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Summary of Significant Accounting Policies (Schedule of Available-for-sale Securities) (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013
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Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | $ 33,145 | $ 164,363
Fair Value | 33,259 | 164,095
Unrealized Holding Gains | 114 | 126
Unrealized Holding Losses | 0 | (394)
Cash Equivalents |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 567 | 54,285
Fair Value | 567 | 54,285
Unrealized Holding Gains | 0 | 0
Unrealized Holding Losses | 0 | 0
Short-term Investments |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 32,578 | 42,994
Fair Value | 32,692 | 43,034
Unrealized Holding Gains | 114 | 44
Unrealized Holding Losses | 0 | (4)
Marketable Securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 0 | 67,084
Fair Value | 0 | 66,776
Unrealized Holding Gains | 0 | 82
Unrealized Holding Losses | 0 | (390)
Money market funds |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 567 | 54,285
Fair Value | 567 | 54,285
Unrealized Holding Gains | 0 | 0
Unrealized Holding Losses | 0 | 0
U.S. Corporate Debt Securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 32,578 | 110,078
Fair Value | 32,692 | 109,810
Unrealized Holding Gains | 114 | 126
Unrealized Holding Losses | 0 | (394)
U.S. Government Agency Securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost |  | 0
Fair Value |  | 0
Unrealized Holding Gains |  | 0
Unrealized Holding Losses |  | 0
U.S. Municipal Bonds |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost |  | 0
Fair Value |  | 0
Unrealized Holding Gains |  | 0
Unrealized Holding Losses |  | $ 0

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- Definition Amount of accumulated pre-tax unrealized gains before deducting pre-tax unrealized losses on investments in available-for-sale securities impacting investments. + References No definition available. + Details
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- Definition Amount of accumulated pre-tax unrealized loss before deducting pre-tax unrealized gain on investments in available-for-sale securities impacting investments. + References No definition available. + 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=28360136&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=6871852&loc=d3e26610-111562 + Details
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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