REVENUE - Schedule of Disaggregation of Revenues (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) revenue_sub-stream	Sep. 30, 2018 USD ($)
Revenue [Abstract]
Net sales	$ 158,595	$ 155,043	$ 477,178	$ 480,140
United States
Revenue [Abstract]
Net sales	112,811	115,155	353,111	360,842
Foreign Countries
Revenue [Abstract]
Net sales	45,784	39,888	124,067	119,298
Product Sales Revenue
Revenue [Abstract]
Net sales	157,517	154,026	$ 473,942	476,751
Number of sub-streams of revenue | revenue_sub-stream			4
Product Sales
Revenue [Abstract]
Net sales	149,862	145,637	$ 449,878	451,087
Co-manufacturing
Revenue [Abstract]
Net sales	5,911	6,629	19,112	19,682
Bill and Hold
Revenue [Abstract]
Net sales	1,056	1,336	3,182	4,180
Consignment
Revenue [Abstract]
Net sales	688	424	1,770	1,802
Royalty Revenue
Revenue [Abstract]
Net sales	$ 1,078	$ 1,017	$ 3,236	$ 3,389