EARNINGS PER SHARE - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator for basic and diluted earnings per share:
Net income	$ 11,572	$ 976
Denominator:
Basic shares outstanding (in shares)	55,757	55,848
Dilutive effect of outstanding stock awards (in shares)	298	234
Dilutive shares outstanding (in shares)	56,055	56,082
Basic earnings per share (in USD per share)	$ 0.21	$ 0.02
Diluted earnings per share (in USD per share)	$ 0.21	$ 0.02