Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Reduction in income taxes payable
Reduction in income taxes payable		$ 5,965	$ 2,208	$ 37,024
Deferred tax asset valuation allowance
Deferred tax asset valuation allowance	$ (11,259)	(11,259)	$ (10,119)
Unrecognized tax benefits that if recognized would reduce the effective tax rate	3,900	3,900
Accrued interest	500	500
Accrued penalties related to uncertain tax positions	200	200
Benefit for interest and penalties		1,300
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	19,200
Foreign
Tax Credit Carryforward
Net operating loss carryforwards	3,000	3,000
Research and development tax credit carryforward | State
Tax Credit Carryforward
Tax credit carryforward	2,400	2,400
Foreign tax credit carryforwards | Domestic | U.S. Federal
Tax Credit Carryforward
Tax credit carryforward	$ 8,000	$ 8,000