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Goodwill and Purchased Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015
Components of purchased intangible assets |  |  |
Gross Carrying Amount | $ 234,192 | $ 216,532 |
Accumulated Amortization and Impairment | 215,229 | 212,201 |
Total | 18,963 | 4,331 |
Other intangible assets, amortization expense | 3,000 | 7,600 | $ 15,800
Existing technology |  |  |
Components of purchased intangible assets |  |  |
Gross Carrying Amount | 157,259 | 141,659 |
Accumulated Amortization and Impairment | 140,346 | 138,160 |
Total | $ 16,913 | 3,499 |
Existing technology | Minimum |  |  |
Components of purchased intangible assets |  |  |
Range of Useful Lives | 4 years |  |
Existing technology | Maximum |  |  |
Components of purchased intangible assets |  |  |
Range of Useful Lives | 7 years |  |
Trade name/Trademark |  |  |
Components of purchased intangible assets |  |  |
Range of Useful Lives | 7 years |  |
Gross Carrying Amount | $ 20,993 | 19,893 |
Accumulated Amortization and Impairment | 19,902 | 19,743 |
Total | 1,091 | 150 |
Customer relationships |  |  |
Components of purchased intangible assets |  |  |
Gross Carrying Amount | 55,680 | 54,980 |
Accumulated Amortization and Impairment | 54,959 | 54,298 |
Total | $ 721 | 682 |
Customer relationships | Minimum |  |  |
Components of purchased intangible assets |  |  |
Range of Useful Lives | 7 years |  |
Customer relationships | Maximum |  |  |
Components of purchased intangible assets |  |  |
Range of Useful Lives | 8 years |  |
Backlog |  |  |
Components of purchased intangible assets |  |  |
Gross Carrying Amount | $ 260 | 0 |
Accumulated Amortization and Impairment | 22 | 0 |
Total | $ 238 | $ 0 |
Backlog | Maximum |  |  |
Components of purchased intangible assets |  |  |
Range of Useful Lives | 1 year |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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