Property and Equipment - Additional Information (Detail) (USD $)	6 Months Ended		12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2011
Property, Plant and Equipment [Abstract]
Depreciation	$ 2,000,000	$ 500,000	$ 22,592,000	$ 13,500,000	$ 1,500,000