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Notes Payable and Long-Term Debt, 2018 Second Lien Credit Facility (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2019
USD ($)
Sep. 30, 2018
USD ($)
Notes Payable and Long-Term Debt [Abstract]          
Loss on extinguishment of debt $ (1,158)   $ 0 $ (1,308) $ (2,384)
2018 Second Lien Term Loan [Member]          
Notes Payable and Long-Term Debt [Abstract]          
Maturity date       Mar. 07, 2024  
Payment of term loan 35,500 $ 4,500      
Loss on extinguishment of debt $ (1,200) $ (200)      
2018 Second Lien Term Loan [Member] | Minimum [Member]          
Notes Payable and Long-Term Debt [Abstract]          
Senior leverage ratio 3.50     3.50  
Total leverage ratio 4.50     4.50  
Fixed charge coverage ratio 1.10     1.10  
2018 Second Lien Term Loan [Member] | Maximum [Member]          
Notes Payable and Long-Term Debt [Abstract]          
Senior leverage ratio 3.75     3.75  
Total leverage ratio 4.75     4.75  
2018 Second Lien Term Loan [Member] | LIBOR [Member]          
Notes Payable and Long-Term Debt [Abstract]          
Margin on variable rate       7.00%