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Related Party Transactions (Details) - CHINA - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Corporate Joint Venture |  |
Related Party Transaction [Line Items] |  |
Payments for Advance to Affiliate | $ 2.0 |
Due from related parties | $ 4.0 | $ 2.0
Corporate Joint Venture |  |
Related Party Transaction [Line Items] |  |
Debt instrument, term | 1 year |
Debt instrument, interest rate, stated percentage | 3.00% |
Joint Venture Partner | Corporate Joint Venture |  |
Related Party Transaction [Line Items] |  |
Payments for Advance to Affiliate | $ 0.5 |
Due from related parties | $ 1.0 | $ 0.5

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