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	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 | 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	1,626,906,000
Ending balance (Predecessor Company) at Jun. 03, 2018	(739,637)	$ 320	$ 0	$ 1	$ (229,310)	$ 1,626,906	(2,137,554)
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)
Cancellation of Predecessor Company stockholders' equity | Predecessor Company	649,620
Ending balance (in shares) (Successor Company) at Jun. 30, 2018		12,396,395	3,908,989	0	0	325,652,000
Ending balance (Successor Company) at Jun. 30, 2018	330,632	$ 0	$ 0	$ 0	$ 0	$ 325,652	4,980
Beginning balance (in shares) (Predecessor Company) at Mar. 31, 2018		32,031,054	0	80,609	2,806,187	1,626,594,000
Beginning balance (Predecessor Company) at Mar. 31, 2018	(700,950)	$ 320	$ 0	$ 1	$ (229,310)		(2,098,555)
Net loss | Predecessor Company	(38,999)						(38,999)
Net income | Predecessor Company	701,157
Other | Predecessor Company	108					$ 108
Stock-based compensation expense | Predecessor Company	204					$ 204
Ending balance (in shares) (Predecessor Company) at Jun. 03, 2018		32,031,054	0	80,609	2,806,187	1,626,906,000
Ending balance (Predecessor Company) at Jun. 03, 2018	(739,637)	$ 320	$ 0	$ 1	$ (229,310)	$ 1,626,906	(2,137,554)
Cancellation of Predecessor equity (in shares) | Predecessor Company		(32,031,054)		(80,609)	(2,806,187)	(1,626,906,000)
Cancellation of Predecessor Company stockholders' equity | Predecessor Company	(1,397,917)	$ (320)		$ (1)	$ 229,310	$ (1,626,906)	0
Elimination of accumulated deficit | Predecessor Company	2,137,554						2,137,554
Issuance of common stock (in shares) | Predecessor Company		11,052,211	5,218,209	0
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	0	0	325,000,000
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	1,626,906,000
Beginning balance (Predecessor Company) at Jun. 03, 2018	(739,637)	$ 320	$ 0	$ 1	$ (229,310)	$ 1,626,906	(2,137,554)
Net income | Successor Company	4,980						4,980
Stock-based compensation expense | Successor Company	652					$ 652
Conversion of Class B Common Stock (in shares) | Successor Company		1,344,184	(1,344,184)
Exercise of warrants | Successor Company			34,964
Ending balance (in shares) (Successor Company) at Jun. 30, 2018		12,396,395	3,908,989	0	0	325,652,000
Ending balance (Successor Company) at Jun. 30, 2018	330,632	$ 0	$ 0	$ 0	$ 0	$ 325,652	4,980
Beginning balance (in shares) (Successor Company) at Dec. 31, 2018		12,995,080	3,560,604		0
Beginning balance (Successor Company) at Dec. 31, 2018	389,829	$ 0	$ 0		$ 0	328,404	61,425
Net income | Successor Company	43,312						43,312
Stock-based compensation expense | Successor Company	2,314					2,314
Issuance of common stock (in shares) | Successor Company		118,827	3,035
Shares returned in lieu of tax payments (in shares) | Successor Company					67,833
Shares returned in lieu of tax payments | Successor Company	(1,156)				$ (1,156)
Conversion of Class B Common Stock (in shares) | Successor Company		866,786	(866,786)
Exercise of warrants | Successor Company		347,845
Ending balance (in shares) (Successor Company) at Jun. 30, 2019		14,328,538	2,696,853		67,833
Ending balance (Successor Company) at Jun. 30, 2019	434,299	$ 0	$ 0		$ (1,156)	330,718	104,737
Beginning balance (in shares) (Successor Company) at Mar. 31, 2019		13,992,145	2,812,006		34,704
Beginning balance (Successor Company) at Mar. 31, 2019	390,855	$ 0	$ 0		$ (633)	329,612	61,876
Net income | Successor Company	42,861						42,861
Stock-based compensation expense | Successor Company	1,106					1,106
Issuance of common stock (in shares) | Successor Company		50,581	0
Shares returned in lieu of tax payments (in shares) | Successor Company					33,129
Shares returned in lieu of tax payments | Successor Company	(523)				$ (523)
Conversion of Class B Common Stock (in shares) | Successor Company		115,153	(115,153)
Exercise of warrants | Successor Company		170,659
Ending balance (in shares) (Successor Company) at Jun. 30, 2019		14,328,538	2,696,853		67,833
Ending balance (Successor Company) at Jun. 30, 2019	$ 434,299	$ 0	$ 0		$ (1,156)	$ 330,718	$ 104,737