Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions (Details)

v3.8.0.1
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