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 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]        
Stock options granted     193,000  
Stock-based compensation expense $ 132,561 $ 149,826 $ 392,473 $ 329,062
Total future stock compensation expense related to nonvested awards $ 1,401,000   $ 1,401,000