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Balance Sheet Accounts (Schedule of Gross and Net Intangible Assets) (Details) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended 12 Months Ended
Dec. 31, 2012
Jun. 30, 2012
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 12,617 $ 12,282
Accumulated Amortization 7,978 7,176
Net Carrying Amount 4,639 5,106
Patents
    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Remaining Amortization Period 7 years 2 months 12 days 7 years 4 months 24 days
Gross Carrying Amount 1,800 1,800
Accumulated Amortization 775 669
Net Carrying Amount 1,025 1,131
License Agreements
    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Remaining Amortization Period 10 years 9 years 3 months 18 days
Gross Carrying Amount 10,158 10,158
Accumulated Amortization 6,845 6,231
Net Carrying Amount 3,313 3,927
Other Intangibles
    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Remaining Amortization Period 2 years 8 months 12 days 3 months 18 days
Gross Carrying Amount 659 324
Accumulated Amortization 358 276
Net Carrying Amount $ 301 $ 48