EARNINGS PER SHARE - Earnings Per Share Computations (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Number of antidilutive shares	0	0	0	0
Weighted average shares outstanding for basic earnings per common share	25,479,654	25,418,712	25,472,185	25,484,329
Dilutive effect of stock based awards and warrants	155,634	68,590	136,470	134,072
Weighted average shares outstanding for diluted earnings per common share	25,635,288	25,487,302	25,608,655	25,618,401
Basic earnings per common share (in dollars per share)	$ 0.95	$ 0.89	$ 2.81	$ 2.34
Diluted earnings per common share (in dollars per share)	$ 0.94	$ 0.89	$ 2.79	$ 2.33