Other Comprehensive Income (Loss) - Reclassification out of AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Gain on securities transactions	$ 210	$ 2,025	$ 370
Other non-interest expense	5,515	8,867	14,556
Total before tax	116,876	126,181	76,257
Income tax benefit	(30,703)	(34,132)	(18,654)
Net income	86,173	92,049	57,603
Accumulated Other Comprehensive Income (Loss) Components
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before tax	(2,467)	(2,019)	(3,914)
Income tax benefit	690	702	819
Net income	(1,777)	(1,317)	(3,095)
Accumulated Other Comprehensive Income (Loss) Components | Reclassification adjustment for gain included in net income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Gain on securities transactions	210	2,025	370
Accumulated Other Comprehensive Income (Loss) Components | Reclassification adjustment of actuarial net (loss) included in net income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other non-interest expense	$ (2,677)	$ (4,044)	$ (4,284)