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Fair Value Disclosure - Cash Equivalents and Long-term Investments (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Jun. 30, 2015
--- | --- | ---
Fair Value, Measurements, Recurring |  |
Asset at Fair Value |  |
Total | $ 2,945 | $ 2,943
Fair Value, Measurements, Recurring | Level 1 |  |
Asset at Fair Value |  |
Total | 312 | 310
Fair Value, Measurements, Recurring | Level 2 |  |
Asset at Fair Value |  |
Total | 0 | 0
Fair Value, Measurements, Recurring | Level 3 |  |
Asset at Fair Value |  |
Total | 2,633 | 2,633
Money market funds | Fair Value, Measurements, Recurring |  |
Asset at Fair Value |  |
Cash and cash equivalents | 312 | 310
Money market funds | Fair Value, Measurements, Recurring | Level 1 |  |
Asset at Fair Value |  |
Cash and cash equivalents | 312 | 310
Money market funds | Fair Value, Measurements, Recurring | Level 2 |  |
Asset at Fair Value |  |
Cash and cash equivalents | 0 | 0
Money market funds | Fair Value, Measurements, Recurring | Level 3 |  |
Asset at Fair Value |  |
Cash and cash equivalents | 0 | 0
Auction rate securities | Fair Value, Measurements, Recurring |  |
Asset at Fair Value |  |
Auction rate securities | 2,633 | 2,633
Auction rate securities | Fair Value, Measurements, Recurring | Level 1 |  |
Asset at Fair Value |  |
Auction rate securities | 0 | 0
Auction rate securities | Fair Value, Measurements, Recurring | Level 2 |  |
Asset at Fair Value |  |
Auction rate securities | 0 | 0
Auction rate securities | Fair Value, Measurements, Recurring | Level 3 |  |
Asset at Fair Value |  |
Auction rate securities | 2,633 | 2,633
Cash |  |
Asset at Fair Value |  |
Cash and cash equivalents | 175,873 | 94,901
Certificates of deposit |  |
Asset at Fair Value |  |
Certificates of deposit | $ 2,128 | $ 1,130

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26610-111562 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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