EARNINGS PER SHARE - Reconciliation (Details) - $ / shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Shares
Basic (in shares)	19,243	18,987	19,229	18,928
Effect of dilutive stock options (in shares)	375	595	407	658
Diluted (in shares)	19,618	19,582	19,636	19,586
Per Share Amount
Basic (in dollars per share)	$ 1.16	$ 1.02	$ 2.08	$ 1.98
Effect of dilutive stock options (in dollars per share)	(0.02)	(0.03)	(0.04)	(0.06)
Diluted (in dollars per share)	$ 1.14	$ 0.99	$ 2.04	$ 1.92