Balance Sheet Parentheticals (USD $)	Nov. 30, 2011	Feb. 28, 2011
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,500,000	1,500,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common Class A [Member]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	22,630,837	22,630,837
Common stock, shares outstanding	20,813,705	20,813,005
Treasury stock, shares	1,817,132	1,817,832
Common Class B [Member]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	2,260,954	2,260,954
Common stock, shares outstanding	2,260,954	2,260,954