v3.26.3
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Changes in Each Classification of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance $ 773,374 $ 709,987 $ 762,492 $ 683,911
Net current period other comprehensive income (loss) (57,303) 20,418 (54,629) 25,797
Ending balance 732,094 747,503 732,094 747,503
Total        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance (124,463) (161,121) (127,137) (166,500)
Other comprehensive income (loss) before reclassification (57,702) 20,023 (55,825) 24,608
Amounts reclassified from accumulated other comprehensive income (loss) 399 395 1,196 1,189
Net current period other comprehensive income (loss) (57,303) 20,418 (54,629) 25,797
Ending balance (181,766) (140,703) (181,766) (140,703)
Unrealized Gains and Losses on Available- for-Sales Securities        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance (123,959) (160,573) (126,609) (165,932)
Other comprehensive income (loss) before reclassification (57,702) 20,023 (55,825) 24,608
Amounts reclassified from accumulated other comprehensive income (loss) 387 385 1,160 1,159
Net current period other comprehensive income (loss) (57,315) 20,408 (54,665) 25,767
Ending balance (181,274) (140,165) (181,274) (140,165)
Defined Benefit Pension Items        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance (504) (548) (528) (568)
Other comprehensive income (loss) before reclassification 0 0 0 0
Amounts reclassified from accumulated other comprehensive income (loss) 12 10 36 30
Net current period other comprehensive income (loss) 12 10 36 30
Ending balance $ (492) $ (538) $ (492) $ (538)