Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Class B Common Stock	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) at Dec. 31, 2017			32,031,054		80,609	2,806,187
Beginning balance at Dec. 31, 2017	$ (696,115)		$ 320		$ 1	$ (229,310)	$ 1,626,428	$ (2,093,554)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(44,000)							(44,000)
Other	247						247
Stock based compensation expense	231						231
Net income	696,156
Cancellation of Predecessor equity	649,620
Ending balance (in shares) at Jun. 03, 2018			32,031,054		80,609	2,806,187
Ending balance at Jun. 03, 2018	(739,637)		$ 320		$ 1	$ (229,310)	1,626,906	(2,137,554)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cancellation of Predecessor equity (in shares)			(32,031,054)		(80,609)	(2,806,187)
Cancellation of Predecessor equity	(1,397,917)		$ (320)		$ (1)	$ 229,310	(1,626,906)
Elimination of accumulated deficit	2,137,554							2,137,554
Issuance of Successor common stock (in shares)			11,052,211	5,218,209
Issuance of Successor common stock	264,394						264,394
Issuance of Successor warrants	60,606						60,606
Ending balance (in shares) at Jun. 04, 2018			11,052,211	5,218,209.000	0	0
Ending balance at Jun. 04, 2018	325,000		$ 0	$ 0	$ 0	$ 0	325,000	0
Beginning balance (in shares) at Jun. 03, 2018			32,031,054		80,609	2,806,187
Beginning balance at Jun. 03, 2018	(739,637)		$ 320		$ 1	$ (229,310)	1,626,906	(2,137,554)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation expense	3,404						3,404
Net income	61,425							61,425
Issuance of Successor common stock (in shares)			28,363
Conversion of Class B common stock (in shares)		1,692,849	1,692,849	(1,692,849)
Exercise of warrants (in shares)			221,657	35,244
Ending balance (in shares) at Dec. 31, 2018			12,995,080	3,560,604	0	0
Ending balance at Dec. 31, 2018	389,829		$ 0	$ 0	$ 0	$ 0	328,404	61,425
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation expense	5,301						5,301
Net income	61,257							61,257
Issuance of Successor common stock (in shares)			148,839	3,035
Shares returned in lieu of tax payments (in shares)						68,658
Shares returned in lieu of tax payments	(1,171)					$ (1,171)
Conversion of Class B common stock (in shares)			1,636,791	(1,636,791)
Exercise of warrants (in shares)			900,729
Ending balance (in shares) at Dec. 31, 2019			15,681,439	1,926,848	0	68,658
Ending balance at Dec. 31, 2019	$ 455,216		$ 0	$ 0	$ 0	$ (1,171)	$ 333,705	$ 122,682