Stockholders' Equity - Additional Information (Details) - USD ($)			1 Months Ended	3 Months Ended			9 Months Ended	12 Months Ended
	Sep. 28, 2018	Nov. 03, 2017	Jun. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 22, 2016
Class of Stock [Line Items]
Minimum percentage of outstanding common stock beneficially own by approved holders			10.00%
Senior Unsecured Notes
Class of Stock [Line Items]
Unsecured notes, maturity period							2 years
Debt instrument interest rate							9.00%
Series A-1 Convertible Participating Preferred Stock
Class of Stock [Line Items]
Conversion of stock, threshold trading days			20 days
Conversion of stock, threshold consecutive trading days			30 days
Threshold percentage of conversion price prior to June 15, 2019			200.00%
Threshold percentage of conversion price after June 15, 2019 but before June 15, 2020			175.00%
Threshold percentage of conversion price after June 15, 2020			150.00%
Preferred stock, dividend rate, percentage							20.00%
Stock conversion terms								the Company, at its option, may instead elect to exchange each share of Series A-1 Preferred Stock for senior unsecured notes of the Company with a two-year maturity, a 9.0% per annum coupon payable semi-annually in cash, and governed by terms substantially similar to the Company’s most recent high yield indenture at that time.
Preferred Stock Dividends, Shares				7,816		1,991		7,816	1,991
Series A-1 Convertible Participating Preferred Stock | Battlecat and Marquis
Class of Stock [Line Items]
Number of shares issued			5,400
Preferred stock, par value			$ 0.001
Series A-2 Convertible Participating Preferred Stock
Class of Stock [Line Items]
Preferred Stock Dividends, Shares					1,977
Series A-2 Convertible Participating Preferred Stock | Battlecat and Marquis
Class of Stock [Line Items]
Preferred stock, par value			$ 0.001
Convertible participating preferred stock, number of shares issued			74,600
Series B Convertible Participating Preferred Stock
Class of Stock [Line Items]
Preferred stock to common stock conversion basis		one-for-one
Shares issued upon conversion		1
Series A Preferred Stock
Class of Stock [Line Items]
Minimum percentage of outstanding preferred stock beneficially own by approved holders			15.00%
Preferred stock, dividend rate, percentage							9.00%
Shares issued, price per share							$ 975
Preferred stock, increase in dividend rate for next succeeding dividend period							5.00%
Preferred stock, additional increase in dividend rate for each successive dividend period							1.00%
Preferred stock redemption percentage							110.00%
Preferred stock redemption percentage of stated value two							105.00%
Preferred stock redemption percentage of stated value three							100.00%
Series A Preferred Stock | Maximum
Class of Stock [Line Items]
Preferred stock, dividend rate, percentage							20.00%
Class A Voting Common Stock
Class of Stock [Line Items]
Number of shares issued		2,684,632
Preferred stock to common stock conversion basis							one-for-one
Shares issued upon conversion										1
Preferred stock, liquidation preference per share			$ 1,000
Class B Non-Voting Common Stock
Class of Stock [Line Items]
Stock repurchased and retired (in shares)	2,500
Stock Repurchased and Retired During Period, Value	$ 10,000