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