Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Components of Long-Term Debt (Details)

v3.7.0.1
Long-Term Debt - Components of Long-Term Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Principal $ 873,733 $ 873,733
Adjustments to carrying value, Debt premium, discount, issuance costs, net of amortization (4,637) (5,276)
Adjustments to carrying value, Total 121,751 146,994
Adjustments to carrying value, Current maturities 11,147 8,272
Adjustments to carrying value, less current maturities 110,604 138,722
Debt premium, discount, issuance costs, net of amortization (4,637) (5,276)
Total long-term debt 995,484 1,020,727
Long-term debt 11,147 8,272
Long term debt, less current maturities 984,337 1,012,455
11.00% 1.5 Lien Term Loan, Due November 2019    
Debt Instrument [Line Items]    
Principal 75,000 75,000
Adjustments to carrying value, Future interest payments 19,709 23,823
Adjustments to carrying value, Subtotal 19,709 23,823
Carrying Value 94,709 98,823
9.00 % Second Lien Term Loan, Due May 2020    
Debt Instrument [Line Items]    
Principal 300,000 300,000
Carrying Value 300,000 300,000
8.50% Unsecured Senior Notes, Due June 2019    
Debt Instrument [Line Items]    
Principal 189,829 189,829
Carrying Value 189,829 189,829
9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020    
Debt Instrument [Line Items]    
Principal 163,007 163,007
Adjustments to carrying value, Future payments-in-kind 14,506 24,048
Adjustments to carrying value, Future interest payments 34,873 36,850
Adjustments to carrying value, Subtotal 49,379 60,898
Carrying Value 212,386 223,905
8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021    
Debt Instrument [Line Items]    
Principal 145,897 145,897
Adjustments to carrying value, Future payments-in-kind 18,618 26,844
Adjustments to carrying value, Future interest payments 38,682 40,705
Adjustments to carrying value, Subtotal 57,300 67,549
Carrying Value $ 203,197 $ 213,446