Basis of Presentation and Summary of Significant Accounting Policies (Schedule of Fair Value for Financial Assets Measured on a Recurring Basis) (Details) (Recurring, USD $)	Jun. 30, 2013	Jun. 30, 2012
Level 1
Assets
Foreign currency forward contracts	$ 0	$ 0
Total	54,285,000	36,141,000
Level 2
Assets
Foreign currency forward contracts	21,000	179,000
Total	109,831,000	99,098,000
Level 3
Assets
Foreign currency forward contracts	0	0
Total	0	0
Total
Assets
Foreign currency forward contracts	21,000	179,000
Total	164,116,000	135,239,000
Municipal Bonds | Level 1
Assets
Investments		0
Municipal Bonds | Level 2
Assets
Investments		2,736,000
Municipal Bonds | Level 3
Assets
Investments		0
Municipal Bonds | Total
Assets
Investments		2,736,000
Federal Agency Notes | Level 1
Assets
Investments		0
Federal Agency Notes | Level 2
Assets
Investments		11,234,000
Federal Agency Notes | Level 3
Assets
Investments		0
Federal Agency Notes | Total
Assets
Investments		11,234,000
Money Market Funds | Level 1
Assets
Investments	54,285,000	36,141,000
Money Market Funds | Level 2
Assets
Investments	0	0
Money Market Funds | Level 3
Assets
Investments	0	0
Money Market Funds | Total
Assets
Investments	54,285,000	36,141,000
Corporate Notes and Bonds | Level 1
Assets
Investments	0	0
Corporate Notes and Bonds | Level 2
Assets
Investments	109,810,000	84,949,000
Corporate Notes and Bonds | Level 3
Assets
Investments	0	0
Corporate Notes and Bonds | Total
Assets
Investments	$ 109,810,000	$ 84,949,000