SHAREHOLDERS’ EQUITY AND EARNINGS PER COMMON SHARE - Actual and Required Capital Ratios (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Tier 1 capital to risk-weighted assets
Capital	$ 307,305	$ 171,558
Actual
Total capital to risk weighted assets	13.73%	16.50%
Common equity tier 1 capital to risk weighted assets	11.26%	15.00%
Tier 1 capital to risk weighted assets	12.19%	15.00%
Tier 1 capital to average assets	8.10%	8.90%
Leverage Capital Ratio Risk Based Capital Required For Capital Adequacy	$ 134,758	$ 69,722
Tier One Risk Based Capital Required for Capital Adequacy	134,286	62,323
Common Equity Tier One Risk Based Capital Required For Capital Adequacy	100,714	46,742
Capital Required for Capital Adequacy	$ 179,047	$ 83,097
Minimum Capital Requirement
Total capital to risk weighted assets	8.00%	8.00%
Common equity tier 1 capital to risk weighted assets	4.50%	4.50%
Tier 1 capital to average assets	6.00%	6.00%
Tier 1 capital to risk weighted assets	4.00%	4.00%
Leverage Capital Ratio Risk Based Capital Required To Be Well Capitalized	$ 168,447	$ 87,152
Tier One Risk Based Capital Required to be Well Capitalized	179,047	83,097
Common Equity Tier One Risk Based Capital Required To Be Well Capitalized	145,476	67,516
Capital Required to be Well Capitalized	$ 234,999	$ 109,065
Minimum to be Well Capitalized Under Prompt Corrective Action Provisions
Total capital to risk weighted assets	10.50%	10.50%
Common equity tier 1 capital to risk weighted assets	6.50%	6.50%
Tier 1 capital to risk weighted assets	8.00%	8.00%
Tier 1 capital to average assets	5.00%	5.00%
Leverage Capital Ratio Risk Based Total Assets	$ 272,716	$ 155,905
Tier One Risk Based Capital	272,716	155,905
Common Equity Tier One	252,096	155,905
Bank
Tier 1 capital to risk-weighted assets
Capital	$ 306,495	$ 173,458
Actual
Total capital to risk weighted assets	13.71%	16.70%
Common equity tier 1 capital to risk weighted assets	12.92%	15.20%
Tier 1 capital to risk weighted assets	12.92%	15.20%
Tier 1 capital to average assets	8.58%	9.10%
Leverage Capital Ratio Risk Based Capital Required For Capital Adequacy	$ 134,702	$ 69,683
Tier One Risk Based Capital Required for Capital Adequacy	134,151	62,273
Common Equity Tier One Risk Based Capital Required For Capital Adequacy	100,613	46,705
Capital Required for Capital Adequacy	$ 178,868	$ 83,031
Minimum Capital Requirement
Total capital to risk weighted assets	8.00%	8.00%
Common equity tier 1 capital to risk weighted assets	4.50%	4.50%
Tier 1 capital to average assets	6.00%	6.00%
Tier 1 capital to risk weighted assets	4.00%	4.00%
Leverage Capital Ratio Risk Based Capital Required To Be Well Capitalized	$ 168,378	$ 87,104
Tier One Risk Based Capital Required to be Well Capitalized	178,868	83,031
Common Equity Tier One Risk Based Capital Required To Be Well Capitalized	145,331	67,463
Capital Required to be Well Capitalized	$ 234,764	$ 108,978
Minimum to be Well Capitalized Under Prompt Corrective Action Provisions
Total capital to risk weighted assets	10.50%	10.50%
Common equity tier 1 capital to risk weighted assets	6.50%	6.50%
Tier 1 capital to risk weighted assets	8.00%	8.00%
Tier 1 capital to average assets	5.00%	5.00%
Leverage Capital Ratio Risk Based Total Assets	$ 288,906	$ 157,805
Tier One Risk Based Capital	288,906	157,805
Common Equity Tier One	$ 288,906	$ 157,805

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