CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Class A common stock purchased	93,351	55,052
Purchases of stock under ESPP, shares	52,191	48,679	28,998
Common Class A [Member]
Class A common stock purchased	93,351	55,052
Common stock outstanding, Shares	13,866,361	13,865,021	13,862,505	13,862,445
Number of shares issued as result of stock conversion	1,340	2,516	60
Common Class C [Member]
Common stock outstanding, Shares	2,069,187	2,070,527	2,073,043	2,073,103
Number of shares converted	1,340	2,516	60