XML 33 R56.htm IDEA: XBRL DOCUMENT v2.4.0.8
Treasury Stock and Repurchase Program (Detail Textuals) (USD $)
 3 Months Ended 9 Months Ended 1 Months Ended
Jan. 31, 2014
Oct. 31, 2013
Jul. 31, 2013
Jan. 31, 2014
Jan. 31, 2013
Sep. 19, 2012
September 2012 Share Repurchase Program
Jan. 31, 2011
January 2011 Share Repurchase Program
Jan. 31, 2011
Former Repurchase Program
Equity, Class of Treasury Stock [Line Items]                
Authorized repurchase amount of common stock           $ 3,000,000    
Number of treasury shares 15,922 13,428 25,723     19,953 18,400 85,219
Total average cost $ 160,000 $ 123,000 $ 226,000 $ 509,000 $ 147,000 $ 182,000 $ 354,000 $ 1,036,000