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Advances to and Investments in Foreign Joint Ventures' Operations - Schedule of Activity in Investment in Foreign Joint Ventures (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
Investments in foreign joint ventures: |  |
Balance, beginning of year | $ 2,047 | $ 2,047
Balance, end of year | 2,047 | 2,047
Undistributed earnings: |  |
Balance, beginning of year | 8,087 | 8,515
Equity in earnings (loss) | 801 | 741
Dividend distributions | (589) | (1,169)
Balance, end of year | 8,299 | 8,087
Foreign currency translation: |  |
Balance, beginning of year | 970 | 1,492
Change, during the year | (653) | (522)
Balance, end of year | 317 | 970
Investments, end of year | 10,663 | 11,104
BOMAY |  |
Investments in foreign joint ventures: |  |
Balance, beginning of year | 2,033 | 2,033
Balance, end of year | 2,033 | 2,033
Undistributed earnings: |  |
Balance, beginning of year | 8,098 | 8,157
Equity in earnings (loss) | 804 | 973
Dividend distributions | (589) | (1,032)
Balance, end of year | 8,313 | 8,098
Foreign currency translation: |  |
Balance, beginning of year | 765 | 1,358
Change, during the year | (661) | (593)
Balance, end of year | 104 | 765
Investments, end of year | 10,450 | 10,896
MIEFE |  |
Investments in foreign joint ventures: |  |
Balance, beginning of year | 14 | 14
Balance, end of year | 14 | 14
Undistributed earnings: |  |
Balance, beginning of year | (11) | 358
Equity in earnings (loss) | (3) | (232)
Dividend distributions |  | (137)
Balance, end of year | (14) | (11)
Foreign currency translation: |  |
Balance, beginning of year | 205 | 134
Change, during the year | 8 | 71
Balance, end of year | 213 | 205
Investments, end of year | $ 213 | $ 208

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