| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Dec 31, 2023 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 | Dec 31, 2022 | Sep 30, 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Interest income: | ||||||||||||||||
| Interest and fees on loans receivable | ||||||||||||||||
| Interest on available-for-sale securities | ||||||||||||||||
| Other interest income | ||||||||||||||||
| Total interest income | ||||||||||||||||
| Interest expense: | ||||||||||||||||
| Interest on deposits | ||||||||||||||||
| Interest on borrowings | ||||||||||||||||
| Total interest expense | ||||||||||||||||
| Net interest income | ||||||||||||||||
| Provision for (recapture of) credit losses | ||||||||||||||||
| Net interest income after provision for (recapture of) credit losses | ||||||||||||||||
| Non-interest income: | ||||||||||||||||
| Service charges | ||||||||||||||||
| YoY growth | +7.3% | +2.3% | +29.3% | +30.6% | ||||||||||||
| Grants | ||||||||||||||||
| Earnings on bank owned life insurance | — | — | ||||||||||||||
| Management fees | — | — | — | |||||||||||||
| Other | ||||||||||||||||
| Total non-interest income | ||||||||||||||||
| Non-interest expense: | ||||||||||||||||
| Compensation and benefits | ||||||||||||||||
| Occupancy expense | ||||||||||||||||
| Information services | ||||||||||||||||
| Professional services | ||||||||||||||||
| Advertising and promotional expense | — | |||||||||||||||
| Supervisory costs | ||||||||||||||||
| Corporate insurance | ||||||||||||||||
| Amortization of core deposit intangible | ||||||||||||||||
| Operational loss | ||||||||||||||||
| Other | ||||||||||||||||
| Total non-interest expense | ||||||||||||||||
| Income (loss) before income taxes | ||||||||||||||||
| Income tax expense (benefit) | ||||||||||||||||
| Net income (loss) | ||||||||||||||||
| % of revenue | 2620.5% | 2602.3% | 1947.2% | -50838.3% | ||||||||||||
| Less: Net income (loss) attributable to non-controlling interest | ||||||||||||||||
| Net income (loss) attributable to Broadway Financial Corporation | ||||||||||||||||
| % of revenue | 2200.0% | 2634.1% | 1934.0% | -50814.9% | ||||||||||||
| Less: Preferred stock dividends | ||||||||||||||||
| Net income (loss) attributable to common stockholders | ||||||||||||||||
| Net income (loss) | — | — | — | |||||||||||||
| % of revenue | 2620.5% | — | — | — | ||||||||||||
| Less: Net income (loss) attributable to non-controlling interest | — | — | — | |||||||||||||
| Comprehensive income attributable to Broadway Financial Corporation | ||||||||||||||||
| Earnings (loss) per common share-basic (in Dollars per share) | — | |||||||||||||||
| Earnings (loss) per common share-diluted (in Dollars per share) | — |