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SECURITIES - Summary of Available For Sale Securities (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
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Schedule of Available-for-sale Securities |  |
Amortized Cost | $ 1,400,783,000 | $ 1,376,969,000
Gross Unrealized Gain | 224,000 | 30,244,000
Gross Unrealized Losses | (215,479,000) | (8,655,000)
Allowance for Credit Losses | 0 | 0
Fair Value | 1,185,528,000 | 1,398,558,000
Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | 128,242,000 | 0
Allowance for Credit Losses | 0 |
U.S. Treasury securities |  |
Schedule of Available-for-sale Securities |  |
Amortized Cost | 3,057,000 | 900,000
Gross Unrealized Gain | 0 | 0
Gross Unrealized Losses | (23,000) | 0
Allowance for Credit Losses | 0 | 0
Fair Value | 3,034,000 | 900,000
U.S. government sponsored agencies |  |
Schedule of Available-for-sale Securities |  |
Amortized Cost | 156,184,000 | 145,858,000
Gross Unrealized Gain | 0 | 39,000
Gross Unrealized Losses | (29,223,000) | (2,445,000)
Allowance for Credit Losses | 0 | 0
Fair Value | 126,961,000 | 143,452,000
Mortgage-backed securities: residential |  |
Schedule of Available-for-sale Securities |  |
Amortized Cost | 578,175,000 | 487,157,000
Gross Unrealized Gain | 67,000 | 4,455,000
Gross Unrealized Losses | (85,934,000) | (4,936,000)
Allowance for Credit Losses | 0 | 0
Fair Value | 492,308,000 | 486,676,000
Mortgage-backed securities: commercial |  |
Schedule of Available-for-sale Securities |  |
Amortized Cost | 0 | 522,000
Gross Unrealized Gain | 0 | 1,000
Gross Unrealized Losses | 0 | 0
Allowance for Credit Losses | 0 | 0
Fair Value | 0 | 523,000
State and municipal securities |  |
Schedule of Available-for-sale Securities |  |
Amortized Cost | 663,367,000 | 742,532,000
Gross Unrealized Gain | 157,000 | 25,749,000
Gross Unrealized Losses | (100,299,000) | (1,274,000)
Allowance for Credit Losses | 0 | 0
Fair Value | 563,225,000 | $ 767,007,000
Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | 128,242,000 |
Gross Unrealized Gain | 0 |
Gross Unrealized Losses | (17,213,000) |
Allowance for Credit Losses | 0 |
Fair Value | $ 111,029,000 |

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