Reorganization Schedule of Reorganization Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Reorganization Items [Line Items]
Reorganization items, net	$ (3,581)	$ 667
Adjustments to deferred debt issuance costs and senior debt premium
Reorganization Items [Line Items]
Reorganization items, net	0	2,399
Professional fees
Reorganization Items [Line Items]
Reorganization items, net	(3,460)	(1,252)
Adjustments to other liabilities for claims made or rejected contracts
Reorganization Items [Line Items]
Reorganization items, net	(87)	(449)
Other
Reorganization Items [Line Items]
Reorganization items, net	$ (34)	$ (31)