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Balance Sheet Accounts (Components of Gross and Net Intangible Asset Balances) (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Jun. 30, 2017
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 200,866 | $ 121,627
Accumulated Amortization | 115,460 | 97,690
Net Carrying Amount | 85,406 | 23,937
Gross Carrying Amount, Intangibles |  | 123,027
Net Carrying Amount, Intangibles | $ 85,406 | 25,337
In-process research and development, with indefinite life |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |
Fair value of indefinite lived intangibles |  | $ 1,400
Developed technology |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Amortization Period | 3 years 9 months 18 days | 5 years 3 months 18 days
Gross Carrying Amount | $ 117,500 | $ 55,400
Accumulated Amortization | 52,860 | 42,689
Net Carrying Amount | $ 64,640 | $ 12,711
Customer relationships |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Amortization Period | 3 years 8 months 12 days | 3 years 3 months 18 days
Gross Carrying Amount | $ 51,639 | $ 40,300
Accumulated Amortization | 39,577 | 37,567
Net Carrying Amount | $ 12,062 | $ 2,733
Maintenance contracts |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Amortization Period | 7 months 6 days | 1 year 3 months 18 days
Gross Carrying Amount | $ 17,000 | $ 17,000
Accumulated Amortization | 15,016 | 12,467
Net Carrying Amount | $ 1,984 | $ 4,533
Trade names |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Amortization Period | 3 years 8 months 12 days | 4 years 3 months 18 days
Gross Carrying Amount | $ 9,100 | $ 5,100
Accumulated Amortization | 3,776 | 2,846
Net Carrying Amount | 5,324 | $ 2,254
Backlogs |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 1,800 |
Accumulated Amortization | $ 1,800 |
License agreements |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Amortization Period | 5 years 10 months 24 days | 6 years 4 months 24 days
Gross Carrying Amount | $ 2,445 | $ 2,445
Accumulated Amortization | 1,323 | 1,120
Net Carrying Amount | $ 1,122 | $ 1,325
Other intangibles |  |
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Amortization Period | 1 year 10 months 24 days | 2 years 8 months 12 days
Gross Carrying Amount | $ 1,382 | $ 1,382
Accumulated Amortization | 1,108 | 1,001
Net Carrying Amount | $ 274 | $ 381

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