Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended				12 Months Ended			1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended		1 Months Ended
	Sep. 28, 2012	Aug. 22, 2012	Aug. 07, 2012	Jul. 31, 2010 sqft	Jun. 30, 2013 sqft	Jun. 30, 2012	Aug. 07, 2012 Phase Three Clinical Trial	Jul. 31, 2010 Minimum	Jun. 30, 2013 Minimum	Jul. 31, 2010 Maximum	Jun. 30, 2013 Maximum	Aug. 07, 2012 Maximum	Jan. 03, 2013 First Lease Amendment sqft
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Lease arrangement rent area, square feet				3,700	6,200
Lease arrangement period				33 months
Lease rental rate								$ 10,109	$ 17,014	$ 10,734	$ 18,252
Lease expiration month and year													2015-06
Expansion space of lease arrangement rent area, square feet													2,500
Future minimum payment next year					188,000
Future minimum payment second year					213,000
Issuance of common stock to acquire intellectual property and technology rights		500,000	500,000
Issuance of common stock to purchase asset, shares		195,756
Future aggregate milestone payments												75,200,000
First milestone payment			200,000
Common stock value							$ 500,000
Percentage of Purchase Requirement	100.00%
License and supply agreement notice period	90 days