Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) | Predecessor [Member]	55,333
Balance (in shares) (Predecessor [Member]) at Dec. 31, 2014	55,333
Balance (Predecessor [Member]) at Dec. 31, 2014	$ 553	$ 271,104	$ (45)	$ 510,240	$ 781,852
Issuance of common shares, net of issuance costs (in shares) | Predecessor [Member]	62,542
Issuance of common shares, net of issuance costs | Predecessor [Member]	$ 625	709,642			710,267
Issuance of restricted shares, net of forfeitures (in shares) | Predecessor [Member]	2,613
Issuance of restricted shares, net of forfeitures | Predecessor [Member]	$ 26	3,006			3,032
Employee tax withholding on restricted shares vesting (in shares) | Predecessor [Member]	(222)
Employee tax withholding on restricted shares vesting | Predecessor [Member]	$ (2)	(2,619)			$ (2,621)
Issuance of common shares for stock options exercised (in shares) | Predecessor [Member]	154				154
Issuance of common shares for stock options exercised | Predecessor [Member]	$ 2	451			$ 453
Tax effect of share-based compensation | Predecessor [Member]		(2,367)			(2,367)
Share-based compensation | Predecessor [Member]		18,549			18,549
Net income | Predecessor [Member]				(872,542)	(872,542)
Foreign currency translation gain (loss), net of tax | Predecessor [Member]			(3,980)		(3,980)
Employee tax withholding on restricted shares vesting (in shares) | Predecessor [Member]	(222)
Balance (in shares) | Predecessor [Member]	55,333
Balance (Predecessor [Member]) at Dec. 31, 2015	$ 1,204	997,766	(4,025)	(362,302)	632,643
Balance (in shares) | Predecessor [Member]	120,420
Balance (in shares) (Predecessor [Member]) at Dec. 31, 2015	120,420
Employee tax withholding on restricted shares vesting (in shares) | Predecessor [Member]	(314)
Employee tax withholding on restricted shares vesting | Predecessor [Member]	$ (3)	(494)			(497)
Tax effect of share-based compensation | Predecessor [Member]		(5,592)			(5,592)
Share-based compensation | Predecessor [Member]		17,740			17,740
Net income | Predecessor [Member]				(944,289)	(944,289)
Foreign currency translation gain (loss), net of tax | Predecessor [Member]			1,425		1,425
Forfeitures of restricted shares (in shares) | Predecessor [Member]	(576)
Forfeitures of restricted shares | Predecessor [Member]	$ (6)	6
Employee tax withholding on restricted shares vesting (in shares) | Predecessor [Member]	(314)
Balance (in shares) | Predecessor [Member]	120,420
Balance (Predecessor [Member]) at Dec. 31, 2016	$ 1,195	1,009,426	(2,600)	(1,306,591)	(298,570)
Balance (in shares) (Predecessor [Member]) at Dec. 31, 2016	119,530
Net income | Predecessor [Member]					298,582
Foreign currency translation gain (loss), net of tax | Predecessor [Member]
Cancellation of Predecessor equity (in shares) | Predecessor [Member]	(119,530)
Cancellation of Predecessor equity | Predecessor [Member]	$ (1,195)	(1,009,426)	2,600	1,306,591	298,570
Issuance of New Equity and New Warrants (in shares) | Predecessor [Member]	40,000
Issuance of New Equity and New Warrants | Predecessor [Member]	$ 400	725,464			725,864
Rights Offering (in shares) | Predecessor [Member]	15,464
Rights Offering | Predecessor [Member]	$ 155	199,845			200,000
Balance (in shares) | Predecessor [Member]	119,530
Balance at Jan. 01, 2017	$ 555	925,309			925,864
Balance (in shares) | Predecessor [Member]	119,530
Balance (in shares) (Predecessor [Member]) at Dec. 31, 2016	119,530
Balance (Predecessor [Member]) at Dec. 31, 2016	$ 1,195	1,009,426	(2,600)	(1,306,591)	$ (298,570)
Issuance of common shares for stock options exercised (in shares)
Net income					$ 22,457
Foreign currency translation gain (loss), net of tax					(580)
Balance (in shares) | Predecessor [Member]	119,530
Balance at Dec. 31, 2017	$ 686	1,298,859	(580)	22,457	1,321,422
Balance (in shares)	55,464
Balance (in shares) at Jan. 01, 2017	55,464
Balance at Jan. 01, 2017	$ 555	925,309			925,864
Issuance of common shares, net of issuance costs (in shares)	7,050
Issuance of common shares, net of issuance costs	$ 71	215,849			215,920
Issuance of restricted shares, net of forfeitures (in shares)	1,718
Issuance of restricted shares, net of forfeitures	$ 17	(17)
Employee tax withholding on restricted shares vesting (in shares)	(107)
Employee tax withholding on restricted shares vesting	$ (1)	(3,841)			(3,842)
Share-based compensation		23,437			23,437
Net income				22,457	22,457
Foreign currency translation gain (loss), net of tax			(580)		(580)
Employee tax withholding on restricted shares vesting (in shares)	(107)
Issuance of stock for business acquisition (in shares)	4,420
Issuance of stock for business acquisition	$ 44	138,122			138,166
Exercise of warrants (in shares)	2
Balance (in shares)	55,464
Balance at Dec. 31, 2017	$ 686	$ 1,298,859	$ (580)	$ 22,457	$ 1,321,422
Balance (in shares)	68,547