CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2011	Mar. 31, 2011
Accounts receivable, reserve for doubtful accounts	$ 10,000	$ 10,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	40,000,000	40,000,000
Common stock, issued	30,714,757	30,812,257
Common stock, outstanding	30,714,757	30,812,257