Income Taxes (Details Textual) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 30, 2012	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011	Jun. 30, 2011
Income Taxes (Textual) [Abstract]
Gross unrecognized tax benefits		$ 22,400,000		$ 22,400,000		$ 20,200,000
Gross unrecognized tax benefits increased during the year				2,200,000
Increase in Unrecognized tax benefit due to current year tax position				419,000
Provision for income taxes		3,561,000	1,168,000	11,108,000	7,029,000
Effective tax rate		23.70%	8.00%	21.00%	12.40%
Interest and penalties accrued related to unrecognized tax benefits		2,100,000		2,100,000
Tax benefit associated with share-based compensation		2,539,000	2,347,000	7,419,000	7,426,000
Effective tax rate, share based compensation		25.40%	15.30%	23.60%	17.50%
Potential tax liability due to disallowance of certain interest deductions	$ 1,000,000