EARNINGS PER COMMON SHARE - Computation of earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator:
Net income available for common shareholders	$ 3,820	$ 5,524
Denominator:
Basic weighted average shares (in shares)	9,503,715	9,418,318
Earnings per common share - basic (in dollars per share)	$ 0.40	$ 0.59
Numerator:
Net income available for common shareholders	$ 3,820	$ 5,524
Denominator:
Basic weighted average shares (in shares)	9,503,715	9,418,318
Total diluted effect of common stock equivalents
Total diluted effect of common stock equivalents (in shares)	228,959	344,284
Diluted weighted average shares (in shares)	9,732,674	9,762,602
Earnings per common share - diluted (in dollars per share)	$ 0.39	$ 0.57
Total potentially dilutive securities	82,970	0
Stock options
Total diluted effect of common stock equivalents
Diluted effect of common stock equivalents	16,023	57,139
Time Vesting Units
Total diluted effect of common stock equivalents
Diluted effect of common stock equivalents	125,228	189,538
Financial Performance Units
Total diluted effect of common stock equivalents
Diluted effect of common stock equivalents	87,708	83,954
Market Performance Units
Total diluted effect of common stock equivalents
Diluted effect of common stock equivalents	0	13,653