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Income Taxes - Reconciliations of Federal statutory rate to effective tax rate (Details 2)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Valuation Allowance [Line Items]
Federal income tax rate	35.00%	35.00%	35.00%
State and local taxes, net of federal benefit	0.90%	0.20%	0.20%
Foreign income tax rates	(6.80%)	(5.50%)	(2.20%)
Foreign withholding tax	0.10%	0.10%	0.30%
Foreign incentive tax rates	(3.10%)	(4.50%)	(4.10%)
Domestic tax on foreign income	2.70%	2.70%	0.90%
Change in liability for uncertain tax positions	1.60%	(4.90%)	1.50%
Permanent items	(0.90%)	1.50%	(0.60%)
Exercise of employee stock options	(3.80%)	(4.60%)
Other	(0.80%)		0.30%
Effective tax rate	19.80%	(7.80%)	23.50%
Federal
Valuation Allowance [Line Items]
Change in federal valuation allowance		(27.80%)	(7.80%)
Foreign
Valuation Allowance [Line Items]
Change in federal valuation allowance	(5.10%)

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to unrecognized tax benefits.

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Effective income tax rate reconciliation exercise of employee stock options.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign withholding tax.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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