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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Earnings Per Share (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Shares
Basic (in shares)	18,996	18,617	18,218
Effect of dilutive stock options (in shares)	582	810	659
Diluted (in shares)	19,578	19,427	18,877
Per Share Amount
Basic (in dollars per share)	$ 4.60	$ 3.68	$ 1.30
Effect of dilutive stock options (in dollars per share)	(0.13)	(0.15)	(0.05)
Diluted (in dollars per share)	$ 4.47	$ 3.53	$ 1.25

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