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COMPONENTS OF THE COMPANY'S CONDENSED CONSOLIDATED BALANCE SHEETS Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Balance Sheet Related Disclosures [Abstract]    
Prepaid legal fees $ 3,698 $ 212
Prepaid income tax 464 2,431
Prepaid maintenance agreements 1,443 1,399
Interest receivable 1,200 743
Advance to suppliers 6,072 69
Other 4,025 3,861
Total $ 16,902 $ 8,715