Consolidated Statements of Financial Condition Parentheticals - USD ($) $ in Thousands	Sep. 30, 2024	Mar. 31, 2024
Investment securities
Debt Securities, Available-for-sale, Amortized Cost	$ 58,957	$ 60,735
Held-to-maturity, Fair Value	$ 1,816	$ 1,905
Common Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized (in shares)	10,000,000	10,000,000
Common Stock, Shares Issued (in shares)	7,644,675	7,644,675
Common Stock, Shares Outstanding (in shares)	5,140,872	5,140,872
Treasury Stock, Common, Shares	2,503,803	2,503,803
Series D Preferred Stock
Convertible Preferred Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Convertible Preferred Stock, Shares Issued (in shares)	9,557	9,557
Convertible Preferred Stock, Shares Outstanding (in shares)	9,557	9,557
Convertible Preferred Stock, Liquidation Preference (in dollars per share)	$ 1,000	$ 1,000
Series E Preferred Stock
Convertible Preferred Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Convertible Preferred Stock, Shares Issued (in shares)	3,177	3,177
Convertible Preferred Stock, Shares Outstanding (in shares)	3,177	3,177
Convertible Preferred Stock, Liquidation Preference (in dollars per share)	$ 1,000	$ 1,000
Series F Preferred Stock
Convertible Preferred Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Convertible Preferred Stock, Shares Issued (in shares)	9,000	9,000
Convertible Preferred Stock, Shares Outstanding (in shares)	9,000	9,000
Convertible Preferred Stock, Liquidation Preference (in dollars per share)	$ 1,000	$ 1,000