Debt Short-term and Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	May 19, 2016
Debt Instrument [Line Items]
Other Long-term Debt, Primarily Capital Leases	$ 2	$ 96
Plus: derivative liability for embedded conversion option	0	403	$ 11,574
Less: unamortized discount	(2,665)	(7,587)
Less: unamortized debt issuance costs	(3,501)	(5,199)
Less: current portion	105,861	137
Liabilities Subject to Compromise, Debt and Accrued Interest	199,342	0
Total long-term portion	0	286,459
Long-term Debt	305,203	286,596
Senior Secured Notes Due in 2018 [Member]
Debt Instrument [Line Items]
Senior Notes	177,019	177,019
Liabilities Subject to Compromise, Debt and Accrued Interest	177,019
Convertible Notes Due in 2017 [Member]
Debt Instrument [Line Items]
Convertible Notes Payable, Current	25
Convertible Debt		41
Senior Secured Term Loan Credit Facilities [Member]
Debt Instrument [Line Items]
Loans Payable	112,000	99,500
Convertible Notes Due in 2019 [Member]
Debt Instrument [Line Items]
Convertible Debt	22,323	$ 22,323
Liabilities Subject to Compromise, Debt and Accrued Interest	$ 22,323