Other Comprehensive Income - Changes in the Components of Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	$ 28,053	$ (3,576)
Total other comprehensive income (loss), tax expense (benefit)	7,066	(889)
Other comprehensive income (loss), net of tax	20,987	(2,687)
Securities available for sale:
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassifications, pre-tax	26,687	(6,192)
Other comprehensive income (loss) before reclassifications, tax expense (benefit)	6,717	(1,558)
Other comprehensive income (loss), before reclassifications, net of tax	19,970	(4,634)
Amortization of unrealized holding losses on securities transferred to held to maturity category, pre tax	3,044	3,275
Amortization of unrealized holding losses on securities transferred to held to maturity category, tax expense (benefit)	779	837
Amortization of unrealized holding losses on securities transferred to held to maturity category, net of tax	2,265	2,438
Total other comprehensive income (loss), pre-tax	29,731	(2,917)
Total other comprehensive income (loss), tax expense (benefit)	7,496	(721)
Other comprehensive income (loss), net of tax	22,235	(2,196)
Derivative instruments:
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassifications, pre-tax	(1,777)	(765)
Other comprehensive income (loss) before reclassifications, tax expense (benefit)	(455)	(195)
Other comprehensive income (loss), before reclassifications, net of tax	(1,322)	(570)
Total other comprehensive income (loss), pre-tax	(1,777)	(765)
Total other comprehensive income (loss), tax expense (benefit)	(455)	(195)
Other comprehensive income (loss), net of tax	(1,322)	(570)
Amortization of net actuarial loss recognized in net periodic pension cost
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amortization of net actuarial loss recognized in net periodic pension cost, pre-tax	99	106
Amortization of net actuarial loss recognized in net periodic pension cost, tax expense (benefit)	25	27
Amortization of net actuarial loss recognized in net periodic pension cost, net of tax	74	79
Total defined benefit pension and post-retirement benefit plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	99	106
Total other comprehensive income (loss), tax expense (benefit)	25	27
Other comprehensive income (loss), net of tax	$ 74	$ 79