Related Party Transactions - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		1 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	May 07, 2013 Pillar Three Entities [Member]	Sep. 30, 2013 Pillar Four Entities [Member]
Related Party Transaction Due From To Related Party [Line Items]
Number of shares of common stock sold in financing					5,000,000	1,774,193
Warrant to purchase common stock					5,000,000
Exercise price of warrants					0.47
Aggregate purchase price					$ 2,500,000	$ 2,750,000
Common stock in lieu of board fees			31,117	1,216
Common stock issued			18,000	1,000
Directors consulting fees	$ 0	$ 0	$ 0	$ 1,000