Schedule II VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2013	Dec. 31, 2014	Apr. 01, 2014
Valuation and qualifying accounts
Balance at Beginning of Year	$ 25,068	$ 18,218	$ 15,569
Balance at End of Year	15,569	30,195	18,218	$ 25,068
Total	25,068	18,218	15,569	25,068
Allowance for doubtful accounts
Valuation and qualifying accounts
Balance at Beginning of Year	2,039	2,297	1,798	2,782
Additions	594	5,120	1,107	125
Deductions	835	1,923	608	868
Balance at End of Year	1,798	5,494	2,297	2,039
Total	2,039	2,297	1,798	2,782	$ 2,039	$ 1,798
Allowance for sales discounts
Valuation and qualifying accounts
Balance at Beginning of Year	3,540	2,348	2,121	3,836
Additions	978	93,431	68,620	46,989
Deductions	2,397	93,107	68,393	47,285
Balance at End of Year	2,121	2,672	2,348	3,540
Total	3,540	2,348	2,121	3,836		2,121
Allowance for sales returns
Valuation and qualifying accounts
Balance at Beginning of Year	14,554	9,532	8,586	12,905
Additions	674	112,675	94,138	67,800
Deductions	6,642	105,146	93,192	66,151
Balance at End of Year	8,586	17,061	9,532	14,554
Total	14,554	9,532	8,586	12,905		8,586
Chargeback allowance
Valuation and qualifying accounts
Balance at Beginning of Year	4,935	4,041	3,064	5,563
Additions	213	2,267	2,610	187
Deductions	2,084	1,340	1,633	815
Balance at End of Year	3,064	4,968	4,041	4,935
Total	$ 4,935	$ 4,041	$ 3,064	$ 5,563		$ 3,064