Quarterly report pursuant to Section 13 or 15(d)

Stock Options - Additional Information (Detail)

v2.4.0.8
Stock Options - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]        
Stock options granted 65,500   231,500  
Stock-based compensation expense $ 142,200 $ 171,017 $ 534,673 $ 478,701
Total future stock compensation expense related to nonvested awards $ 1,354,000   $ 1,354,000