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	6 Months Ended	3 Months Ended			6 Months Ended	9 Months Ended	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2013 Successor [Member]	Jun. 30, 2012 Successor [Member]	Jun. 30, 2012 Successor [Member]	Jun. 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	$ (6,300)	$ (2,484)	$ (8,173)	$ (7,701)	$ (6,300)	$ (12,353)	$ (3,433)
Less: Net (loss) income allocated to participating securities		(10)			(29)
Net (loss) income attributable to common shareholders		$ (2,474)	$ (8,173)	$ (7,701)	$ (6,271)		$ (3,433)
Denominator for basic and diluted net (loss) income per share:
Weighted average share outstanding		201,156,078	200,000,000	200,000,000	201,156,078		1,000
Weighted average unvested restricted shares outstanding		(770,714)			(934,653)
Denominator for basic and diluted net (loss) income per share:		200,385,364	200,000,000	200,000,000	200,221,425		1,000
Basic and diluted net (loss) income per share attributable to common shareholders		$ (0.01)	$ (0.04)	$ (0.04)	$ (0.03)		$ (3,433.00)