Subsequent Events - CVP Notes Exchanges (Details) - Chicago Venture Partners, L.P. - Subsequent event $ in Millions	3 Months Ended
Mar. 31, 2019 USD ($) shares
Subsequent Events.
Stock issued for reduction of debt \| shares	18,764,637
Reduction of debt \| $	$ 4.4

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585

Name:	us-gaap_RepaymentsOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration