Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2011	Jun. 30, 2011
Common Class A [Member]
Shareholders' Equity
Common stock, par value	$ 0.025	$ 0.025
Common stock, shares authorized	28,000,000	28,000,000
Common stock, shares issued	13,862,445	13,862,445
Treasury stock, shares	502,149	526,583
Common Class B [Member]
Shareholders' Equity
Common stock, par value	$ 0.025	$ 0.025
Common stock, shares authorized	4,500,000	4,500,000
Common stock, shares issued
Convertible Common Stock [Member]
Shareholders' Equity
Common stock, par value	$ 0.025	$ 0.025
Common stock, shares authorized	3,500,000	3,500,000
Common stock, shares issued	2,073,103	2,073,103