CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income		$ 144,781	$ 135,520	$ 110,343
Available-for-Sale Debt Securities
Net change in fair value of available-for-sale debt securities		20,317	(111,539)	(23,972)
Tax effect		(4,407)	23,805	5,115
Net available-for-sale securities gains reclassified into earnings	[1]	0	(198)	0
Tax effect		0	42	0
Net effect on other comprehensive income		15,910	(87,890)	(18,857)
Interest Rate Swaps
Net change in fair value of interest rate swaps		(5,753)	(21,459)	0
Tax effect		1,237	4,581	0
Net interest rate swap losses reclassified into earnings	[2]	12,382	91	0
Tax effect		(2,662)	(19)	0
Net effect on other comprehensive income		5,204	(16,806)	0
Employee Benefit Plans
Adjustment to funded status of employee benefit plans		142	(2,526)	363
Tax effect		(32)	608	(78)
Net employee benefit plan (gains) losses reclassified into earnings	[3]	0	2,080	3,198
Tax effect		0	(501)	(687)
Net effect on other comprehensive income		110	(339)	2,796
Net of Tax Amount		21,224	(105,035)	(16,061)
Comprehensive Income		$ 166,005	$ 30,485	$ 94,282

[1] Reclassification adjustments are comprised of realized security gains or losses. The realized gains or losses have been recorded in net gain on sale of securities in the Consolidated Statements of Net Income.

[2] Reclassification adjustments have been recorded in interest income in the Consolidated Statements of Net Income.

[3] Reclassification adjustments are comprised of realized actuarial gains or losses and settlement charges. These gains or losses and settlement charges have been recorded in salaries and employee benefits in the Consolidated Statements of Net Income.