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Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Other Commitments [Line Items] |  |  |  |  |  |
Actual cash expenditures | $ 5,197 | $ 2,011 | $ 10,977 | $ 5,307 |  |
Network1 [Member] |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |
Cash held in escrow | $ 6,400 |  | $ 6,400 |  |  | $ 24,100
Scenario, Forecast [Member] | Minimum [Member] |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |
Actual cash expenditures |  |  |  |  | $ 10,000 |
Scenario, Forecast [Member] | Maximum [Member] |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |
Actual cash expenditures |  |  |  |  | $ 12,000 |

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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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