Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
Dec. 08, 2017	Dec. 31, 2019	Dec. 31, 2018
Level 2 \| Second Lien Notes \| Senior Notes
Debt Instrument [Line Items]
Fair value of Second Lien Notes		$ 98.5	$ 95.2
Series B Preferred Stock
Debt Instrument [Line Items]
Series B preferred stock, dividend rate	10.00%	10.00%	10.00%

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611

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