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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

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