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Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Dec. 22, 2017 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Income Tax Disclosure [Abstract] |  |  |  |
Federal statutory income tax rate (percent) | 35.00% | 21.00% |  |
Tax at federal statutory rate (benefit) |  | $ (25,303) | $ (5,433) | $ (13,061)
State income tax, net of federal benefit |  | 202 | 517 | 521
Release of foreign valuation allowance |  |  | (2,794) |
Release of US valuation allowance – Tax reform |  |  | (4,680) |
Establishment of Irish valuation allowance |  |  | 8,642 |
US valuation allowance change – deferred tax movement |  | 2,414 | (4,444) | 25,302
Research and development credits |  | (4,947) | (6,598) | (7,311)
Tax impact of foreign earnings |  | 7,687 | 10,562 | (1,065)
Stock based compensation |  | 4,349 | 2,436 | (5,901)
Goodwill amortization |  | 331 | 834 | 2,004
Nondeductible officer compensation |  | 862 | 713 | 1,927
Nondeductible meals and entertainment |  | 364 | 517 | 510
AMT credit monetization |  | (22) |  | (155)
Deferred tax liability release - Tax reform |  |  |  | (2,482)
Gain on transfer of intellectual property ("IP") |  | 19,819 |  |
Other |  | 597 | (293) | (144)
Provision (benefit) for income taxes |  | $ 6,353 | $ (21) | $ 145

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