Income Taxes - Provision For (Benefit From) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income Tax Reconciliation
Federal tax provision at statutory rate	$ 73,621	$ 73,723	$ 62,815
State income taxes	967	1,153	2,114
Subpart F and dividend income	2,912	3,581	2,799
Foreign taxes and rate differences	(206)	(663)	(222)
Stock-based compensation	991	1,359	763
Tax credits	(6,614)	(3,867)	(3,562)
Tax contingencies	(19,645)	(581)	(641)
Return to provision adjustments	464	658	384
Domestic Production Activity Deduction	(6,261)	(4,892)	(3,600)
Valuation allowance	1,522	49	176
Other	399	168	38
Provision for income taxes	$ 48,150	$ 70,688	$ 61,064

Represents an increase (decrease) in the return to the income tax provision (benefit).

No definition available.

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

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Amount 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 increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount 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 tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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