EARNINGS PER SHARE ("EPS") - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Computation of Basic earnings per share:
Net income	$ 152,256	$ 88,505
Weighted average shares outstanding—basic (in shares)	115,702	113,862
Basic earnings per share (in dollars per share)	$ 1.32	$ 0.78
Computation of Diluted earnings per share:
Net income	$ 152,256	$ 88,505
Weighted average shares outstanding—basic (in shares)	115,702	113,862
Add: dilutive effect of common stock equivalents (in shares)	1,428	1,094
Weighted average common shares outstanding—diluted (in shares)	117,130	114,956
Diluted earnings per share (in dollars per share)	$ 1.30	$ 0.77