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Net Income Per Share - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended		15 Months Ended
	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Nov. 02, 2016	Dec. 31, 2015	Jun. 30, 2015	Apr. 30, 2013
Schedule Of Earnings Per Share [Line Items]
Number of new common stock issued		45,121,788		45,121,788		45,044,222
Warrants Repurchased Average Cost per Warrant				$ 8.10
Par value of common stock issued		$ 0.01		$ 0.01		$ 0.01		$ 0.01
Class of Warrant or Right, Number of Securities Called by Warrants or Rights								5,047,138
Exercise price of common stock								$ 16.67
Investment Warrants Expiration Date		Apr. 30, 2023
Common stock shares issued		136	236
Warrant exercised		136	740
RemainingWarrantBuyBackAuthorizedDollars		$ 12,550		$ 12,550
Successor [Member]
Schedule Of Earnings Per Share [Line Items]
Number of new common stock issued								45,000,000
WarrantBuyBackAuthorizedDollars							$ 10,000
Warrants Purchased During Period Shares		291,082		922,682
Warrants Purchased During Period Dollars		$ 2,104	$ 5,017	$ 7,478
Class of Warrant or Right, Number of Securities Called by Warrants or Rights								5,047,138
Warrants outstanding		4,116,319		4,116,319
SecondWarrantBuyBackAuthorizedDollars					$ 10,000
Employee Stock Option [Member] | Successor [Member]
Schedule Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	176,668	143,334	110,000
Warrants [Member] | Successor [Member]
Schedule Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	4,461,637
Restricted Stock Units (RSUs) [Member] | Successor [Member]
Schedule Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	78,460	23,334
Performance Shares [Member] | Successor [Member]
Schedule Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	96,349

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