Bankruptcy Related Disclosures - Fresh Start Adjustments, Narrative (Details) - USD ($)	Dec. 31, 2017	Aug. 31, 2017
Fresh-Start Adjustment [Line Items]
Intangible assets, net	$ 5,500,000	$ 24,000
Goodwill recognized in fresh start accounting		2,675,000
Elimination of Deferred Rent
Fresh-Start Adjustment [Line Items]
Other noncurrent liabilities		2,105,000
Liability for Unfavorable Contracts
Fresh-Start Adjustment [Line Items]
Other noncurrent liabilities		390,000
Customer relationships
Fresh-Start Adjustment [Line Items]
Intangible assets	0
Trade name
Fresh-Start Adjustment [Line Items]
Intangible assets, net		$ (8,151,000)
Intangible assets not subject to amortization	$ 5,500,000