Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.2.0.727
Consolidated Balance Sheets (Parenthetical) - USD ($)
Apr. 30, 2015
Apr. 30, 2014
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts and sales returns $ 220,000 $ 220,000
Preferred stock, par value $ 0.01  
Preferred stock, authorized shares 1,300,000  
Preferred stock, outstanding shares 626,600  
Common stock, par value $ 1 $ 1
Common stock, authorized shares 54,000,000 54,000,000
Common stock, issued shares   2,410,512
Common stock, outstanding shares   2,410,512