Income Taxes (Consolidated Effective Income Tax Rate Differed From The U.S. Federal Statutory Income Tax Rate) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Income tax expense computed at the federal statutory rate	$ 65,751	$ 46,602	$ 27,897
Income tax expense computed at the federal statutory rate, percentage	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	5,419	1,914	(232)
State income taxes, net of federal benefit, percentage	2.90%	1.40%	(0.30%)
Foreign rate differential	(4,857)	(7,960)	(6,539)
Foreign rate differential, percentage	(2.60%)	(6.00%)	(8.20%)
Change in valuation allowances	(491)	(4,708)	1,630
Change in valuation allowances, percentage	(0.30%)	(3.50%)	2.00%
Change in reserves	(5,193)	394	(7,655)
Change in reserves, percentage	(2.80%)	0.30%	(9.60%)
Research and development	(3,284)	(2,986)	(2,734)
Research and development, percentage	(1.70%)	(2.20%)	(3.40%)
Non-deductible losses	69	440	678
Non-deductible losses, percentage	0.00%	0.30%	0.90%
Income Tax Reconciliation, Prior Year Income Taxes	0	608	2,243
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes	0.00%	0.50%	2.80%
Other non-deductible expenses	1,315	2,074	393
Other non-deductible expenses, percentage	0.70%	1.60%	0.50%
Statutory tax rate changes	(623)	798	(1,047)
Statutory tax rate changes, percentage	(0.30%)	0.50%	(1.30%)
Other, net	661	2	1,914
Other, net, percentage	0.40%	0.00%	2.40%
Provision for income taxes	$ 58,767	$ 37,178	$ 16,548
Consolidated effective income tax rate, percentage	31.30%	27.90%	20.80%