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OTHER COMPREHENSIVE INCOME (LOSS) - Changes in the Accumulated Balances (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Changes in the accumulated balances for each component of other comprehensive income          
Balance at beginning of period $ 165,558 $ 164,743 $ 167,088 $ 170,866 $ 170,866
Current year-to-date other comprehensive loss (2,862) (4,980) (4,083) (17,418)  
Balance at end of period 165,402 163,319 165,402 163,319 167,088
Unrealized Gains (Losses) on AFS Securities          
Changes in the accumulated balances for each component of other comprehensive income          
Balance at beginning of period     (24,353) 222 222
Current year-to-date other comprehensive loss     (5,385)   (24,575)
Balance at end of period (29,738)   (29,738)   (24,353)
Other Accumulated Comprehensive Income (Loss), net of tax          
Changes in the accumulated balances for each component of other comprehensive income          
Balance at beginning of period (18,877) (12,277) (17,656) 161 161
Current year-to-date other comprehensive loss     (4,083)   (17,817)
Balance at end of period $ (21,739) $ (17,257) $ (21,739) $ (17,257) $ (17,656)