CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net Income		$ 135,520	$ 110,343	$ 21,040
Available-for-Sale Debt Securities
Net change in unrealized gains (losses) on available-for-sale debt securities		(111,539)	(23,972)	22,683
Tax effect		23,805	5,115	(4,827)
Net available-for-sale securities gains reclassified into earnings	[1]	(198)	0	0
Tax effect		42	0	0
Net effect on other comprehensive income		(87,890)	(18,857)	17,856
Interest Rate Swaps
Net change in fair value of interest rate swaps		(21,459)	0	0
Tax effect		4,581	0	0
Net interest rate swap losses reclassified into earnings	[2]	91	0	0
Tax effect		(19)	0	0
Net effect on other comprehensive income		(16,806)	0	0
Employee Benefit Plans
Adjustment to funded status of employee benefit plans		(2,526)	363	792
Tax effect		608	(78)	(171)
Net employee benefit plan (gains) losses reclassified into earnings	[3]	2,080	3,198	2,757
Tax effect		(501)	(687)	(593)
Net effect on other comprehensive income		(339)	2,796	2,785
Other Comprehensive Income (Loss)		(105,035)	(16,061)	20,641
Comprehensive Income		$ 30,485	$ 94,282	$ 41,681

[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.