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v3.21.2

Acquisitions - Narrative (Details) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 17, 2021 USD ($) shares | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) acquisition | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) acquisition
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |  |  |
Net cash paid |  |  |  | $ 1,033,695 | $ 68,920 |
Fair value adjustments reducing revenue |  | $ (248,480) | $ (202,997) | (693,416) | (581,977) |
Series of Individually Immaterial Business Acquisitions |  |  |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |  |  |
Total consideration |  |  |  | 1,269,584 |  | $ 102,094
Net cash paid |  |  |  | $ 1,033,695 |  | $ 93,032
Number of acquisitions | acquisition |  |  |  | 12 |  | 6
Acquisition and integration costs |  | 943 | 531 | $ 18,037 | 1,609 |
Goodwill from acquisition, expected tax deductible amount |  | 16,244 |  | 16,244 |  |
Series of Individually Immaterial Business Acquisitions | Acquired Support Contracts Adjustment To Revenue |  |  |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |  |  |
Fair value adjustments reducing revenue |  | 2,914 | 288 | 3,924 | 483 |
Seequent |  |  |  |  |  |
Business Combination, Separately Recognized Transactions [Line Items] |  |  |  |  |  |
Net cash paid | $ 910,997 |  |  |  |  |
Acquisition and integration costs |  | 389 |  | 16,285 |  |
Business acquisition, pro forma revenue |  | $ 248,480 | $ 220,828 | $ 746,025 | $ 640,008 |
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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