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

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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

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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

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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

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Fair value portion of other assets.

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