Income Taxes - Reconciliations of Federal statutory rate to effective tax rate (Details 2)	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Federal income tax rate	35.00%	35.00%	35.00%
State and local taxes, net of federal benefit	0.20%	0.20%	(0.90%)
Change in federal valuation allowance	(27.80%)	(7.80%)	43.60%
Foreign income tax rates and change in foreign valuation allowance	(5.50%)	(2.20%)	(67.20%)
Foreign withholding tax	0.10%	0.30%	36.50%
Foreign incentive tax rates	(4.50%)	(4.10%)	(30.10%)
Domestic tax on foreign income	2.70%	0.90%	13.60%
Change in liability for uncertain tax positions	(4.90%)	1.50%	(34.90%)
Repatriation of foreign earnings			138.70%
Permanent items	1.50%	(0.60%)	18.80%
Exercise of employee stock options	(4.60%)
Other		0.30%	(3.50%)
Effective tax rate	(7.80%)	23.50%	149.60%