Stockholders' (Deficit) Equity - Restricted Stock Grants (Details) - Restricted Stock - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
Dec. 04, 2017	Mar. 08, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares	480,200	26,000	506,200	1,711,000	507,000
Share Price (in dollars per share)	$ 5.85	$ 4
Grant Date Fair Value	$ 2,809	$ 104	$ 2,913	$ 4,245	$ 2,166

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration