Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net income	$ 87,003	$ 125,211	$ 130,353
Other comprehensive income:
Unrealized holding gains (losses) on available-for-sale securities arising during the period	5,715	(86,240)	(11,109)
Tax effect	(1,775)	24,949	2,914
Net of tax	3,940	(61,291)	(8,195)
Reclassification adjustment for realized gains included in net income	0	0	(195)
Tax effect	0	0	48
Net of tax	0	0	(147)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	9,431	46,181	3,593
Tax effect	(2,837)	(13,960)	(1,012)
Net of tax	6,594	32,221	2,581
Reclassification adjustment for (gains) losses arising during this period	(20,230)	(3,243)	1,873
Tax effect	6,086	976	(528)
Net of tax	(14,144)	(2,267)	1,345
Unrealized pension plan gains before reclassifications	941	343	0
Tax effect	(283)	(12)	0
Net of tax	658	331	0
Reclassification adjustment for realized losses included in net income	296	66	299
Tax effect	(89)	(20)	(84)
Net of tax	207	46	215
Total other comprehensive loss	(2,745)	(30,960)	(4,201)
Total comprehensive income	$ 84,258	$ 94,251	$ 126,152