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Accrued Liabilities - Schedule of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Payables and Accruals [Abstract]    
Accrued interest payable $ 10,835
Wages/commissions payable 3,332 2,831
Accrued stock compensation 120
Other accrued liabilities 1,818 2,059
Accrued Liabilities $ 5,150 $ 15,845