Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Details)

v3.10.0.1
Related Party Transactions (Details)
3 Months Ended 12 Months Ended
Jun. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2017
CNY (¥)
Related Party Transaction [Line Items]            
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders   $ 21,332,000        
Restricted Cash, Current   13,970,000 $ 0      
Payments of Ordinary Dividends, Noncontrolling Interest $ 19,949,000   0 $ 0    
Dividends 31,998,000          
Related party service fees   202,000 1,006,000 3,294,000    
Note payable to related party         $ 14,236,000 ¥ 97,600,000
Interest expense on note payable to related party   0 429,000 $ 1,041,000    
Accounts payable to related party   $ 12,000 $ 89,000      
United States of America, Dollars            
Related Party Transaction [Line Items]            
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders 21,332,000          
Due from Joint Ventures 53,330,000          
Chinese Yuan Renminbi [Member]            
Related Party Transaction [Line Items]            
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders 136,539,000          
Due from Joint Ventures $ 341,347,000