Quarterly report pursuant to Section 13 or 15(d)

Non-Controlling Interest Non-Controlling Interest (Narrative) (Details)

v3.10.0.1
Non-Controlling Interest Non-Controlling Interest (Narrative) (Details) - USD ($)
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Noncontrolling Interest [Line Items]      
Non-controlling Interest, Ownership Percentage by Parent 60.00%    
Restricted Cash, Current $ 13,970,000 $ 0 $ 0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders 21,332,000    
Payments of Ordinary Dividends, Noncontrolling Interest 19,949,000 $ 0  
Non-controlling Interest [Member]      
Noncontrolling Interest [Line Items]      
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders $ 21,332,000