Notes Payable - Additional Information (Detail) (USD $)	9 Months Ended					1 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jan. 17, 2012	Sep. 30, 2013 Convertible Debt [Member]	Apr. 11, 2013 Convertible Debt [Member]	Feb. 10, 2012 MIT Promissory Notes	Sep. 30, 2013 MIT Promissory Notes
Secured Convertible Notes Payable [Line Items]
Note payable	$ 2,185,000		$ 700,000
Notes payable, refinanced with LANB principal and accrued interest						708,000	573,000
Convertible debenture, maturity date						Apr. 01, 2019
Monthly payment to LANB on promissory note							10,000
Interest rate on promissory note							5.50%
Interest paid	0	26,000					28,000,000
Convertible Debt	(2,911,000)				750,000
Notes Payable, Total				$ 1,435,000