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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Feb. 01, 2021 shares | Sep. 30, 2021 item | Dec. 31, 2023 USD ($) segment customer item | Dec. 31, 2022 USD ($) customer | Dec. 31, 2021 USD ($) customer | Jan. 01, 2021 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |
Common stock converted into right to receive shares (in shares) | shares | 0.6480 |  |  |  |  |
Number of real estate investments dissolved | item |  | 2 |  |  |  |
Number of branch locations | item |  |  | 60 |  |  |
Accrued interest related to debt securities reversed against interest income |  |  | $ 0 | $ 0 |  |
Non-accrual debt securities |  |  | 0 | 0 |  |
Associated allowance for credit losses on the collectively evaluated loans |  |  | 55,400,000 | 57,100,000 |  |
Collectively evaluated for impairment |  |  | 10,730,000,000 | 10,520,000,000 |  |
Individually evaluated for impairment |  |  | 35,400,000 | 47,600,000 |  |
Associated allowance for credit losses on the individually evaluated loans |  |  | 16,300,000 | 26,400,000 |  |
Unrecognized Tax Benefits |  |  | $ 0 | $ 0 |  |
Number of Reportable Segments | segment |  |  | 1 |  |  |
Number of Operating Segments | segment |  |  | 1 |  |  |
Customers that accounted for more than 10% of the Company's consolidated revenue | customer |  |  | 0 | 0 | 0 |
Retained earnings |  |  | $ 813,007,000 | $ 762,762,000 |  |
Held-to-maturity securities |  |  |  |  |  | $ 0
Core Deposit Intangibles |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible Asset Useful Life |  |  | 10 years |  |  |
Cumulative Effect, CECL Adoption, Adjustment | Accounting Standards Update 2016-13 |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Decrease in allowance for credit losses |  |  |  |  | $ 3,900,000 |
Retained earnings |  |  |  |  |  | $ 1,700,000
Reserve for unfunded commitments |  |  |  |  | $ 1,400,000 |
Maximum | Buildings |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Property Plant and Equipment Useful Life |  |  | 50 years |  |  |
Maximum | Furniture Fixtures And Equipment [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Property Plant and Equipment Useful Life |  |  | 10 years |  |  |
Minimum | Buildings |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Property Plant and Equipment Useful Life |  |  | 40 years |  |  |
Minimum | Furniture Fixtures And Equipment [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Property Plant and Equipment Useful Life |  |  | 3 years |  |  |

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