EARNINGS PER COMMON SHARE - Computation of earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net income available for common shareholders	$ 3,118	$ 6,221	$ 8,444	$ 16,227
Denominator:
Basic weighted average shares (in shares)	9,553,331	9,481,311	9,529,996	9,450,436
Earnings per common share - basic (in dollars per share)	$ 0.33	$ 0.66	$ 0.89	$ 1.72
Numerator:
Net income available for common shareholders	$ 3,118	$ 6,221	$ 8,444	$ 16,227
Denominator:
Basic weighted average shares (in shares)	9,553,331	9,481,311	9,529,996	9,450,436
Total diluted effect of common stock equivalents
Total diluted effect of common stock equivalents (in shares)	189,939	191,767	190,967	266,642
Diluted weighted average shares (in shares)	9,743,270	9,673,078	9,720,963	9,717,078
Earnings per common share - diluted (in dollars per share)	$ 0.32	$ 0.64	$ 0.87	$ 1.67
Stock options
Total diluted effect of common stock equivalents
Diluted effect of common stock equivalents (in shares)	0	30,599	5,341	45,934
Time Vesting Units
Total diluted effect of common stock equivalents
Diluted effect of common stock equivalents (in shares)	45,143	80,757	80,174	130,795
Financial Performance Units
Total diluted effect of common stock equivalents
Diluted effect of common stock equivalents (in shares)	144,796	80,411	105,452	85,362
Market Performance Units
Total diluted effect of common stock equivalents
Diluted effect of common stock equivalents (in shares)	0	0	0	4,551