XML 114 R104.htm IDEA: XBRL DOCUMENT v3.20.2
Convertible Debt and Notes Payable - Notes Payable (Details) - Senior Notes - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
May 07, 2019
Mar. 31, 2019
Jun. 11, 2018
Dec. 14, 2017
Dec. 08, 2017
2024 Notes                    
Debt and Capital Lease Obligations [Line Items]                    
Debt Instrument, Face Amount           $ 53,000,000.0        
Interest rate           7.25%        
Debt Instrument, Additional amount issued   $ 25,000,000.0   $ 25,000,000.0            
Debt Instrument, Unamortized Premium $ 500,000   $ 500,000              
Interest Expense, Debt, Excluding Amortization 1,400,000 900,000 4,200,000 1,500,000            
Debt Issuance Costs, Gross         $ 600,000 $ 1,500,000        
2033 Notes                    
Debt and Capital Lease Obligations [Line Items]                    
Debt Instrument, Face Amount             $ 10,000,000.0 $ 90,000,000.0    
Interest rate               7.75%    
Interest Expense, Debt, Excluding Amortization 1,900,000 1,900,000 5,800,000 5,800,000            
Debt Issuance Costs, Gross               $ 3,600,000    
2027 Notes                    
Debt and Capital Lease Obligations [Line Items]                    
Debt Instrument, Face Amount                 $ 18,000,000.0 $ 120,000,000.0
Interest rate                   7.35%
Interest Expense, Debt, Excluding Amortization $ 2,500,000 $ 2,500,000 $ 7,600,000 $ 7,600,000            
Debt Issuance Costs, Gross                   $ 5,000,000.0