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Long-Term Debt Long-Term Debt (Tables)
 3 Months Ended
Mar. 31, 2018
Debt Instrument [Line Items]  
Schedule of Long-term Debt Instruments [Table Text Block]
The following table summarizes our debt obligations as of the dates presented:
 
March 31, 2018
 
December 31, 2017
 
Principal
 
Unamortized Discount and Deferred Issuance Costs 1
 
Principal
 
Unamortized Discount and Deferred Issuance Costs 1
Credit facility 2
$
195,000

 
 
 
$
77,000

 
 
Second lien term loans
200,000

 
$
11,234

 
200,000

 
$
11,733

Totals
395,000

 
$
11,234

 
277,000

 
$
11,733

Less: Unamortized discount
(3,674
)
 
 
 
(3,839
)
 
 
Less: Unamortized deferred issuance costs
(7,560
)
 
 
 
(7,894
)
 
 
Long-term debt, net
$
383,766

 
 
 
$
265,267