Securities, Unrealized Loss Position (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 20,892	$ 235,668
More than 12 months, fair value	294,176	87,969
Total, fair value	315,068	323,637
Less than 12 months, unrealized losses	(542)	(11,785)
More than 12 months, unrealized losses	(26,645)	(12,832)
Total, unrealized losses	(27,187)	(24,617)
Debt Securities Available-for-Sale [Abstract]
Securities in nonaccrual status	0	0
Securities purchased with deterioration in credit quality	0	0
Collateral dependent securities	0	0
Federal Agency Mortgage-backed Securities [Member]
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]
Less than 12 months, fair value	49	38,380
More than 12 months, fair value	64,898	35,526
Total, fair value	64,947	73,906
Less than 12 months, unrealized losses	0	(4,807)
More than 12 months, unrealized losses	(13,006)	(5,981)
Total, unrealized losses	(13,006)	(10,788)
Federal Agency Collateralized Mortgage Obligations (CMO) [Member]
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]
Less than 12 months, fair value	768	20,997
More than 12 months, fair value	22,528	5,103
Total, fair value	23,296	26,100
Less than 12 months, unrealized losses	(4)	(885)
More than 12 months, unrealized losses	(2,042)	(791)
Total, unrealized losses	(2,046)	(1,676)
Federal Agency Debt [Member]
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]
Less than 12 months, fair value	5,520	26,383
More than 12 months, fair value	46,054	21,956
Total, fair value	51,574	48,339
Less than 12 months, unrealized losses	(72)	(1,529)
More than 12 months, unrealized losses	(4,193)	(2,759)
Total, unrealized losses	(4,265)	(4,288)
Municipal Bonds [Member]
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]
Less than 12 months, fair value	0	2,176
More than 12 months, fair value	4,170	2,021
Total, fair value	4,170	4,197
Less than 12 months, unrealized losses	0	(315)
More than 12 months, unrealized losses	(672)	(354)
Total, unrealized losses	(672)	(669)
US Treasuries [Member]
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]
Less than 12 months, fair value	14,267	143,989
More than 12 months, fair value	147,383	16,600
Total, fair value	161,650	160,589
Less than 12 months, unrealized losses	(465)	(3,884)
More than 12 months, unrealized losses	(4,671)	(1,524)
Total, unrealized losses	(5,136)	(5,408)
SBA Pools [Member]
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]
Less than 12 months, fair value	288	3,743
More than 12 months, fair value	9,143	6,763
Total, fair value	9,431	10,506
Less than 12 months, unrealized losses	(1)	(365)
More than 12 months, unrealized losses	(2,061)	(1,423)
Total, unrealized losses	$ (2,062)	$ (1,788)