1-FY2022 | Q4-FY2021 | Q3-FY2021 | Q2-FY2021 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Total Revenue | | | 2,431,058$ | 2,164,078$ | 2,078,954$ | 2,122,948$ | 2,186,012$ | 2,155,755$ | 2,223,684$ | 2,246,512$ | 2,226,636$ | 2,094,888$ | 2,068,195$ | 1,945,695$ | 1,724,121$ | 1,696,670$ | 1,712,684$ | 1,933,803$ | 1,854,907$ | 1,740,332$ | 1,491,621$ | 1,729,517$ | 1,603,447$ | 1,346,959$ | 1,347,494$ | | | | | | | | | | | | | | | | | | | | | | | | |
| Cost Of Revenue | | | 95,000$ | (41,833$) | 8,000$ | (155,000$) | 52,000$ | (244,000$) | (270,000$) | 82,000$ | 0$ | 0$ | 0$ | 0$ | 0$ | 0$ | 0$ | 0$ | 0$ | 0$ | 0$ | 0$ | 0$ | 0$ | 0$ | | | | | | | | | | | | | | | | | | | | | | | | |
| Gross Profit | | | 2,336,058$ | 2,205,911$ | 2,070,954$ | 2,277,948$ | 2,134,012$ | 2,399,755$ | 2,493,684$ | 2,164,512$ | 2,226,636$ | 2,094,888$ | 2,068,195$ | 1,945,695$ | 1,724,121$ | 1,696,670$ | 1,712,684$ | 1,933,803$ | 1,854,907$ | 1,740,332$ | 1,491,621$ | 1,729,517$ | 1,603,447$ | 1,346,959$ | 1,347,494$ | | | | | | | | | | | | | | | | | | | | | | | | |
| Gross Margin | | | 96.09% | 101.93% | 99.62% | 107.30% | 97.62% | 111.32% | 112.14% | 96.35% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | | | | | | | | | | | | | | | | | | | | | | | | |
| Operating Expenses | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Operating Income | | | 2,336,058$ | 2,205,911$ | 2,070,954$ | 2,277,948$ | 2,134,012$ | 2,399,755$ | 2,493,684$ | 2,164,512$ | 2,226,636$ | 2,094,888$ | 2,068,195$ | 1,945,695$ | 1,724,121$ | 1,696,670$ | 1,712,684$ | 1,933,803$ | 1,854,907$ | 1,740,332$ | 1,491,621$ | 1,729,517$ | 1,603,447$ | 1,346,959$ | 1,347,494$ | | | | | | | | | | | | | | | | | | | | | | | | |
| Other Income | | | (2,787,103$) | (2,012,128$) | (2,018,308$) | (2,062,442$) | (2,076,610$) | (2,317,468$) | (1,334,245$) | (1,035,019$) | (782,661$) | (1,034,137$) | (1,119,693$) | (1,003,619$) | (948,326$) | (1,150,762$) | (1,099,468$) | (1,148,810$) | (1,069,683$) | (1,136,328$) | (693,154$) | (975,206$) | (1,160,029$) | (1,001,038$) | (822,882$) | | | | | | | | | | | | | | | | | | | | | | | | |
| Interest Income | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Interest Expenses | | | 0$ | 0$ | 0$ | 0$ | 0$ | 916,370$ | 916,536$ | 841,817$ | 771,813$ | 636,827$ | 555,597$ | 314,262$ | 261,816$ | 222,807$ | 228,741$ | 234,403$ | 255,727$ | 261,904$ | 279,410$ | 294,186$ | 311,915$ | 327,799$ | 345,077$ | | | | | | | | | | | | | | | | | | | | | | | | |
| Income Before Tax | | | (451,045$) | 193,783$ | 52,646$ | 215,506$ | 57,402$ | (834,083$) | 242,903$ | 287,676$ | 672,162$ | 423,924$ | 392,905$ | 627,814$ | 513,979$ | 323,101$ | 384,475$ | 550,590$ | 529,497$ | 342,100$ | 519,057$ | 460,125$ | 131,503$ | 18,122$ | 179,535$ | | | | | | | | | | | | | | | | | | | | | | | | |
| Tax Expenses | | | (119,053$) | 45,380$ | 1,519$ | 40,599$ | (28,434$) | (202,956$) | (29,197$) | 201,479$ | 178,341$ | 58,228$ | 91,505$ | 116,661$ | 129,998$ | 74,275$ | 99,610$ | 133,499$ | 131,630$ | 122,989$ | 128,329$ | 94,772$ | 39,820$ | (10,904$) | 27,388$ | | | | | | | | | | | | | | | | | | | | | | | | |
