Other Comprehensive Income (Loss) - Reclassification out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before tax	$ 1,921	$ 30,917	$ 26,782	$ 58,476
Income tax benefit	(257)	(7,958)	(6,395)	(15,113)
Net of tax	1,664	22,959	20,387	43,363
Accumulated Other Comprehensive Income (Loss) Components
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before tax	(9,551)	(129)	(10,845)	(468)
Income tax benefit	2,701	37	3,067	132
Net of tax	(6,850)	(92)	(7,778)	(336)
Accumulated Other Comprehensive Income (Loss) Components | Reclassification adjustment for (loss) gain included in net income
Accumulated Other Comprehensive Income (Loss) [Line Items]
(Loss) gain on securities transactions	(9,552)	210	(10,847)	210
Accumulated Other Comprehensive Income (Loss) Components | Reclassification adjustment of actuarial net gain (loss) included in net income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other non-interest expense, net	$ 1	$ (339)	$ 2	$ (678)