EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net income	$ 126,030	$ 74,177
Denominator (shares in 000's):
Basic weighted average shares outstanding (in shares)	58,606,000	59,642,000
Effect of dilutive securities - Stock options and awards (in shares)	666,000	657,000
Diluted weighted average shares outstanding (in shares)	59,272,000	60,299,000
Basic earnings per share (in dollars per share)	$ 2.15	$ 1.24
Diluted earnings per share (in dollars per share)	$ 2.13	$ 1.23
Anti-dilutive shares excluded from the computation of diluted earnings per share	69,614	89,592