Intangible Assets (Components of Gross and Net Intangible Asset Balances) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 248,984	$ 232,684
Accumulated Amortization	203,086	196,646
Net Carrying Amount	$ 45,898	$ 36,038
Developed Technologies [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	3 years 4 months 24 days	1 year 9 months 18 days
Gross Carrying Amount	$ 170,600	$ 156,100
Accumulated Amortization	135,112	129,861
Net Carrying Amount	$ 35,488	$ 26,239
Customer Relationships [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	4 years 7 months 6 days	4 years 9 months 18 days
Gross Carrying Amount	$ 64,839	$ 63,039
Accumulated Amortization	55,074	54,204
Net Carrying Amount	$ 9,765	$ 8,835
Backlogs
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	0 years	0 years
Gross Carrying Amount	$ 400	$ 400
Accumulated Amortization	$ 400	$ 400
Trade names
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	7 months 6 days	8 months 12 days
Gross Carrying Amount	$ 10,700	$ 10,700
Accumulated Amortization	10,429	10,128
Net Carrying Amount	$ 271	$ 572
License agreements
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	5 years 2 months 12 days	5 years 4 months 24 days
Gross Carrying Amount	$ 2,445	$ 2,445
Accumulated Amortization	2,071	2,053
Net Carrying Amount	$ 374	$ 392