Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 110,258	$ 92,437
Unrealized gains and losses on debt securities:
Change in unrealized holding gains and losses, net	(41,553)	93,657
Less: Reclassification adjustment for net (gains) losses included in net income	(139)	433
Amortization of net unrealized loss on securities transferred from available-for-sale to held-to-maturity	8,789	9,983
Change in unrealized gains and losses on debt securities	(32,903)	104,073
Unrealized gains and losses on derivative hedges:
Change in unrealized gains and losses on derivative hedges, net	(13,658)	(1,527)
Less: Reclassification adjustment for net gains included in net income	(3,660)	(2,561)
Change in unrealized gains and losses on derivative hedges	(17,318)	(4,088)
Other comprehensive (loss) income, before tax	(50,221)	99,985
Income tax benefit (expense)	12,618	(24,026)
Other comprehensive (loss) income	(37,603)	75,959
Comprehensive income	$ 72,655	$ 168,396