Summary of Our Options Activity (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Shares
Beginning Balance	1,825,320
Granted	928,000
Exercised	(117,030)
Forfeited or expired	(341,080)
Ending Balance	2,295,210
Number of Shares Exercisable, Ending Balance	609,090
Weighted Average Exercise Price
Beginning Balance	$ 1.88
Granted	$ 1.57
Exercised	$ 1.00
Forfeited or expired	$ 1.08
Ending Balance	$ 1.51
Weighted Average Exercise Price Exercisable, Ending Balance	$ 2.00
Weighted Average Remaining Contractual Term (Yrs)
Outstanding as of end of year	5 years
Exercisable as of end of year	2 years 7 months 6 days
Aggregate Intrinsic Value
Outstanding at December 31, 2013	$ 3,468,464
Exercisable at December 31, 2013	$ 621,573