Investment Securities - Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 401,006	$ 374,415
Allowance for Credit Losses	(286)	(286)
Gross Unrealized Gains	165	1,644
Gross Unrealized Losses	(59,797)	(5,818)
Fair Value	341,088	369,955
U.S. government sponsored agencies
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	50,990	36,431
Allowance for Credit Losses	0	0
Gross Unrealized Gains	12	86
Gross Unrealized Losses	(6,564)	(1,004)
Fair Value	44,438	35,513
States and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	151,320	151,688
Allowance for Credit Losses	(286)	(286)
Gross Unrealized Gains	153	1,006
Gross Unrealized Losses	(29,109)	(2,270)
Fair Value	122,078	150,138
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	112,095	110,708
Allowance for Credit Losses	0	0
Gross Unrealized Gains	0	370
Gross Unrealized Losses	(12,125)	(919)
Fair Value	99,970	110,159
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	86,601	75,588
Allowance for Credit Losses	0	0
Gross Unrealized Gains	0	182
Gross Unrealized Losses	(11,999)	(1,625)
Fair Value	$ 74,602	$ 74,145

Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity).

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-Publisher FASB
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Amount excluding accrued interest, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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