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Balance Sheet Accounts (Schedule of Gross and Net Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2012 | Jun. 30, 2012
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 12,616 | $ 12,282
Accumulated Amortization | 7,613 | 7,176
Net Carrying Amount | 5,003 | 5,106
Patents |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Amortization Period | 7 years 4 months 24 days | 7 years 4 months 24 days
Gross Carrying Amount | 1,800 | 1,800
Accumulated Amortization | 740 | 669
Net Carrying Amount | 1,060 | 1,131
License Agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Amortization Period | 9 years 7 months 6 days | 9 years 3 months 18 days
Gross Carrying Amount | 10,157 | 10,158
Accumulated Amortization | 6,542 | 6,231
Net Carrying Amount | 3,615 | 3,927
Other Intangibles |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Amortization Period | 3 years | 3 months 18 days
Gross Carrying Amount | 659 | 324
Accumulated Amortization | 331 | 276
Net Carrying Amount | $ 328 | $ 48

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