Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Assets [Abstract]
Amortized cost	$ 199,318	$ 219,658
Allowance for loan losses	$ 10,260	$ 8,364
Equity:
Treasury stock, shares (in shares)	327,228	327,228
Non-Cumulative Redeemable Perpetual Preferred Stock, Series C [Member]
Equity:
Preferred stock, shares authorized (in shares)	150,000	150,000
Preferred stock, shares issued (in shares)	150,000	150,000
Preferred stock, shares outstanding (in shares)	150,000	150,000
Preferred stock, liquidation value (in dollars per share)	$ 1,000	$ 1,000
Class A Voting Common Stock [Member]
Equity:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	6,460,272	6,349,455
Common stock, shares outstanding (in shares)	6,133,044	6,022,227
Class B Non-Voting Common Stock [Member]
Equity:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	15,000,000	15,000,000
Common stock, shares issued (in shares)	1,425,574	1,425,574
Common stock, shares outstanding (in shares)	1,425,574	1,425,574
Class C Non-Voting Common Stock [Member]
Equity:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	25,000,000	25,000,000
Common stock, shares issued (in shares)	1,672,562	1,672,562
Common stock, shares outstanding (in shares)	1,672,562	1,672,562