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Investment Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Investment securities available-for-sale |  |
Amortized Cost | $ 893,525 | $ 860,258
Unrealized Gains | 223 | 5,362
Unrealized Losses | (94,951) | (11,971)
Fair Value | 798,797 | 853,649
Amortized Cost | 331,741 | 352,061
Unrealized Gains | 2 | 1,110
Unrealized Losses | (37,794) | (3,494)
Fair Value | 293,949 | 349,677
Amortized Cost | 1,225,266 | 1,212,319
Unrealized Gains | 225 | 6,472
Unrealized Losses | (132,745) | (15,465)
Fair Value | 1,092,746 | 1,203,326
U. S. Treasury and agencies |  |
Investment securities available-for-sale |  |
Amortized Cost | 3,643 | 5,028
Unrealized Gains | 66 | 75
Fair Value | 3,709 | 5,103
Obligations of state and political agencies. |  |
Investment securities available-for-sale |  |
Amortized Cost | 139,102 | 144,543
Unrealized Gains | 2 | 1,110
Unrealized Losses | (12,927) | (349)
Fair Value | 126,177 | 145,304
Mortgage backed securities - Residential agency |  |
Investment securities available-for-sale |  |
Amortized Cost | 740,734 | 717,781
Unrealized Gains | 27 | 1,213
Unrealized Losses | (88,254) | (11,837)
Fair Value | 652,507 | 707,157
Amortized Cost | 192,639 | 207,518
Unrealized Losses | (24,867) | (3,145)
Fair Value | 167,772 | 204,373
Mortgage backed securities - Commercial |  |
Investment securities available-for-sale |  |
Amortized Cost | 80,077 | 88,362
Unrealized Gains |  | 2,674
Unrealized Losses | (3,947) | (123)
Fair Value | 76,130 | 90,913
Asset backed securities |  |
Investment securities available-for-sale |  |
Amortized Cost | 40 | 52
Unrealized Gains |  | 2
Fair Value | 40 | 54
Corporate bonds |  |
Investment securities available-for-sale |  |
Amortized Cost | 69,031 | 49,035
Unrealized Gains | 130 | 1,398
Unrealized Losses | (2,750) | (11)
Fair Value | $ 66,411 | $ 50,422

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