| Income from Continuing Operations | | | (331,992$) | 148,403$ | 51,127$ | 174,907$ | 85,836$ | (631,127$) | 272,100$ | 86,197$ | 493,821$ | 365,696$ | 301,400$ | 511,153$ | 383,981$ | 248,826$ | 284,865$ | 417,091$ | 397,867$ | 219,111$ | 390,728$ | 365,353$ | 91,683$ | 29,026$ | 152,147$ | | | | | | | | | | | | | | | | | | | | | | | | |
| Income from Discontinued Operations | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Consolidated Income | | | (331,992$) | 148,403$ | 51,127$ | 174,907$ | 85,836$ | (631,127$) | 272,100$ | 86,197$ | 493,821$ | 365,696$ | 301,400$ | 511,153$ | 383,981$ | 248,826$ | 284,865$ | 417,091$ | 397,867$ | 219,111$ | 390,728$ | 365,353$ | 91,683$ | 29,026$ | 152,147$ | | | | | | | | | | | | | | | | | | | | | | | | |
| Net Income | | | (331,992$) | 148,403$ | 51,127$ | 174,907$ | 85,836$ | (631,127$) | 272,100$ | 86,197$ | 493,821$ | 365,696$ | 301,400$ | 511,153$ | 383,981$ | 248,826$ | 284,865$ | 417,091$ | 397,867$ | 219,111$ | 390,728$ | 365,353$ | 91,683$ | 29,026$ | 152,147$ | | | | | | | | | | | | | | | | | | | | | | | | |
| Profit Margin | | | (13.66%) | 6.86% | 2.46% | 8.24% | 3.93% | (29.28%) | 12.24% | 3.84% | 22.18% | 17.46% | 14.57% | 26.27% | 22.27% | 14.67% | 16.63% | 21.57% | 21.45% | 12.59% | 26.20% | 21.13% | 5.72% | 2.16% | 11.29% | | | | | | | | | | | | | | | | | | | | | | | | |
| Earnings to Minority | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Earnings to Common Shareholders | | | (331,992$) | 148,403$ | 51,127$ | 174,907$ | 85,836$ | (631,127$) | 272,100$ | 86,197$ | 493,821$ | 365,696$ | 301,400$ | 511,153$ | 383,981$ | 248,826$ | 284,865$ | 417,091$ | 397,867$ | 219,111$ | 390,728$ | 365,353$ | 91,683$ | 29,026$ | 152,147$ | | | | | | | | | | | | | | | | | | | | | | | | |
| Earnings Per Share, Basic | | | (0.07$) | 0.07$ | 0.03$ | 0.09$ | 0.02$ | (0.31$) | 0.13$ | 0.04$ | 0.24$ | 0.17$ | 0.14$ | 0.24$ | 0.18$ | 0.12$ | 0.13$ | 0.19$ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Earnings Per Share, Diluted | | | (0.07$) | 0.07$ | 0.03$ | 0.09$ | 0.02$ | (0.31$) | 0.13$ | 0.04$ | 0.24$ | 0.17$ | 0.14$ | 0.24$ | 0.18$ | 0.12$ | 0.13$ | 0.19$ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Average Shares, Basic | | | 4,949,915 | 2,036,188 | 2,034,266 | 2,035,131 | 5,082,058 | 2,045,044 | 2,044,170 | 2,043,296 | 2,038,028 | 2,100,058 | 2,148,581 | 2,147,781 | 2,147,148 | 2,144,785 | 2,144,911 | 2,143,536 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Average Shares, Diluted | | | 4,926,795 | 2,058,363 | 2,035,211 | 2,035,131 | 5,079,005 | 2,045,044 | 2,044,170 | 2,046,349 | 2,044,241 | 2,105,104 | 2,152,910 | 2,147,781 | 2,147,148 | 2,144,785 | 2,144,911 | 2,143,536 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| EBIT | | | (451,045$) | 193,783$ | 52,646$ | 215,506$ | 57,402$ | 82,287$ | 1,159,439$ | 1,129,493$ | 1,443,975$ | 1,060,751$ | 948,502$ | 942,076$ | 775,795$ | 545,908$ | 613,216$ | 784,993$ | 785,224$ | 604,004$ | 798,467$ | 754,311$ | 443,418$ | 345,921$ | 524,612$ | | | | | | | | | | | | | | | | | | | | | | | | |
| EBITDA | | | (451,045$) | 193,783$ | 52,646$ | 215,506$ | 57,402$ | 82,287$ | 1,159,439$ | 1,129,493$ | 1,443,975$ | 1,060,751$ | 948,502$ | 942,076$ | 775,795$ | 545,908$ | 613,216$ | 784,993$ | 785,224$ | 604,004$ | 798,467$ | 754,311$ | 443,418$ | 345,921$ | 524,612$ | | | | | | | | | | | | | | | | | | | | | | | | |