Mandatorily Redeemable Convertible Preferred Stock - Additional Information (Detail) (Preferred Stock Subject to Mandatory Redemption [Member], Predecessor [Member])	1 Months Ended
	Feb. 28, 2013
Preferred Stock Subject to Mandatory Redemption [Member] | Predecessor [Member]
Preferred Stock [Line Items]
Dividend of Series A Convertible Preferred Stock	3.25%
Cumulative convertible preferred stock, issued	125,000
Cumulative convertible preferred stock, outstanding	125,000