Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Details)

v3.8.0.1
Related Party Transactions (Details) - USD ($)
12 Months Ended
Dec. 11, 2017
Oct. 03, 2017
May 04, 2016
Jan. 13, 2015
Jul. 30, 2014
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 29, 2014
Related Party Transaction                    
Management advisory fees           $ 3,777,000 $ 3,584,000 $ 590,000    
Affiliated Entity                    
Related Party Transaction                    
Annual monitoring fee                   $ 5,000,000
Investor                    
Related Party Transaction                    
Expenses from transactions with related party         $ 1,600,000          
Proceeds from contributed capital       $ 1,600,000            
Board of Managers                    
Related Party Transaction                    
Proceeds from contributed capital               1,538,000    
Unsecured Debt | Floating Rate Senior Unsecured Notes due 2022                    
Related Party Transaction                    
Debt instrument face amount   $ 525,000,000 $ 525,000,000              
Debt extinguishment costs $ 6,043,000 $ 32,284,000       47,875,000 0      
Unsecured Debt | Floating Rate Senior Unsecured Notes due 2022 | Board of Directors                    
Related Party Transaction                    
Debt instrument face amount     $ 4,000,000              
Debt extinguishment costs           338,000        
Payment for financing expenses           362,000 300,000      
Unsecured Debt | Floating Rate Senior Unsecured Notes due 2022 | LIBOR                    
Related Party Transaction                    
Variable rate on spread     10.75%              
Debt instrument, interest rate floor     1.00%              
Unsecured Debt | Floating Rate Senior Unsecured Notes due 2022 | LIBOR | Board of Directors                    
Related Party Transaction                    
Variable rate on spread     10.75%              
Debt instrument, interest rate floor     1.00%              
Unsecured Debt | Senior Unsecured Notes due 2025                    
Related Party Transaction                    
Debt instrument face amount           300,000,000        
Advisory Services And Monitors Agreement - One-Time Management Fee | Affiliated Entity                    
Related Party Transaction                    
Expenses from transactions with related party                 $ 8,000,000  
Advisory Services And Monitors Agreement - Annual Advisory Fee | Affiliated Entity                    
Related Party Transaction                    
Expenses from transactions with related party                 $ 500,000  
Services Agreement | Affiliated Entity                    
Related Party Transaction                    
Expenses from transactions with related party               1,616,000    
Operating Lease Rental Payments | Corporate Joint Venture                    
Related Party Transaction                    
Revenue from related parties           295,000 187,000 0    
Manufacturing Costs | Corporate Joint Venture                    
Related Party Transaction                    
Revenue from related parties           17,470,000 10,707,000 0    
Services | Corporate Joint Venture                    
Related Party Transaction                    
Revenue from related parties           12,248,000 8,169,000 0    
Product Demonstration Costs | Corporate Joint Venture                    
Related Party Transaction                    
Revenue from related parties           $ 2,175,000 $ 1,663,000 $ 0