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Fair Value Measurements - Narrative (Details) - USD ($) |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2020 | Oct. 31, 2020 | Dec. 31, 2020 | Jun. 30, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2020 | Oct. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |
Contingent consideration transferred to equity classification |  |  | $ 28,500,000 |  |  | $ 28,463,000 |  |  |
Amounts held in escrow |  |  |  |  |  | 500,000 |  |  |
Trading investments for deferred compensation plan |  |  | 24,056,000 |  |  | 24,056,000 |  | $ 20,085,000 |
Contingent consideration |  |  | 537,000 |  |  | 537,000 |  | 23,284,000 |
Change in fair value of contingent consideration |  |  |  |  |  | 5,716,000 |  |  |
Treasury shares reissued (in shares) |  | 390,397 |  |  |  |  |  |  |
Equity method investments |  |  | 39,900,000 |  |  | 39,900,000 |  | 42,100,000 |
Impairment of non-marketable investments |  |  | 0 |  | $ 0 | 0 | $ 0 |  |
Impairment of long-lived assets held-for-use |  |  | 0 |  | $ 0 | 0 | $ 0 |  |
Fair Value, Measurements, Recurring | Level 1 |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |
Trading investments for deferred compensation plan |  |  | 24,056,000 |  |  | 24,056,000 |  | 20,085,000 |
Contingent consideration |  |  | $ 0 |  |  | $ 0 |  | 0 |
Streamlabs |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |
Future potential earn-out payments | $ 29,000,000.0 |  |  |  |  |  |  |  |
Contingent consideration |  |  |  |  |  |  |  | $ 23,300,000 | $ 40,000.00
Change in fair value of contingent consideration |  |  |  | $ 5,700,000 |  |  |  |  |

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