Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended						9 Months Ended		18 Months Ended
	Sep. 28, 2018 USD ($) shares	Jun. 30, 2017 $ / shares Rate shares	Sep. 30, 2019 shares	Jun. 30, 2019 shares	Mar. 31, 2019 shares	Sep. 30, 2018 shares	Jun. 30, 2018 shares	Mar. 31, 2018 shares	Sep. 30, 2019 $ / shares Rate shares	Sep. 30, 2018	Dec. 31, 2018 shares
Class of Stock [Line Items]
Minimum percentage of outstanding common stock beneficially own by approved holders		10.00%
Debt instrument interest rate (as a percent)			11.25%						11.25%
Retirement of Class B Common Stock, shares (in shares)	2,500
Retirement of Class B Common Stock, value | $	$ 10
Senior Unsecured Notes
Class of Stock [Line Items]
Unsecured notes, maturity period									2 years	2 years
Debt instrument interest rate (as a percent)			9.00%						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 before June 15, 2020 | Rate		175.00%
Threshold percentage of conversion price after June 15, 2020 | Rate		150.00%
Preferred stock, dividend rate, percentage									20.00%
Payment-in-kind dividends (in shares)			2,159	2,112	2,065	1,975	1,932	1,889	6,336		11,784
Series A-1 Convertible Participating Preferred Stock | Battlecat and Marquis
Class of Stock [Line Items]
Number of shares issued (in shares)		5,400
Preferred stock, par value (in dollars per share) | $ / shares		$ 0.001
Series A-2 Convertible Participating Preferred Stock | Battlecat and Marquis
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share) | $ / shares		$ 0.001
Convertible participating preferred stock, number of shares issued (in shares)		74,600
Series B Convertible Participating Preferred Stock
Class of Stock [Line Items]
Preferred stock to common stock conversion basis									one-for-one
Series B Convertible Participating Preferred Stock | Battlecat Oil & Gas, LLC
Class of Stock [Line Items]
Number of shares issued in connection with acquisition (in shares)		1,184,632
Series B Convertible Participating Preferred Stock | SN Marquis LLC
Class of Stock [Line Items]
Number of shares issued in connection with acquisition (in shares)		1,500,000
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 (in dollars per share) | $ / shares									$ 975
Preferred stock, increase in dividend rate for next succeeding dividend period | Rate									5.00%
Preferred stock, additional increase in dividend rate for each successive dividend period | Rate									1.00%
Preferred stock redemption percentage									110.00%
Preferred stock redemption percentage									105.00%
Preferred stock redemption percentage									100.00%
Series A Preferred Stock | Maximum
Class of Stock [Line Items]
Preferred stock, dividend rate, percentage | Rate									20.00%
Class A Voting Common Stock
Class of Stock [Line Items]
Preferred stock, liquidation preference per share (in dollars per share) | $ / shares		$ 1,000
Convertible, conversion ratio									0.1666