Other Comprehensive Income (Loss) - Changes in the Components of Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	$ 22,302	$ (126,257)
Total other comprehensive income (loss), tax expense (benefit)	5,589	(32,131)
Other comprehensive income (loss), net of tax	16,713	(94,126)
Securities available for sale:
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassifications, pre-tax	20,714	(134,756)
Other comprehensive income (loss) before reclassifications, tax expense (benefit)	5,183	(34,294)
Other comprehensive income (loss), before reclassifications, net of tax	15,531	(100,462)
Reclassification from AOCI, pre-tax	3,128	(99)
Reclassification from AOCI, tax expense (benefit)	800	(25)
Reclassification from AOCI, net of tax	2,328	(74)
Total other comprehensive income (loss), pre-tax	23,842	(134,855)
Total other comprehensive income (loss), tax expense (benefit)	5,983	(34,319)
Other comprehensive income (loss), net of tax	17,859	(100,536)
Derivative instruments:
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassifications, pre-tax	(1,656)	8,556
Other comprehensive income (loss) before reclassifications, tax expense (benefit)	(424)	2,177
Other comprehensive income (loss), before reclassifications, net of tax	(1,232)	6,379
Reclassification from AOCI, pre-tax	0
Reclassification from AOCI, tax expense (benefit)	0
Reclassification from AOCI, net of tax	0
Total other comprehensive income (loss), pre-tax	(1,656)	8,556
Total other comprehensive income (loss), tax expense (benefit)	(424)	2,177
Other comprehensive income (loss), net of tax	(1,232)	6,379
Amortization of net actuarial loss recognized in net periodic pension cost
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from AOCI, pre-tax	116	42
Reclassification from AOCI, tax expense (benefit)	30	11
Reclassification from AOCI, net of tax	86	31
Total defined benefit pension and post-retirement benefit plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	116	42
Total other comprehensive income (loss), tax expense (benefit)	30	11
Other comprehensive income (loss), net of tax	$ 86	$ 31