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Fair Value Measurements (Narrative) (Details)				9 Months Ended	12 Months Ended
	May 19, 2021 USD ($) milestone	Feb. 17, 2021 USD ($)	Jan. 04, 2021 USD ($) milestone	Dec. 31, 2022 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($) shares	Mar. 31, 2021 USD ($) shares	Oct. 31, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value of contingent consideration upon acquisition					$ 2,151,000	$ 9,973,000
Payment of contingent consideration for business acquisition					5,954,000	880,000	$ 0
Equity method investment					20,500,000	40,200,000
Impairment of equity method investments					21,400,000	0	0
Initial cost basis of securities					12,600,000	2,900,000
Equity securities without readily determinable fair value, upward price adjustment, annual amount					6,900,000
Financial asset impairment charges					0	0	0
Non-financial asset impairment charges					0		0
Impairment of intangible assets					0	7,000,000	0
Discontinued operations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impairment of intangible assets						7,000,000
Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value of marketable securities					28,200,000	$ 28,400,000
Small Technology Acquisition
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Payments to acquire businesses, gross	$ 25,600,000
Future potential earn-out payments	$ 10,000,000
Number of technical development milestones | milestone	3
Fair value of contingent consideration upon acquisition	$ 10,000,000
Small Technology Acquisition | First Technical Development Milestone
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Payment of contingent consideration for business acquisition				$ 900,000
Small Technology Acquisition | Second Technical Development Milestone
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Payment of contingent consideration for business acquisition					4,000,000
Mevo
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Payments to acquire businesses, gross		$ 33,200,000
Future potential earn-out payments		17,000,000
Fair value of contingent consideration upon acquisition		$ 3,400,000
Fair value of contingent consideration (earn-out)							$ 3,400,000
Small Technology Acquisition Two
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Payments to acquire businesses, gross			$ 11,000,000
Number of technical development milestones | milestone			2
Fair value of contingent consideration (earn-out)			$ 3,000,000
Small Technology Acquisition Two | First Technical Development Milestone
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Payment of contingent consideration for business acquisition					2,000,000
Small Technology Acquisition Two | Second Technical Development Milestone
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value of contingent consideration (earn-out)					$ 1,000,000
Streamlabs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total earn out payment								$ 29,000,000
Treasury shares reissued (in shares) | shares						4,010	390,397

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