Consolidated statements of stockholders' equity (deficit) - USD ($) $ in Thousands	Total		Common Stock	Additional Paid in Capital	Accumulated Deficit
Stockholders' equity, balance at beginning of the period (Predecessor) at Dec. 31, 2014	$ 711,858		$ 14	$ 429,678	$ 282,166
Balance at beginning of period (in shares) (Predecessor) at Dec. 31, 2014	1,423,916		1,423,916
Restricted stock issuances | Predecessor	1,209		1,209
Restricted stock forfeited | Predecessor	(15,091)		(15,091)
Restricted stock repurchased | Predecessor			(5,725)
Stock-based compensation | Predecessor	$ 1,629			1,629
Net income (loss) | Predecessor	(1,333,844)				(1,333,844)
Stockholders' equity, balance at end of the period (Predecessor) at Dec. 31, 2015	$ (620,357)		$ 14	431,307	(1,051,678)
Balance at end of period (in shares) (Predecessor) at Dec. 31, 2015	1,404,309		1,404,309
Restricted stock forfeited | Predecessor	(9,006)		(9,006)
Restricted stock repurchased | Predecessor			(2,597)
Stock-based compensation | Predecessor	$ (6,076)			(6,076)
Net income (loss) | Predecessor	(415,720)				(415,720)
Stockholders' equity, balance at end of the period (Predecessor) at Dec. 31, 2016	$ (1,042,153)		$ 14	425,231	(1,467,398)
Balance at end of period (in shares) (Predecessor) at Dec. 31, 2016	1,392,706		1,392,706
Restricted stock forfeited | Predecessor	(1,454)		(1,454)
Restricted stock cancelled | Predecessor	(8,964)		(8,964)
Stock-based compensation | Predecessor	$ 194			194
Net income (loss) | Predecessor	1,041,959	[1],[2]			1,041,959
Stockholders' equity, balance at end of the period (Predecessor) at Mar. 21, 2017	(1,012,089)		$ 14	425,425	(425,439)
Stockholders' equity, balance at end of the period at Mar. 21, 2017	$ 949,063		$ 450	948,613
Balance at end of period (in shares) (Predecessor) at Mar. 21, 2017	1,382,288		1,382,288
Balance at end of period (in shares) at Mar. 21, 2017	44,982,142		44,982,142
Stockholders' equity, balance at beginning of the period (Predecessor) at Dec. 31, 2016	$ (1,042,153)		$ 14	425,231	(1,467,398)
Balance at beginning of period (in shares) (Predecessor) at Dec. 31, 2016	1,392,706		1,392,706
Stockholders' equity, balance at end of the period at Dec. 31, 2017	$ 842,766		$ 468	961,200	(118,902)
Balance at end of period (in shares) at Dec. 31, 2017	46,827,762		46,827,762
Cancellation of equity | Predecessor			$ (14)	(425,425)	425,439
Cancellation of equity (in shares) | Predecessor	(1,382,288)		(1,382,288)
Issuance of Successor common stock - rights offering	$ 50,027		$ 42	49,985
Issuance of Successor common stock - rights offering (in shares)	4,197,210		4,197,210
Issuance of Successor common stock - backstop premium	$ 4		$ 4
Issuance of Successor common stock - backstop premium (in shares)	367,030		367,030
Issuance of Successor common stock - settlement of claims	$ 898,914		$ 404	898,510
Issuance of Successor common stock - settlement of claims (in shares)	40,417,902		40,417,902
Issuance of Successor warrants	$ 118			118
Stockholders' equity, balance at beginning of the period (Predecessor) at Mar. 21, 2017	(1,012,089)		$ 14	425,425	(425,439)
Stockholders' equity, balance at beginning of the period at Mar. 21, 2017	$ 949,063		$ 450	948,613
Balance at beginning of period (in shares) (Predecessor) at Mar. 21, 2017	1,382,288		1,382,288
Balance at beginning of period (in shares) at Mar. 21, 2017	44,982,142		44,982,142
Restricted stock cancelled	(7,616)		(7,616)
Stock-based compensation	$ 12,605		$ 18	12,587
Stock-based compensation (in shares)	1,853,236		1,853,236
Net income (loss)	$ (118,902)				(118,902)
Stockholders' equity, balance at end of the period at Dec. 31, 2017	$ 842,766		$ 468	$ 961,200	$ (118,902)
Balance at end of period (in shares) at Dec. 31, 2017	46,827,762		46,827,762

[1] Includes a loss from the sale of our EOR assets of $25,163 for the fourth quarter. See “Note 6—Acquisitions and divestitures” for additional information.

[2] Includes reorganization items income (expense) related to the Company’s restructuring under Chapter 11 filings of $988,727, $(620), $(1,070), $(858), and $(543) for the Predecessor first quarter, Successor first, second, third, and fourth quarters, respectively. See “Note 4—Fresh start accounting” for additional information.