NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Details 4) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Impairment of Long-Lived Assets
Impairment charge		$ 0	$ 2,947,000	$ 0
Property, plant and equipment, net		$ 68,728,000	$ 51,343,000
Subsidiary in Venezuela
Impairment of Long-Lived Assets
Impairment charge	$ 2,900,000
Property, plant and equipment, net	$ 0