Securities - Summary of Amortized Cost and Fair Values of Securities Available-for-sale (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	$ 1,423,801	$ 1,466,482
Available-for-sale Securities, Gross Unrealized Gains	547	10,492
Available-for-sale Securities, Gross Unrealized Losses	(151,210)	(22,432)
Available-for-sale Securities, Fair Value	1,273,138	1,454,542
U.S. Treasury Notes
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	32,721	18,447
Available-for-sale Securities, Gross Unrealized Gains	0	37
Available-for-sale Securities, Gross Unrealized Losses	(939)	(8)
Available-for-sale Securities, Fair Value	31,782	18,476
U.S. Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	148,844	141,096
Available-for-sale Securities, Gross Unrealized Gains	371	661
Available-for-sale Securities, Gross Unrealized Losses	(13,696)	(2,367)
Available-for-sale Securities, Fair Value	135,519	139,390
Obligations of States, Municipalities, and Political Subdivisions
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	82,261	86,454
Available-for-sale Securities, Gross Unrealized Gains	108	3,238
Available-for-sale Securities, Gross Unrealized Losses	(4,916)	(56)
Available-for-sale Securities, Fair Value	77,453	89,636
Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	741,009	756,549
Available-for-sale Securities, Gross Unrealized Gains	25	2,122
Available-for-sale Securities, Gross Unrealized Losses	(85,572)	(15,015)
Available-for-sale Securities, Fair Value	655,462	743,656
Non-Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	135,928	146,499
Available-for-sale Securities, Gross Unrealized Gains	0	4
Available-for-sale Securities, Gross Unrealized Losses	(18,191)	(1,267)
Available-for-sale Securities, Fair Value	117,737	145,236
Agency, Commercial Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	198,007	214,417
Available-for-sale Securities, Gross Unrealized Gains	0	2,795
Available-for-sale Securities, Gross Unrealized Losses	(24,900)	(3,661)
Available-for-sale Securities, Fair Value	173,107	213,551
Corporate Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	48,328	65,814
Available-for-sale Securities, Gross Unrealized Gains	21	1,586
Available-for-sale Securities, Gross Unrealized Losses	(2,388)	(54)
Available-for-sale Securities, Fair Value	45,961	67,346
Asset-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	36,703	37,206
Available-for-sale Securities, Gross Unrealized Gains	22	49
Available-for-sale Securities, Gross Unrealized Losses	(608)	(4)
Available-for-sale Securities, Fair Value	$ 36,117	$ 37,251

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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