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Notes Payable, Long-Term Debt and Other Obligations (Senior Notes) (Details) - USD ($)
$ in Thousands
1 Months Ended
Nov. 02, 2018
Jan. 31, 2019
Jun. 30, 2019
Senior Notes | 10.5% Senior Notes due 2026      
Debt Instrument [Line Items]      
Interest rate     10.50%
Period of redemption after closing 90 days    
Variable Interest Senior Convertible Debt | 7.5% Variable Interest Senior Convertible Notes due 2019      
Debt Instrument [Line Items]      
Face amount of debt   $ 230,000  
Interest Expense, Debt   $ 8,102  
Interest rate     7.50%