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Subsequent Events - Additional Information (Details) - USD ($)
3 Months Ended
May 01, 2020
Mar. 31, 2020
Dec. 31, 2019
Jul. 01, 2017
Sep. 30, 2016
Sep. 10, 2016
Debt Instrument [Line Items]            
Unused borrowing capacity   $ 1,220,000 $ 1,220,000      
Senior Notes Due 2027 | Senior secured notes            
Debt Instrument [Line Items]            
Debt face amount   $ 70,000,000        
Interest rate percentage   10.25%        
Senior Notes Due 2027 | Subsequent Event | Senior secured notes            
Debt Instrument [Line Items]            
Debt face amount $ 70,000,000          
Interest rate percentage 10.25%          
Maximum borrowing capacity $ 150,000,000          
Unused borrowing capacity 80,000,000          
Convertible Promissory Notes Interest Rate 6% Due December 2020, Recourse | Convertible promissory notes            
Debt Instrument [Line Items]            
Debt face amount           $ 260,000,000
Interest rate percentage     6.00%      
Convertible Promissory Notes Interest Rate 6% Due December 2020, Recourse | Convertible debt            
Debt Instrument [Line Items]            
Debt face amount   $ 289,300,000        
Convertible Promissory Notes Interest Rate 6% Due December 2020, Recourse | Subsequent Event | Convertible debt            
Debt Instrument [Line Items]            
Repayments of convertible debt 70,000,000          
Additional Convertible Notes | Convertible debt            
Debt Instrument [Line Items]            
Debt face amount   30,000,000        
10% convertible promissory notes due December 2021 | Convertible promissory notes            
Debt Instrument [Line Items]            
Debt face amount   $ 290,000,000        
Interest rate percentage   10.00%        
10% convertible promissory notes due December 2021 | Convertible debt            
Debt Instrument [Line Items]            
Debt face amount   $ 319,300,000        
10% convertible promissory notes due December 2021 | Subsequent Event | Convertible debt            
Debt Instrument [Line Items]            
Repayments of convertible debt $ 70,000,000          
Period One | Senior Notes Due 2027 | Senior secured notes            
Debt Instrument [Line Items]            
Redemption price   108.00%        
Period Two | Senior Notes Due 2027 | Senior secured notes            
Debt Instrument [Line Items]            
Redemption price   104.00%        
Period Three | Senior Notes Due 2027 | Senior secured notes            
Debt Instrument [Line Items]            
Redemption price   102.00%        
Period Four | Senior Notes Due 2027 | Senior secured notes            
Debt Instrument [Line Items]            
Redemption price   100.00%        
Period Five | Senior Notes Due 2027 | Senior secured notes            
Debt Instrument [Line Items]            
Redemption price   101.00%        
Affiliated entity | Convertible Promissory Notes Interest Rate 6% Due December 2020, Recourse | Convertible promissory notes            
Debt Instrument [Line Items]            
Interest rate percentage       6.00% 5.00%  
Affiliated entity | 10% convertible promissory notes due December 2021 | Convertible promissory notes            
Debt Instrument [Line Items]            
Interest rate percentage   10.00%