CONDENSED CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Sep. 30, 2013	Mar. 31, 2013
Allowance for doubtful accounts (in dollars)	$ 222,858	$ 180,306
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	38,070,642	38,028,975
Common stock, shares outstanding	38,070,642	38,028,975
Common Class A [Member]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	100,000	100,000
Common stock, shares issued	0	0
Common stock, shares outstanding	0	0