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Commitments and Contingencies (Details) - Dec. 31, 2015 $ in Millions, ¥ in Billions | USD ($) | JPY (¥)
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Dispute Related to Customs Assessments by Yokohama Customs [Member] |  |
Commitments and Contingencies [Abstract] |  |
Estimated assessments and disputed duties | $ 35.4 | ¥ 4.3

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