GOODWILL AND INTANGIBLE ASSETS - Other Intangible Assets - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jun. 23, 2016
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 15,535,000	$ 15,535,000
Adesis, Inc. [Member]
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	16,840,000
Amortization expense related to other intangible assets	1,400,000	$ 1,400,000	$ 615,000
Future amortization expense of other intangible assets, fiscal year 2019	1,400,000
Future amortization expense of other intangible assets, fiscal year 2020	1,400,000
Future amortization expense of other intangible assets, fiscal year 2021	1,400,000
Future amortization expense of other intangible assets, fiscal year 2022	1,400,000
Future amortization expense of other intangible assets, fiscal year 2023	1,400,000
Future amortization expense of other intangible assets, thereafter	6,400,000
Goodwill	15,500,000			$ 15,535,000
Adesis, Inc. [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	$ 10,520,000
Estimated useful life	11 years 6 months
Adesis, Inc. [Member] | Internally-developed IP, Processes and Recipes [Member]
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	$ 4,820,000
Estimated useful life	15 years
Adesis, Inc. [Member] | Trade Name/Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	$ 1,500,000
Estimated useful life	10 years