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Share Based Compensation - Share-based Compensation Expense (Details) - Successor - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	$ 6,581	$ 24,276	$ 17,912
Performance units	1,265	4,774	2,574
Total share and incentive-based compensation expense	7,846	29,050	20,486
Less: Capitalized compensation expense	(407)	(1,037)	(2,521)
Share and incentive-based compensation expense, net	7,439	28,013	17,965
Recurring Compensation Expense
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	2,296	5,354	16,087
Performance units	528	756	2,574
Total share and incentive-based compensation expense	2,824	6,110	18,661
Less: Capitalized compensation expense	(407)	(482)	(2,521)
Share and incentive-based compensation expense, net	2,417	5,628	16,140
Executive Terminations
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	0	9,196	1,825
Performance units	0	2,151	0
Total share and incentive-based compensation expense	0	11,347	1,825
Less: Capitalized compensation expense	0	0	0
Share and incentive-based compensation expense, net	0	11,347	1,825
Reduction in Force
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	4,285	3,935	0
Performance units	737	558	0
Total share and incentive-based compensation expense	5,022	4,493	0
Less: Capitalized compensation expense	0	0	0
Share and incentive-based compensation expense, net	5,022	4,493	0
Accelerated Vesting
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	0	5,791	0
Performance units	0	1,309	0
Total share and incentive-based compensation expense	0	7,100	0
Less: Capitalized compensation expense	0	(555)	0
Share and incentive-based compensation expense, net	0	6,545	0
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	6,581	21,833	16,556
Restricted Stock | Recurring Compensation Expense
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	2,296	4,735	14,731
Restricted Stock | Executive Terminations
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	0	8,140	1,825
Restricted Stock | Reduction in Force
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	4,285	3,777	0
Restricted Stock | Accelerated Vesting
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	$ 0	5,181	0
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense		2,443	1,356
Performance Shares | Recurring Compensation Expense
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense		619	1,356
Performance Shares | Executive Terminations
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense		1,056	0
Performance Shares | Reduction in Force
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense		158	0
Performance Shares | Accelerated Vesting
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense		$ 610	$ 0

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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