XML 20 R53.htm IDEA: XBRL DOCUMENT v2.4.0.6
Note I - Capital Stock (Details) (USD $)
 12 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Apr. 30, 2013
Subsidiary Issuer [Member]
Note I - Capital Stock (Details) [Line Items]      
Preferred Stock, Shares Authorized 1,000,000 1,000,000  
Preferred Stock, Par or Stated Value Per Share (in Dollars per share) $ 0.01 $ 0.01 $ 1.00
Preferred Stock, Shares Issued     500,000
Preferred Stock, Dividend Rate, Percentage     8.00%
Preferred Stock, Right of Shareholder, Amount of Shares Available for redemption     400,000
Preferred Stock, Right to Shareholder, Value of redeemed Stock (in Dollars)     $ 400,000