EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net income available for common shareholders	$ 6,417	$ 9,630	$ 18,693	$ 19,660
Denominator:
Basic weighted average shares	7,979,869	7,911,871	7,959,268	7,888,675
Earnings per common share - basic	$ 0.80	$ 1.22	$ 2.35	$ 2.49
Numerator:
Net income	$ 6,417	$ 9,630	$ 18,693	$ 19,660
Denominator:
Basic weighted average shares	7,979,869	7,911,871	7,959,268	7,888,675
Diluted effect of common stock equivalents:
Total diluted effect of common stock equivalents	266,484	107,136	229,998	73,833
Diluted weighted average shares	8,246,353	8,019,007	8,189,266	7,962,508
Earnings per common share - diluted	$ 0.78	$ 1.20	$ 2.28	$ 2.47
Stock options
Diluted effect of common stock equivalents:
Diluted effect of common stock equivalents	35,428		25,400
Time Vesting Units
Diluted effect of common stock equivalents:
Diluted effect of common stock equivalents	144,479	85,897	126,231	44,310
Financial Performance Units
Diluted effect of common stock equivalents:
Diluted effect of common stock equivalents	73,135	7,786	64,542	16,176
Market Performance Units
Diluted effect of common stock equivalents:
Diluted effect of common stock equivalents	13,442	13,453	13,825	13,347