REVENUE, Revenue Recognition (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Substream	Jun. 30, 2017 USD ($)
Revenue [Abstract]
Total revenue	$ 163,687	$ 147,082	$ 325,097	$ 284,810
Domestic Revenue [Member]
Revenue [Abstract]
Total revenue	125,019	113,227	245,687	219,527
Foreign Revenue [Member]
Revenue [Abstract]
Total revenue	38,668	33,855	79,410	65,283
Product Sales Revenue [Member]
Revenue [Abstract]
Total revenue	162,770	146,354	$ 322,725	282,702
Number of sub-streams of revenue | Substream			4
Product Sales [Member]
Revenue [Abstract]
Total revenue	149,052	133,149	$ 297,834	257,772
Co-manufacturing [Member]
Revenue [Abstract]
Total revenue	11,830	11,210	20,669	21,309
Bill and Hold [Member]
Revenue [Abstract]
Total revenue	1,555	1,401	2,844	2,384
Consignment [Member]
Revenue [Abstract]
Total revenue	333	594	1,378	1,237
Royalty Revenue [Member]
Revenue [Abstract]
Total revenue	$ 917	$ 728	$ 2,372	$ 2,108