EARNINGS PER SHARE - Reconciliation of Basic and Diluted Earnings Per Share Computations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Numerator for basic and diluted earnings per share:
Net income	$ 203,247	$ 134,837	$ 97,740
Denominator:
Weighted basic shares outstanding (in shares)	54,514	55,479	55,845
Dilutive effect of equity-based compensation awards (in shares)	247	211	284
Weighted dilutive shares outstanding (in shares)	54,761	55,690	56,129
Basic earnings per share (in dollars per share)	$ 3.73	$ 2.43	$ 1.75
Diluted earnings per share (in dollars per share)	$ 3.71	$ 2.42	$ 1.74