SUPPLEMENTARY QUARTERLY FINANCIAL DATA (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Duration of fiscal year									364 days	371 days	364 days
Net revenues	$ 468,488	$ 501,669	$ 483,069	$ 221,309	$ 216,143	$ 226,534	$ 210,300	$ 203,926	$ 1,674,535	$ 856,903	$ 881,176
Gross Profit	216,530	215,137	152,629	109,843	114,075	114,125	107,632	103,283	694,139	439,115	441,370
Net income (loss)	$ (21,589)	$ (41,734)	$ (86,709)	$ 14,471	$ 9,854	$ (49,504)	$ 19,953	$ 18,828	$ (135,561)	$ (869)	$ 82,599
Basic (in dollars per share)	$ (0.55)	$ (1.06)	$ (2.21)	$ 0.43	$ 0.30	$ (1.54)	$ 0.59	$ 0.58	$ (3.61)	$ (0.03)	$ 2.56
Diluted (in dollars per share)	(0.55)	(1.06)	(2.21)	0.42	0.29	(1.54)	0.59	0.57	(3.61)	(0.03)	2.51
Cash dividends declared per common share (in dollars per share)	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.6	$ 0.6	$ 0.6