6. Warrant Activity (Detail) (Warrant Share [Member], USD $)	6 Months Ended
	Jun. 30, 2014
Warrant Share [Member]
Number of Shares
Number of Shares, Outstanding at beginning of period	3,069,113
Number of Shares, Granted	0
Number of Shares, Exercised	0
Number of Shares, Forfeited and canceled	0
Number of Shares, Outstanding at end of period	3,069,113
Number of Shares, Exercisable at end of period	3,069,113
Weighted average exercise price
Weighted average exercise price, Outstanding at beginning of period	$ 4.12
Weighted average exercise price, Granted	$ 0
Weighted average exercise price, Exercised	$ 0
Weighted average exercise price, Forfeited and canceled	$ 0
Weighted average exercise price, Outstanding at end of period	$ 4.12
Weighted average exercise price, Exercisable at end of period	$ 4.12
Weighted average remaining contract term
Weighted average remaining contract term, Outstanding at end of period	2 years 8 months 12 days
Weighted average remaining contract term, Exercisable at end of period	2 years 8 months 12 days
Intrinsic Value
Intrinsic Value, Outstanding at end of period	$ 186,750
Intrinsic Value, Exercisable at end of the period	$ 186,750