Summary of Significant Accounting Policies - Schedule of Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Other comprehensive (loss)/income:
Other comprehensive (loss)/income before tax	$ (12,430)		$ (44,316)		$ (67,516)	$ 38,806
Other Comprehensive Income (Loss), Tax [Abstract]
Other comprehensive income/(loss), Provision (Benefit)	(2,611)		(9,305)		(14,179)	8,150
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized gains/(losses), After Tax	(11,413)		(34,321)		(56,497)	32,452
Less reclassification adjustments, Provision (Benefit)	1,594		(690)		3,160	(1,796)
Other comprehensive (loss)/income net of tax	(9,819)	$ (43,518)	(35,011)	$ 65,667	(53,337)	30,656
Securities | Available-for-Sale Securities
Other comprehensive (loss)/income:
Unrealized gain/(losses), Before Tax	(30,176)		(36,395)		(116,439)	30,961
Other comprehensive (loss)/income before tax	(30,179)		(37,389)		(116,446)	28,975
Other Comprehensive Income (Loss), Tax [Abstract]
Unrealized gains/(losses), Provision (Benefit)	(6,337)		(7,644)		(24,453)	6,502
Other comprehensive income/(loss), Provision (Benefit)	(6,338)		(7,852)		(24,454)	6,084
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized gains/(losses), After Tax	(23,839)		(28,751)		(91,986)	24,459
Other comprehensive (loss)/income net of tax	(23,841)		(29,537)		(91,992)	22,891
Securities | Held-to-Maturity Securities
Other comprehensive (loss)/income:
Less reclassification adjustments, Before Tax	865		(1,653)		842	(3,810)
Other comprehensive (loss)/income before tax	865		(1,653)		842	(3,810)
Other Comprehensive Income (Loss), Tax [Abstract]
Less reclassification adjustments, Provision (Benefit)	181		(347)		177	(800)
Other comprehensive income/(loss), Provision (Benefit)	181		(347)		177	(800)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Less reclassification adjustments, Provision (Benefit)	684		(1,306)		665	(3,010)
Other comprehensive (loss)/income net of tax	684		(1,306)		665	(3,010)
Securities | Net interest income | Available-for-Sale Securities
Other comprehensive (loss)/income:
Less reclassification adjustments, Before Tax	0		(987)		0	(1,971)
Other Comprehensive Income (Loss), Tax [Abstract]
Less reclassification adjustments, Provision (Benefit)	0		(207)		0	(415)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Less reclassification adjustments, Provision (Benefit)	0		(780)		0	(1,556)
Securities | Other income | Available-for-Sale Securities
Other comprehensive (loss)/income:
Less reclassification adjustments, Before Tax	(3)		(7)		(7)	(15)
Other Comprehensive Income (Loss), Tax [Abstract]
Less reclassification adjustments, Provision (Benefit)	(1)		(1)		(1)	(3)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Less reclassification adjustments, Provision (Benefit)	(2)		(6)		(6)	(12)
Cash Flow Hedges
Other comprehensive (loss)/income:
Unrealized gain/(losses), Before Tax	15,729		(7,050)		44,922	10,118
Less reclassification adjustments, Before Tax	1,155		1,776		3,166	3,523
Other comprehensive (loss)/income before tax	16,884		(5,274)		48,088	13,641
Other Comprehensive Income (Loss), Tax [Abstract]
Unrealized gains/(losses), Provision (Benefit)	3,303		(1,480)		9,433	2,125
Less reclassification adjustments, Provision (Benefit)	243		374		665	741
Other comprehensive income/(loss), Provision (Benefit)	3,546		(1,106)		10,098	2,866
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized gains/(losses), After Tax	12,426		(5,570)		35,489	7,993
Less reclassification adjustments, Provision (Benefit)	912		1,402		2,501	2,782
Other comprehensive (loss)/income net of tax	13,338		(4,168)		37,990	10,775
AOCI Attributable to Parent
Other comprehensive (loss)/income:
Other comprehensive (loss)/income before tax	(12,430)		(44,316)		(67,516)	38,806
Other Comprehensive Income (Loss), Tax [Abstract]
Other comprehensive income/(loss), Provision (Benefit)	(2,611)		(9,305)		(14,179)	8,150
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive (loss)/income net of tax	$ (9,819)		$ (35,011)		$ (53,337)	$ 30,656