Annual report pursuant to Section 13 and 15(d)

NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Details 4)

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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