REGULATORY CAPITAL REQUIREMENTS (Details) $ in Thousands	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Banking Regulation, Total Capital, Actual	$ 597,708	$ 577,440
Banking Regulation, Total Risk-Based Capital Ratio, Actual	0.1485	0.1436
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum	0.1050	0.1050
Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum	0.1000	0.1000
Banking Regulation, Tier One Risk-Based Capital, Actual	$ 559,552	$ 538,153
Banking Regulation, Tier One Risk-Based Capital Ratio, Actual	0.1390	0.1338
Banking Regulation, Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum	0.0850	0.0850
Banking Regulation, Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum	0.0600	0.0600
Common equity tier I capital	$ 516,552	$ 495,153
Common Equity Tier I Risk Based Capital Ratio	12.83%	12.31%
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	7.00%	7.00%
Banking Regulation, Tier One Leverage Capital, Actual	$ 559,552	$ 538,153
Banking Regulation, Excess Tier One Leverage Capital Ratio, Actual	0.0984	0.0940
Banking Regulation, Tier One Leverage Capital Ratio, Capital Adequacy, Minimum	0.0400	0.0400
Subsidiaries
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Banking Regulation, Total Capital, Actual	$ 569,146	$ 549,221
Banking Regulation, Total Risk-Based Capital Ratio, Actual	0.1419	0.1370
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum	0.1050	0.1050
Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum	0.1000	0.1000
Banking Regulation, Tier One Risk-Based Capital, Actual	$ 530,990	$ 509,934
Banking Regulation, Tier One Risk-Based Capital Ratio, Actual	0.1324	0.1272
Banking Regulation, Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum	0.0850	0.0850
Banking Regulation, Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum	0.0800	0.0800
Common equity tier I capital	$ 530,990	$ 509,934
Common Equity Tier I Risk Based Capital Ratio	13.24%	12.72%
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	7.00%	7.00%
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	6.50%	6.50%
Banking Regulation, Tier One Leverage Capital, Actual	$ 530,990	$ 509,934
Banking Regulation, Excess Tier One Leverage Capital Ratio, Actual	0.0935	0.0891
Banking Regulation, Tier One Leverage Capital Ratio, Capital Adequacy, Minimum	0.0400	0.0400
Banking Regulation, Tier One Leverage Capital Ratio, Well Capitalized, Minimum	0.0500	0.0500