Consolidated Statements of Financial Condition Parentheticals - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023
Investment securities
Held-to-maturity, Fair Value	$ 2,107	$ 2,221
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)	7,017,532	6,799,410
Common Stock, Shares Outstanding (in shares)	4,513,729	4,295,607
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)	11,551	13,201
Convertible Preferred Stock, Shares Outstanding (in shares)	11,551	13,201
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