Quarterly report pursuant to Section 13 or 15(d)

2013 Equity Offering - Additional Information (Detail)

v2.4.0.8
2013 Equity Offering - Additional Information (Detail) (USD $)
0 Months Ended 1 Months Ended 9 Months Ended
Aug. 14, 2013
Sep. 30, 2013
Sep. 30, 2013
Equity [Abstract]      
Number of shares offered 6,000,000    
Offering price per share $ 3.00    
Option period 30 days    
Option to purchase additional shares granted to underwriters 900,000    
Underwriters option to purchase shares   184,332  
Net proceeds received from offering   $ 16,700,000 $ 16,784,203
Expenses related to stock offering   $ 1.8