Stock Based Compensation (Employee Restricted Stock Grant Details) (Details) (Employee Restricted Stock [Member], USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Employee Restricted Stock [Member]
Restricted stock granted	25,000	7,000
Grant date fair value	$ 1,693	$ 390
Closing stock price on grant date	$ 68.12	$ 57.78
Estimated forfeiture rate	4.00%	4.00%