Quarterly report pursuant to Section 13 or 15(d)

Share Repurchase Plan (Details Textual)

v2.4.0.6
Share Repurchase Plan (Details Textual) (USD $)
3 Months Ended 3 Months Ended
Feb. 28, 2013
Nov. 30, 2012
Jun. 06, 2012
Dec. 31, 2011
Feb. 28, 2013
Saneron [Member]
Nov. 30, 2012
Saneron [Member]
Feb. 28, 2013
Common Stock [Member]
Feb. 29, 2012
Common Stock [Member]
Share Repurchase Plan (Textual) [Abstract]                
Treasury stock, shares 1,049,602 942,474     150,100 150,100    
Number of shares repurchased 899,502           107,128 415,117
Average price per share (repurchased) $ 2.17           $ 2.31 $ 1.82
Share Repurchase Plan (Additional Textual) [Abstract]                
Number of shares authorized to repurchase     3,000,000 1,000,000        
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