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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
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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

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