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Stockholders' Equity Text Tag (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2021 USD ($) $ / shares shares | Mar. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 shares | Jun. 30, 2020 shares | Dec. 31, 1994 USD ($) | Dec. 31, 2011 shares | Mar. 31, 2022 USD ($) $ / shares shares | Mar. 31, 2021 USD ($) $ / shares shares | Feb. 16, 2021 $ / shares | Feb. 01, 2021 $ / shares | Oct. 15, 2020 $ / shares | Oct. 27, 2011 shares | Aug. 06, 2002 shares | Oct. 24, 1994 $ / shares shares
Stockholders' Equity Note [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Shares Issued (in shares) |  | 5,837,071 |  |  |  |  | 6,720,618 | 5,837,071 |  |  |  |  |  | 2,314,375
Common Stock, Par Value (in dollars per share) | $ / shares |  | $ 0.01 |  |  |  |  | $ 0.01 | $ 0.01 |  |  |  |  |  | $ 0.01
Share Price (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 10
Proceeds from Issuance of Common Stock | $ |  |  |  |  | $ 21,500 |  | $ 2,998 | $ 3,197 |  |  |  |  |  |
Stockholders' Equity, Reverse Stock Split |  |  |  |  |  | 1-for-15 |  |  |  |  |  |  |  |
Common Stock, Shares Outstanding (in shares) |  | 3,333,268 |  |  |  |  | 4,216,815 | 3,333,268 |  |  |  | 2,492,415 |  |
Stock Issued During Period, Shares, Reverse Stock Splits (in shares) |  |  |  |  |  | 166,161 |  |  |  |  |  |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 15,442 |
Treasury Stock, Shares, Acquired |  |  |  |  |  |  |  | 2,321,286 |  |  |  |  |  |
Payments for Repurchase of Equity | $ |  |  |  |  |  |  |  | $ 2,500 |  |  |  |  |  |
Proceeds from Other Equity | $ |  |  |  |  |  |  | $ 0 | 2,500 |  |  |  |  |  |
Conversion of Stock, Shares Converted |  | 475 |  | 13,519 |  |  | 3,850 |  |  |  |  |  |  |
Conversion of Stock, Shares Issued |  | 58,093 |  | 1,653,397 |  |  | 470,855 |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  |  |  |  |  | 397,367 |  |  |  |  |  |  |
Proceeds from Issuance of Private Placement | $ | $ 4,000 | $ 4,400 |  |  |  |  |  | $ 6,000 |  |  |  |  |  |
Conversion of Stock, Shares Converted |  | 475 |  | 13,519 |  |  | 3,850 |  |  |  |  |  |  |
Conversion of Stock, Shares Issued |  | 58,093 |  | 1,653,397 |  |  | 470,855 |  |  |  |  |  |  |
Tier One Leverage Capital IMCR to Average Assets |  | 0.0900 |  |  |  |  | 0.0900 | 0.0900 |  |  |  |  |  |
Total Risk Based Capital IMCR to Risk Weighted Assets |  | 0.1200 |  |  |  |  | 0.1200 | 0.1200 |  |  |  |  |  |
Tier One Leverage Capital to Average Assets |  | 0.1001 |  |  |  |  | 0.1045 | 0.1001 |  |  |  |  |  |
Common Equity Tier One Capital to Risk Weighted Assets |  | 14.41% |  |  |  |  | 13.75% | 14.41% |  |  |  |  |  |
Tier One Risk Based Capital to Risk Weighted Assets |  | 0.1441 |  |  |  |  | 0.1375 | 0.1441 |  |  |  |  |  |
Total Risk Based Capital to Risk Weighted Assets |  | 0.1556 |  |  |  |  | 0.1478 | 0.1556 |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchased and Retired During Period, Shares |  |  |  |  |  |  |  | 180,573 |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  | 157,806 | 147,227 |  |  |  |  | 112,612 |  |  |  |  |  |
Sale of Stock, Price Per Share | $ / shares |  |  |  |  |  |  |  |  | $ 8.88 | $ 7.75 | $ 6.62 |  |  |
Series E Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity Note [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Outstanding (in shares) |  | 3,177 |  |  |  |  | 3,177 | 3,177 |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  | 3,177 |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock, Price Per Share | $ / shares |  |  |  |  |  |  |  |  |  | $ 1,000 |  |  |  |
Series F Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity Note [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Outstanding (in shares) |  | 5,000 |  |  |  |  | 9,000 | 5,000 |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | 4,000 | 5,000 |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock, Price Per Share | $ / shares | $ 1,000 |  |  |  |  |  |  |  | $ 1,000 |  |  |  |  |
Series D Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity Note [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Outstanding (in shares) |  | 17,601 |  |  |  |  | 13,751 | 17,601 |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchased and Retired During Period, Shares |  |  |  |  |  |  |  | 13,523 |  |  |  |  |  |

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