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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 117,390	$ 125,419	$ 117,655
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on available for sale securities arising during the period, after reclassifications	41,365	(204,376)	(13,788)
Change in minimum pension liability, after reclassifications	(263)	8,101	2,602
Change in joint beneficiary agreement liability	(366)	1,389	(113)
Other comprehensive income (loss)	40,736	(194,886)	(11,299)
Comprehensive income (loss)	$ 158,126	$ (69,467)	$ 106,356

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