Summary of Common Stock Award Activity (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Beginning Balance	0	800,000
Number of Shares, Granted	239,537	281,962
Number of Shares, Vested	(239,537)	(1,081,962)
Numberof Shares, Forfeited	0	0
Number of Shares, Ending Balance	0	0
Weighted Average Grant Date Fair Value, Beginning Balance	$ 0	$ 0.41
Weighted Average Grant Date Fair Value, Granted	$ 0.58	$ 0.73
Weighted Average Grant Date Fair Value, Vested	$ 0.58	$ 0.50
Weighted Average Grant Date Fair Value, Forfeited	$ 0	$ 0
Weighted Average Grant Date Fair Value, Ending Balance	$ 0	$ 0
Total Grant Date Fair Value, Beginning Balance	$ 0	$ 330,400
Total Grant Date Fair Value, Granted	138,055	206,815
Total Grant Date Fair Value, Vested	(138,055)	(537,215)
Total Grant Date Fair Value, Forfeited	0	0
Total Grant Date Fair Value, Ending Balance	$ 0	$ 0