Quarterly report pursuant to Section 13 or 15(d)

Share Repurchase Plan - Additional Information (Detail)

v3.3.0.814
Share Repurchase Plan - Additional Information (Detail) - USD ($)
 1 Months Ended 9 Months Ended
Oct. 14, 2015
Jun. 30, 2015
Aug. 31, 2015
Aug. 31, 2014
Apr. 08, 2015
Nov. 30, 2014
Jun. 06, 2012
Dec. 31, 2011
Equity, Class of Treasury Stock [Line Items]                
Number of shares authorized to repurchase         (6,000,000)   (3,000,000) (1,000,000)
Share repurchase plan     Open market purchases, privately negotiated block trades, unsolicited negotiated transactions, and/or pursuant to any trading plan that may be adopted in accordance with Rule 10b5-1 of the Securities and Exchange Commission          
Tender offer to purchase common stock price per share   $ 3.25            
Percentage of outstanding common shares purchased under tender offer   7.76%            
Tender offer sales price   $ 2.29            
Number of shares repurchased     3,173,536          
Average price per share (repurchased)     $ 2.54          
Treasury stock, shares     3,173,536     2,215,111    
Subsequent Event [Member]                
Equity, Class of Treasury Stock [Line Items]                
Number of shares repurchased 12,405              
Average price per share (repurchased) $ 3.44              
Maximum [Member]                
Equity, Class of Treasury Stock [Line Items]                
Tender offer to purchase common stock shares   750,000            
Common Stock [Member]                
Equity, Class of Treasury Stock [Line Items]                
Number of shares repurchased   557,805 957,956 968,302        
Average price per share (repurchased)   $ 3.25 $ 3.08 $ 2.37        
Share repurchase plan, shares repurchased value   $ 1,812,866