Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 9,399	$ 23,442	$ 23,185	$ 66,696
Other comprehensive income (loss), net of tax:
Amortization of actuarial gains, net of taxes of $31 and $2, respectively, and of $93 and ($1), respectively.	(69)	(4)	(207)	(19)
Amortization of prior service credits, net of taxes of $2 and $ - for the three and nine months ended September 30, 2022.		(5)		(21)
Change in net unrealized gains on securities, net of taxes of $2,423 and $10,266, respectively, and of $2,516 and $29,925, respectively.	(5,398)	(22,797)	(5,815)	(66,658)
Net unrealized gains on cashflow hedges, net of taxes of ($132) and ($3,668), respectively, and of ($624) and ($12,544), respectively.	294	8,190	1,473	27,856
Change in fair value of liabilities related to instrument-specific credit risk, net of taxes of ($116) and $184, respectively, and of ($47) and $389, respectively.	261	(414)	106	(768)
Other comprehensive loss, net of tax:	(4,912)	(15,030)	(4,443)	(39,610)
Comprehensive net income	$ 4,487	$ 8,412	$ 18,742	$ 27,086