CONCENTRATION OF RISK, Long-Lived Assets by Geographic Area (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) supplier	Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items]
Total long-lived assets	$ 22,407	$ 19,922
Supplier Concentration Risk [Member]
Segment Reporting Information [Line Items]
Number of suppliers from which chemical materials were purchased | supplier	1
UNITED STATES
Segment Reporting Information [Line Items]
Total long-lived assets	$ 22,187	19,763
Other [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	$ 220	$ 159