Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Income Tax Holiday [Line Items]
Income tax provision	$ 11,496,000	$ 6,731,000	$ 22,098,000	$ 10,897,000
Effective tax rate	26.90%	33.50%	29.80%	34.10%
U.S. federal R&D tax benefit	2,773,000
Unrecognized tax benefits that would impact effective tax rate, if recognized	11,998,000		11,998,000
Unrecognized tax benefits, income tax penalties and interest accrued	994,000		994,000
Fiscal Year 2014
Income Tax Holiday [Line Items]
U.S. federal R&D tax benefit	$ 1,804,000