Commitments and Contingencies - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013 sqft
Commitments And Contingencies Disclosure [Abstract]
Lease expiration date	Jun. 30, 2014
Monthly base rent payment starting date	Jul. 01, 2013
Monthly base rent payment ending date	Jun. 30, 2014
Adjusted base monthly rent under facility lease	$ 16,616.25
Area of facility lease	5,275