REGULATORY CAPITAL REQUIREMENTS (Details) $ in Thousands	6 Months Ended
Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)	Oct. 08, 2015 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Subordinated Debt, Phase-Out Period	5 years
Subordinated debentures	$ 59,231	$ 59,080	$ 15,000
Banking Regulation, Total Capital, Actual	$ 474,226	$ 455,702
Banking Regulation, Total Risk-Based Capital Ratio, Actual	0.1456	0.1444
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum	0.1050	0.1050
Banking Regulation, Tier One Risk-Based Capital, Actual	$ 423,667	$ 415,511
Banking Regulation, Tier One Risk-Based Capital Ratio, Actual	0.1301	0.1316
Banking Regulation, Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum	0.0850	0.0850
Common equity tier I capital	$ 380,667	$ 372,511
Common Equity Tier I Risk Based Capital Ratio	11.69%	11.80%
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	$ 423,667	$ 415,511
Banking Regulation, Excess Tier One Leverage Capital Ratio, Actual	0.0895	0.0955
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	$ 446,322	$ 423,540
Banking Regulation, Total Risk-Based Capital Ratio, Actual	0.1375	0.1345
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum	0.1050	0.1050
Banking Regulation, Tier One Risk-Based Capital, Actual	$ 410,763	$ 398,349
Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum	0.1000	0.1000
Banking Regulation, Tier One Risk-Based Capital Ratio, Actual	0.1265	0.1265
Banking Regulation, Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum	0.0850	0.0850
Common equity tier I capital	$ 410,763	$ 398,349
Banking Regulation, Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum	0.0800	0.0800
Common Equity Tier I Risk Based Capital Ratio	12.65%	12.65%
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	$ 410,763	$ 398,349
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	6.50%	6.50%
Banking Regulation, Excess Tier One Leverage Capital Ratio, Actual	0.0871	0.0919
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

Common Equity Tier I To Total Risk Weighted Assets Capital Ratio

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Common equity tier I capital

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Subordinated Debt, Phase-Out Period

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Amount of total capital as defined by regulatory framework.

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Ratio of minimum total risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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Ratio of Tier 1 leverage capital to average assets exceeding minimum required for capital adequacy as defined by regulatory framework.

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