QUARTERLY RESULTS OF OPERATIONS - UNAUDITED - Schedule of Unaudited Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 285,887	$ 307,679	$ 261,110	$ 100,743	$ 119,385	$ 122,833	$ 103,599	$ 107,852	$ 955,419	$ 453,669	$ 396,647
Gross profit	185,036	201,564	160,923	79,447	95,997	95,851	82,004	85,256	626,970	359,108	312,134
Net income (loss)	$ (3,616)	$ (24,507)	$ (7,915)	$ 7,669	$ 20,854	$ 17,629	$ 11,233	$ 11,476	$ (28,369)	$ 61,192	$ 49,106
Diluted net income (loss) per share (in dollars per share)	$ (0.04)	$ (0.25)	$ (0.09)	$ 0.19	$ 0.50	$ 0.42	$ 0.27	$ 0.27	$ (0.35)	$ 1.47	$ 1.17