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Acquisitions - Narrative (Details) $ in Thousands		1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 17, 2021 shares	Jul. 31, 2021 acquisition	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) acquisition	Jun. 30, 2020 USD ($) acquisition	Dec. 31, 2020 USD ($)
Business Combination, Separately Recognized Transactions [Line Items]
Net cash paid					$ 1,002,551	$ 67,595
Fair value adjustments reducing revenue			$ (222,931)	$ (184,290)	(444,936)	(378,980)
Series of Individually Immaterial Business Acquisitions
Business Combination, Separately Recognized Transactions [Line Items]
Total consideration					1,236,372		$ 102,094
Net cash paid					$ 1,002,551	$ 93,032
Number of acquisitions | acquisition					8	6
Acquisition and integration costs			10,233	265	$ 17,094	$ 1,078
Goodwill from acquisition, expected tax deductible amount			16,606		16,606
Series of Individually Immaterial Business Acquisitions | Subsequent Event
Business Combination, Separately Recognized Transactions [Line Items]
Number of acquisitions | acquisition		2
Series of Individually Immaterial Business Acquisitions | Acquired Support Contracts Adjustment To Revenue
Business Combination, Separately Recognized Transactions [Line Items]
Fair value adjustments reducing revenue			998	79	1,010	195
Seequent
Business Combination, Separately Recognized Transactions [Line Items]
Net cash paid			910,997
Acquisition and integration costs			9,180		15,896
Business acquisition, pro forma revenue			$ 241,762	$ 199,339	$ 497,545	$ 419,180
Seequent | Class B Common Stock
Business Combination, Separately Recognized Transactions [Line Items]
Number of shares sold (in shares) | shares	3,141,342

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