Securities - Amortized Cost and Fair Value, Held to Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 488,883	$ 416,389
Gross Unrealized Gains	112	334
Gross Unrealized Losses	(64,310)	(1,171)
Fair Value	424,685	415,552
Allowance for credit losses - held to maturity securities	(32)	(32)
Held to maturity securities, net of allowance for credit losses	488,851	416,357
Obligations of states and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	293,655	267,641
Gross Unrealized Gains	34	333
Gross Unrealized Losses	(46,717)	(685)
Fair Value	246,972	267,289
Residential mortgage backed securities:
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	22,360	24,832
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(3,375)	(92)
Fair Value	18,985	24,740
Other debt securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	19,988	22,049
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,589)	(79)
Fair Value	18,399	21,970
Government agency mortgage backed securities | Residential mortgage backed securities:
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	89,943	60,507
Gross Unrealized Gains	0	1
Gross Unrealized Losses	(6,544)	(198)
Fair Value	83,399	60,310
Government agency mortgage backed securities | Commercial mortgage backed securities:
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	17,017	1,855
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2,276)	0
Fair Value	14,741	1,855
Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	45,920	39,505
Gross Unrealized Gains	78	0
Gross Unrealized Losses	(3,809)	(117)
Fair Value	$ 42,189	$ 39,388