CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ (DEFICIT) EQUITY Statement - USD ($) $ in Thousands	Total	Common Stock Class A common stock	Common Stock Class B common stock	Common Stock Class C common stock	Treasury Stock	Additional Paid-In Capital	(Accumulated Deficit) Retained Earnings
Beginning balance (in shares) (Predecessor Company) at Dec. 31, 2017		32,031,054	0	80,609	2,806,187
Beginning balance (Predecessor Company) at Dec. 31, 2017	$ (696,115)	$ 320	$ 0	$ 1	$ (229,310)	$ 1,626,428	$ (2,093,554)
Net loss | Predecessor Company	(44,000)						(44,000)
Net income (loss) | Predecessor Company	696,156
Other | Predecessor Company	247					247
Stock-based compensation expense | Predecessor Company	231					231
Ending balance (in shares) (Predecessor Company) at Jun. 03, 2018		32,031,054	0	80,609	2,806,187
Ending balance (Predecessor Company) at Jun. 03, 2018	(739,637)	$ 320	$ 0	$ 1	$ (229,310)	1,626,906	(2,137,554)
Cancellation of Predecessor Common Stock (in shares) | Predecessor Company		(32,031,054)		(80,609)	(2,806,187)
Cancellation of Predecessor common stock | Predecessor Company	(1,397,917)	$ (320)		$ (1)	$ 229,310	(1,626,906)
Elimination of accumulated deficit | Predecessor Company	2,137,554						2,137,554
Issuance of Successor Company Common Stock (shares) | Predecessor Company		11,052,211	5,218,209
Issuance of Successor common stock | Predecessor Company	264,394					264,394
Issuance of Successor warrants | Predecessor Company	60,606					60,606
Ending balance (in shares) (Successor Company) at Jun. 04, 2018		11,052,211	5,218,209.000	0	0
Ending balance (Successor Company) at Jun. 04, 2018	325,000	$ 0	$ 0	$ 0	$ 0	325,000	0
Beginning balance (in shares) (Predecessor Company) at Jun. 03, 2018		32,031,054	0	80,609	2,806,187
Beginning balance (Predecessor Company) at Jun. 03, 2018	(739,637)	$ 320	$ 0	$ 1	$ (229,310)	1,626,906	(2,137,554)
Net income (loss) | Successor Company	17,693						17,693
Stock-based compensation expense | Successor Company	1,783					1,783
Conversion of Class B Common Stock (in shares) | Successor Company		1,658,463	(1,658,463)
Exercise of warrants | Successor Company		163,023	34,964
Ending balance (in shares) (Successor Company) at Sep. 30, 2018		12,873,697	3,594,710	0	0
Ending balance (Successor Company) at Sep. 30, 2018	$ 344,476	$ 0	$ 0	$ 0	$ 0	$ 326,783	$ 17,693