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Financing and Other Debt - Schedule of Total Interest Expense for Convertible Note (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Jul. 01, 2020
Debt Instrument [Line Items]          
Operating interest     $ 1,400    
Convertible Debt | Convertible Senior Notes Due 2027          
Debt Instrument [Line Items]          
Interest on 6.5 percent coupon $ 5,038 $ 4,982 15,113 $ 4,982  
Amortization of debt discount and debt issuance costs 512 1,674 1,566 1,674  
Operating interest $ 5,550 $ 6,656 $ 16,679 $ 6,656  
Interest rate, stated percentage 0.065%   0.065%   6.50%