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Income Taxes (Narratives) (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019 | Sep. 30, 2018
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Income tax provision (benefit) | $ 1,557,000 | $ 1,877,000 | $ 4,949,000 | $ (1,991,000) |
Remaining state net operating loss | 0 | $ 0 | 0 | $ 0 |
Unrecognized tax benefits | 24,600,000 |  | 24,600,000 |  |
Unrecognized tax benefit future impact if recognized | $ 24,600,000 |  | $ 24,600,000 |  |
ASU 2016-16 | Ireland | Subsidiary |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Deferred tax asset relating to a transfer of certain assets to subsidiary |  |  |  |  | $ 3,700,000

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