Balance Sheet Accounts (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 108,327	$ 109,341
Accumulated Amortization	96,620	89,579
Net Carrying Amount	$ 11,707	$ 19,762
Developed technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	2 months 19 days	3 months 18 days
Gross Carrying Amount	$ 48,000	$ 48,000
Accumulated Amortization	46,444	43,028
Net Carrying Amount	$ 1,556	$ 4,972
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	1 month 6 days	3 months 18 days
Gross Carrying Amount	$ 37,000	$ 37,000
Accumulated Amortization	35,972	32,889
Net Carrying Amount	$ 1,028	$ 4,111
Maintenance contracts
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	2 years	2 years 3 months 18 days
Gross Carrying Amount	$ 17,000	$ 17,000
Accumulated Amortization	9,917	9,067
Net Carrying Amount	$ 7,083	$ 7,933
Trademarks
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	1 month 6 days	3 months 18 days
Gross Carrying Amount	$ 2,500	$ 2,500
Accumulated Amortization	2,431	2,222
Net Carrying Amount	$ 69	$ 278
License agreements
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	7 years	9 years 8 months 12 days
Gross Carrying Amount	$ 2,445	$ 3,413
Accumulated Amortization	963	1,473
Net Carrying Amount	$ 1,482	$ 1,940
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	3 years 4 months 24 days	3 years 8 months 12 days
Gross Carrying Amount	$ 1,382	$ 1,428
Accumulated Amortization	893	900
Net Carrying Amount	$ 489	$ 528