Net (Loss) Income Per Common Share - Computation of Basic and Diluted Net (Loss) Income Per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended	3 Months Ended		6 Months Ended	9 Months Ended		3 Months Ended
	Sep. 30, 2013	Sep. 30, 2013 Successor [Member]	Sep. 30, 2012 Successor [Member]	Sep. 30, 2012 Successor [Member]	Sep. 30, 2013 Successor [Member]	Dec. 31, 2012 Successor [Member]	Mar. 19, 2012 Predecessor [Member]
Numerator for basic and diluted net (loss) income per share:
Net (loss) income	$ 7,178	$ (878)	$ 5,299	$ (2,402)	$ (7,178)	$ (12,353)	$ (3,433)
Less: Net (loss) income allocated to participating securities		(4)			(36)
Net (loss) income attributable to common shareholders		$ (874)	$ 5,299	$ (2,402)	$ (7,142)		$ (3,433)
Denominator for basic and diluted net (loss) income per share:
Weighted average share outstanding		201,514,133	200,000,000	200,000,000	201,276,741		1,000
Weighted average unvested restricted shares outstanding		(1,128,769)			(1,000,070)
Denominator for basic and diluted net (loss) income per share:		200,385,364	200,000,000	200,000,000	200,276,671		1,000
Basic and diluted net (loss) income per share attributable to common shareholders		$ 0.00	$ 0.03	$ (0.01)	$ (0.04)		$ (3,433.00)