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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, FOREIGN CURRENCY AND ACCUMULATED OTHER COMPREHENSIVE LOSS, NET OF TAX (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Accounting Policies [Abstract]          
Material gains or losses from foreign currency transactions $ 0 $ 0 $ 0 $ 0  
Accumulated Other Comprehensive Loss Net of Tax [Abstract]          
Foreign currency translation adjustment (10,213,000)   (10,213,000)   $ (7,159,000)
Accumulated net unrealized loss on investments, net of tax (160,000)   (160,000)   (435,000)
Total accumulated other comprehensive loss (10,373,000)   (10,373,000)   $ (7,594,000)
Reclassification out of accumulated other comprehensive loss $ 0 $ 0 $ 0 $ 0