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COMPONENTS OF THE COMPANY'S CONDENSED CONSOLIDATED BALANCE SHEETS Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
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Balance Sheet Related Disclosures [Abstract] |  |
Prepaid legal fees | $ 1,906 | $ 212
Prepaid income tax | 513 | 2,431
Prepaid maintenance agreements | 969 | 1,399
Interest receivable | 1,177 | 743
Advance to suppliers | 2,262 | 69
Other | 4,004 | 3,861
Total | $ 10,831 | $ 8,715

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