Employee Benefit Plans - Narrative (Details)	9 Months Ended
Sep. 30, 2017 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Anticipated cash contributions to pension plan in remaining fiscal year	$ 0
Revaluation of Liabilities \| Pension and Other Postretirement Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Pension and postretirement benefit obligations	$ 4,274,000

Amount of fresh-start adjustment to pension obligations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766

Name:	us-gaap_FreshStartAdjustmentIncreaseDecreasePensionObligations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant