CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Retained Earnings (Accumulated Deficit)	Total
Balances at Dec. 31, 2018	$ 16	$ 1,095,367	$ 101,661	$ 1,197,044
Balances (in shares) at Dec. 31, 2018	160,613
Increase (Decrease) in Stockholders' Equity
Net income (loss)			(336,559)	(336,559)
Long-term incentive plan grants (in shares)	4,153
Long-term incentive plan forfeitures (in shares)	(193)
Reduction in shares to cover individuals' tax withholding		(406)		(406)
Reduction in shares to cover individuals' tax withholding (in shares)	(253)
Stock-based compensation		(6,416)		(6,416)
Balances at Mar. 31, 2019	$ 16	1,088,545	(234,898)	$ 853,663
Balances (in shares) at Mar. 31, 2019	164,320
Increase (Decrease) in Stockholders' Equity
Financial Designation, Predecessor and Successor [Fixed List]				Predecessor
Balances at Dec. 31, 2018	$ 16	1,095,367	101,661	$ 1,197,044
Balances (in shares) at Dec. 31, 2018	160,613
Increase (Decrease) in Stockholders' Equity
Net income (loss)				(977,403)
Balances at Jun. 30, 2019	$ 16	1,089,883	(875,742)	$ 214,157
Balances (in shares) at Jun. 30, 2019	164,123
Increase (Decrease) in Stockholders' Equity
Financial Designation, Predecessor and Successor [Fixed List]				Successor
Balances at Dec. 31, 2018	$ 16	1,095,367	101,661	$ 1,197,044
Balances (in shares) at Dec. 31, 2018	160,613
Balances at Dec. 31, 2019	$ 2	327,108	(10,460)	$ 316,650
Balances (in shares) at Dec. 31, 2019	16,204
Increase (Decrease) in Stockholders' Equity
Financial Designation, Predecessor and Successor [Fixed List]				Predecessor
Balances at Mar. 31, 2019	$ 16	1,088,545	(234,898)	$ 853,663
Balances (in shares) at Mar. 31, 2019	164,320
Increase (Decrease) in Stockholders' Equity
Net income (loss)			(640,844)	(640,844)
Long-term incentive plan grants (in shares)	11
Long-term incentive plan forfeitures (in shares)	(166)
Reduction in shares to cover individuals' tax withholding		(20)		(20)
Reduction in shares to cover individuals' tax withholding (in shares)	(42)
Stock-based compensation		1,358		1,358
Balances at Jun. 30, 2019	$ 16	$ 1,089,883	(875,742)	214,157
Balances (in shares) at Jun. 30, 2019	164,123
Increase (Decrease) in Stockholders' Equity
Net income (loss)			(63,284)	$ (63,284)
Long-term incentive plan forfeitures (in shares)	(1,742)
Reduction in shares to cover individuals' tax withholding (in shares)	(164)	(14,000)		(14,000)
Stock-based compensation		$ (2,428)		$ (2,428)
Balances at Sep. 30, 2019	$ 16	1,087,441	(939,026)	148,431
Balances (in shares) at Sep. 30, 2019	162,217
Increase (Decrease) in Stockholders' Equity
Net income (loss)			(115,366)	(115,366)
Equity issuance costs		(2,503)		(2,503)
Reduction in shares to cover individuals' tax withholding		(54)		(54)
Reduction in shares to cover individuals' tax withholding (in shares)	(715)
Stock-based compensation		(2,534)		(2,534)
Cancellation of Predecessor equity	$ (16)	(1,084,853)	1,054,392	(30,477)
Cancellation of Predecessor equity (in shares)	(161,502)
Issuance of Successor common stock	$ 2	322,294		322,296
Issuance of Successor common stock (in shares)	16,204
Issuance of Successor warrants		7,336		7,336
Balances at Oct. 01, 2019	$ 16	1,084,853	(1,054,392)	30,477
Balances (in shares) at Oct. 01, 2019	161,502
Increase (Decrease) in Stockholders' Equity
Equity issuance costs				(2,503)
Balances at Oct. 02, 2019	$ 2	327,127		327,129
Balances (in shares) at Oct. 02, 2019	16,204
Balances at Oct. 01, 2019	$ 16	1,084,853	(1,054,392)	30,477
Balances (in shares) at Oct. 01, 2019	161,502
Increase (Decrease) in Stockholders' Equity
Net income (loss)			(10,460)	(10,460)
Equity issuance costs		(19)		(19)
Balances at Dec. 31, 2019	$ 2	327,108	(10,460)	316,650
Balances (in shares) at Dec. 31, 2019	16,204
Increase (Decrease) in Stockholders' Equity
Net income (loss)			114,491	114,491
Equity issuance costs		(13)		(13)
Stock-based compensation		449		449
Balances at Mar. 31, 2020	$ 2	327,544	104,031	$ 431,577
Balances (in shares) at Mar. 31, 2020	16,204
Increase (Decrease) in Stockholders' Equity
Financial Designation, Predecessor and Successor [Fixed List]				Successor
Balances at Dec. 31, 2019	$ 2	327,108	(10,460)	$ 316,650
Balances (in shares) at Dec. 31, 2019	16,204
Increase (Decrease) in Stockholders' Equity
Net income (loss)				(12,825)
Balances at Jun. 30, 2020	$ 2	328,454	(23,285)	$ 305,171
Balances (in shares) at Jun. 30, 2020	16,204
Increase (Decrease) in Stockholders' Equity
Financial Designation, Predecessor and Successor [Fixed List]				Successor
Balances at Mar. 31, 2020	$ 2	327,544	104,031	$ 431,577
Balances (in shares) at Mar. 31, 2020	16,204
Increase (Decrease) in Stockholders' Equity
Net income (loss)			(127,316)	(127,316)
Stock-based compensation		910		910
Balances at Jun. 30, 2020	$ 2	$ 328,454	$ (23,285)	$ 305,171
Balances (in shares) at Jun. 30, 2020	16,204

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Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.

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Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

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