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Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Prepaid Expenses And Other Current Assets [Line Items] |  |
Equipment maintenance and services | $ 586 | $ 689
Prepaid VAT | 553 | 558
Prepaid insurance | 356 | 455
Deferred costs | 5 | 206
Prepaid taxes | 73 | 105
Interest receivable | 29 | 63
Other | 42 | 22
Total | $ 1,644 | $ 2,098

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- Definition Sum of the carrying amounts as of the balance sheet date of deferred costs capitalized at the end of the reporting period that are expected to be charged against earnings within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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