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Advances to and Investments in Foreign Joint Ventures' Operations - Schedule of Financial Information of Foreign Joint Ventures (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
BOMAY |  |
Assets: |  |
Total current assets | $ 50,000 | $ 47,700
Total non-current assets | 3,457 | 3,589
Total assets | 53,457 | 51,289
Liabilities and equity: |  |
Total liabilities | 25,598 | 24,196
Total joint ventures’ equity | 27,859 | 27,093
Total liabilities and equity | 53,457 | 51,289
Revenue | 26,168 | 33,468
Gross Profit | 5,654 | 6,687
Earnings | 1,084 | 2,010
MIEFE |  |
Assets: |  |
Total current assets | 121 | 425
Total non-current assets | 15 | 17
Total assets | 136 | 442
Liabilities and equity: |  |
Total liabilities | 198 | 551
Total joint ventures’ equity | (62) | (109)
Total liabilities and equity | 136 | 442
Revenue | 89 | 1,167
Gross Profit | 23 | 481
Earnings | $ 55 | $ (631)

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