Investment Securities - Schedule of Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Investment [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 1,727,363	$ 1,007,834
Gross Unrealized/Unrecognized Holding Gains	36,291	52,235
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	9,514	728
Debt Securities, Available-for-sale	1,754,140	1,059,341
Obligations of States and Political Subdivisions
Investment [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	366,933	279,245
Gross Unrealized/Unrecognized Holding Gains	22,682	25,973
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	24
Debt Securities, Available-for-sale	389,591	305,218
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Investment [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	849,114	726,589
Gross Unrealized/Unrecognized Holding Gains	13,437	26,248
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	8,088	728
Debt Securities, Available-for-sale	854,463	752,109
Corporate Debt Securities
Investment [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	11,250	2,000
Gross Unrealized/Unrecognized Holding Gains	169	14
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	7
Debt Securities, Available-for-sale	11,412	$ 2,014
Collateralized Loan Obligations
Investment [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	500,066
Gross Unrealized/Unrecognized Holding Gains	3
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	1,395
Debt Securities, Available-for-sale	$ 498,674

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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