Future Minimum Lease Payments and Present Value Of Payments (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Capital Leased Assets [Line Items]
2014	$ 4,000
2015	4,000
2016	4,000
2017	4,000
2018 and thereafter	3,000
Capital Leases Future Minimum Payments Due	19,000
Less: amounts representing interest	(3,000)
Present value	16,000
Less: current portion	(3,000)	0
Note payable Capital Lease - noncurrent portion	$ 13,000	$ 0