Fair Value Disclosure - Cash Equivalents and Long-term Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Jun. 30, 2015
Fair Value, Measurements, Recurring
Asset at Fair Value
Total assets measured at fair value	$ 2,958	$ 2,943
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1
Asset at Fair Value
Total assets measured at fair value	315	310
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Asset at Fair Value
Total assets measured at fair value	0	0
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3
Asset at Fair Value
Total assets measured at fair value	2,643	2,633
Money Market Funds \| Fair Value, Measurements, Recurring
Asset at Fair Value
Cash and cash equivalents	315	310
Money Market Funds \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1
Asset at Fair Value
Cash and cash equivalents	315	310
Money Market Funds \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Asset at Fair Value
Cash and cash equivalents	0	0
Money Market Funds \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, 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	2,643	2,633
Auction Rate Securities \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1
Asset at Fair Value
Auction rate securities	0	0
Auction Rate Securities \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Asset at Fair Value
Auction rate securities	0	0
Auction Rate Securities \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3
Asset at Fair Value
Auction rate securities	2,643	2,633
Cash
Asset at Fair Value
Cash and cash equivalents	180,426	94,901
Certificates of Deposit
Asset at Fair Value
Certificates of deposit	$ 2,133	$ 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=66048111&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=65884222&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=73527792&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=66010992&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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value portion of other assets.

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