Consolidated Statements of Financial Condition (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Securities held-to-maturity, allowance for credit losses	$ 1,082	$ 1,100
Securities held-to-maturity, assets pledged	4,319	4,550
Securities held-to-maturity, fair value	57,665	62,550
Securities available for sale, pledged as collateral	141,852	172,235
Securities available for sale, fair value option	$ 12,782	$ 13,023
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	34,087,623	34,087,623
Common stock, shares outstanding (in shares)	28,904,625	29,476,391
Treasury stock, at average cost (in shares)	5,182,998	4,611,232