Summary of Significant Accounting Policies - Schedule of Accumulated Other Comprehensive Income, Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,204,413	$ 992,477
Other comprehensive income (loss) before reclassifications	(45,086)	66,773
Amounts reclassified from AOCI	1,568	(1,106)
Other comprehensive (loss)/income net of tax	(43,518)	65,667
Ending balance	1,192,844	1,077,492
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	3,853	(13,923)
Other comprehensive (loss)/income net of tax	(43,518)	65,667
Ending balance	(39,665)	51,744
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Including Noncontrolling Interest | Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(6,932)	(13,937)
Other comprehensive income (loss) before reclassifications	(68,148)	53,211
Amounts reclassified from AOCI	(3)	(783)
Other comprehensive (loss)/income net of tax	(68,151)	52,428
Ending balance	(75,083)	38,491
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Including Noncontrolling Interest | Held-to-Maturity Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	16,153	22,829
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from AOCI	(19)	(1,704)
Other comprehensive (loss)/income net of tax	(19)	(1,704)
Ending balance	16,134	21,125
Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(5,368)	(22,815)
Other comprehensive income (loss) before reclassifications	23,062	13,562
Amounts reclassified from AOCI	1,590	1,381
Other comprehensive (loss)/income net of tax	24,652	14,943
Ending balance	$ 19,284	$ (7,872)