Annual report pursuant to Section 13 and 15(d)

Share Repurchase Plan (Details Textual)

v2.4.0.6
Share Repurchase Plan (Details Textual) (USD $)
 12 Months Ended
Nov. 30, 2012
Jun. 06, 2012
Dec. 31, 2011
Nov. 30, 2011
Schedule of Share Repurchase Plan [Line Items]        
Treasury stock, shares 942,474     150,100
Share Repurchase Plan (Textual) [Abstract]        
Number of shares authorized to repurchase   (3,000,000) (1,000,000)  
Number of shares repurchased 792,374      
Average price per share (repurchased) $ 2.15      
Shares repurchase plan Open market purchases, Privately negotiated block trades, Unsolicited negotiated transactions, and/or trading plan in accordance with Rule 10b5-1 of the Securities and Exchange Commission      
Common stock additional share repurchased 84,596      
Average price per share additional repurchased $ 2.46      
Saneron [Member]
        
Schedule of Share Repurchase Plan [Line Items]        
Treasury stock, shares 150,100     150,100