Consolidated Statements of Financial Condition Parentheticals - USD ($) $ in Thousands	Dec. 31, 2022	Mar. 31, 2022
Investment securities
Held-to-maturity, Fair Value	$ 2,282	$ 5,276
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)	6,799,410	6,720,618
Common Stock, Shares Outstanding (in shares)	4,295,607	4,216,815
Treasury Stock	2,503,803	2,503,803
Series D Preferred Stock
Convertible Preferred Stock, Liquidation Preference (in dollars per share)	$ 1,000	$ 1,000
Convertible Preferred Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Convertible Preferred Stock, Shares Issued (in shares)	13,201	13,751
Convertible Preferred Stock, Shares Outstanding (in shares)	13,201	13,751
Series E Preferred Stock
Convertible Preferred Stock, Liquidation Preference (in dollars per share)	$ 1,000	$ 1,000
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
Series F Preferred Stock
Convertible Preferred Stock, Liquidation Preference (in dollars per share)	$ 1,000	$ 1,000
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