Consolidated Balance Sheets (Parenthetical) (USD $)	Oct. 31, 2013	Apr. 30, 2013
Statement of Financial Position [Abstract]
Allowance for doubtful accounts and sales returns	$ 220,000	$ 200,000
Common stock, par value	$ 1	$ 1
Common stock, authorized shares	54,000,000	54,000,000
Common stock, issued shares	2,104,662	1,754,662
Common stock, outstanding shares	2,104,662	1,754,662