CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2012	Mar. 31, 2011
Receivables, allowance for doubtful accounts	$ 39,000	$ 47,000
Class A Common Stock, par value	$ 0.001	$ 0.001
Class A Common Stock, authorized	100,000,000	100,000,000
Class A Common Stock, shares issued	31,159,431	30,679,046
Class A Common Stock, shares outstanding	31,159,431	30,679,046