Intangible Assets and Goodwill (Components of Gross and Net Intangible Asset Balances) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2023	Jun. 30, 2023
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 246,886	$ 247,444
Accumulated Amortization	233,029	231,381
Net Carrying Amount	$ 13,857	$ 16,063
Developed Technology
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	4 years 10 months 24 days	4 years 1 month 6 days
Gross Carrying Amount	$ 169,089	$ 169,460
Accumulated Amortization	160,875	159,592
Net Carrying Amount	$ 8,214	$ 9,868
Customer Relationships
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	3 years 8 months 12 days	3 years 4 months 24 days
Gross Carrying Amount	$ 64,652	$ 64,839
Accumulated Amortization	59,240	58,894
Net Carrying Amount	$ 5,412	$ 5,945
Trade Names
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	0 years	0 years
Gross Carrying Amount	$ 10,700	$ 10,700
Accumulated Amortization	$ 10,700	$ 10,700
License Agreements
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	3 years 2 months 12 days	3 years 4 months 24 days
Gross Carrying Amount	$ 2,445	$ 2,445
Accumulated Amortization	2,214	2,195
Net Carrying Amount	$ 231	$ 250