Summary of Significant Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share For Out of Money Potential Common Shares (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Stock Options With an Exercise Price Of $2.73 per share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	649,469		649,469
Stock Options With an Exercise Price Of $2.74 per share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	633,835		633,835
Stock Options With an Exercise Price Of $2.89 per share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	987,155		987,155
Stock Options With an Exercise Price of $3.25 Per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	100,000		100,000
Stock Options With an Exercise Price of $3.40 Per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	100,000	100,000	100,000	100,000
Stock Options With an Exercise Price of $3.43 Per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	40,000	40,000	40,000	40,000
Stock Options With an Exercise Price of $3.50 Per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	100,000	345,000	100,000	345,000
Stock Options With an Exercise Price of $3.51 Per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded		959,500		959,500
Stock Options With an Exercise Price of $3.53 Per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded		191,700		191,700
Stock Options With an Exercise Price of $3.90 Per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	20,000	20,000	20,000	20,000
Stock Options With an Exercise Price of $4.00 Per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded		52,500		52,500
Stock Options With an Exercise Price of 5.00 Per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded		100,000		100,000
Stock Options With an Exercise Price of $7.00 Per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded		100,000		100,000
Warrants With an Exercise Price of $3.60 Per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	1,562,500	1,562,500	1,562,500	1,562,500
Options and Warrants Excluded from Diluted EPS [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	4,192,959	3,471,200	4,192,959	3,471,200