CONSOLIDATED BALANCE SHEETS [Parenthetical] - USD ($)	Mar. 31, 2015	Mar. 31, 2014
Allowance for doubtful accounts (in dollars)	$ 174,131	$ 172,465
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 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
Common Class B [Member]
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	38,117,517	38,070,642
Common stock, shares outstanding	38,117,517	38,070,642