Quarterly report pursuant to Section 13 or 15(d)

Treasury Stock (Details Textual)

v2.4.0.6
Treasury Stock (Details Textual) (USD $)
3 Months Ended 12 Months Ended
Apr. 30, 2012
Jan. 31, 2012
Jul. 31, 2012
Stock Repurchase Program, Authorized Amount   $ 25,000,000  
Stock Repurchase Program Shares Authorized to Repurchase Par Value (in dollars per share)   $ 0.01  
Treasury Stock, Shares, Acquired (in shares) 63,000    
Treasury Stock, Value $ 504,000 $ 1,000 $ 505,000