Income Taxes - Effective Federal Tax Rate (Details)	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Tax at statutory rate	35.00%	35.00%	35.00%
State income tax-net of federal benefit	3.30%	3.00%	3.30%
Foreign tax rate differences	0.60%	(3.00%)	(2.50%)
Research and development tax credit	(7.20%)	(3.40%)	(4.00%)
Qualified production activity deduction	(2.80%)	(1.30%)	(1.80%)
Stock based compensation	2.30%	2.20%	4.50%
Uncertain tax positions	(1.60%)	(0.70%)	(2.10%)
Subpart F income inclusion	(2.90%)	(2.90%)	(3.90%)
Foreign withholding tax	3.30%	3.00%	4.10%
Federal tax return to provision adjustment	0.40%	0.20%	(0.70%)
Other	1.30%	(1.90%)	0.10%
Effective tax rate	31.70%	30.20%	32.00%