Income Taxes - Provision For (Benefit From) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Income Tax Reconciliation
Federal tax provision at statutory rate	$ 58,665	$ 63,321	$ 63,515
State income taxes	1,225	1,533	1,411
Remeasurement of deferred taxes	0	0	(110,986)
Foreign-derived intangible income (FDII)	(13,581)	(20,326)	0
Global intangible low-taxed income (GILTI)	404	797	0
Effect of foreign operations	6,148	7,395	4,700
Impact of tax accounting method change	6,433	0	0
Foreign taxes and rate differences	404	514	(164)
Stock-based compensation	33	(3,774)	(2,951)
Tax credits	(7,969)	(9,677)	(7,913)
Uncertain tax positions	(3,236)	1,055	(185)
Domestic production activity deduction	0	0	(4,869)
Valuation allowance	504	(550)	2,326
Other, net	656	(123)	235
Provision for income taxes	49,686	$ 40,165	$ (54,881)
Tax Year 2019 [Member]
Income Tax Reconciliation
Impact of tax accounting method change	$ 6,400

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