Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 273,453	$ 389,627
Net unrealized gains (losses)	17,265	(64,311)
Less: net realized (gains) losses reclassified to earnings	(1,579)	(141)
Net change in pension plan benefits	0	0
Ending balance	289,783	330,910
Gains and Losses on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,589)	0
Net unrealized gains (losses)	47	(503)
Less: net realized (gains) losses reclassified to earnings	287	(59)
Net change in pension plan benefits	0	0
Ending balance	(1,255)	(562)
Unrealized Gains and Losses on Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(130,875)	12,975
Net unrealized gains (losses)	17,218	(63,808)
Less: net realized (gains) losses reclassified to earnings	(1,866)	(82)
Net change in pension plan benefits	0	0
Ending balance	(115,523)	(50,915)
Defined Benefit Pension Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(7,031)	(6,020)
Net unrealized gains (losses)	0	0
Less: net realized (gains) losses reclassified to earnings	0	0
Net change in pension plan benefits	0	0
Ending balance	(7,031)	(6,020)
Accumulated Other Comprehensive Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(139,495)	6,955
Ending balance	$ (123,809)	$ (57,497)