EARNINGS PER SHARE - Computation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator:
Net income	$ 39,968	$ 41,781
Denominator:
Weighted average shares of common stock outstanding (in shares)	10,864	11,557
Effect of dilutive common stock equivalents (in shares)	35	81
Weighted average shares of common stock outstanding (in shares)	10,899	11,638
Earnings per share - basic (in usd per share)	$ 3.68	$ 3.62
Earnings per share - diluted (in usd per share)	$ 3.67	$ 3.59