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Fair Value Measurements - Narrative (Details) - USD ($) |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2020 | Oct. 31, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Mar. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Trading investments for deferred compensation plan | $ 22,911,000 |  | $ 22,911,000 |  | $ 20,085,000
Contingent consideration | 29,000,000 |  | 29,000,000 |  | 23,284,000
Change in fair value of contingent consideration |  |  | 5,716,000 |  |
Equity method investments | 42,300,000 |  | 42,300,000 |  | 42,100,000
Cost method investments | 3,900,000 |  | 3,900,000 |  | 3,900,000
Impairment of non-marketable investments |  |  | 0 | $ 0 |
Impairment of long-lived assets held-for-use |  |  | 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 | 22,911,000 |  | 22,911,000 |  | 20,085,000
Contingent consideration | 0 |  | 0 |  | 0
Fair Value, Measurements, Recurring | Level 3 |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Trading investments for deferred compensation plan | 0 |  | 0 |  | 0
Contingent consideration | 0 |  | 0 |  | 23,284,000
Streamlabs |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Future potential earn-out payments | 29,000,000.0 | $ 29,000,000.0 |  |  |
Contingent consideration | $ 29,000,000.0 | $ 40,000.00 | 29,000,000.0 |  | $ 23,300,000
Change in fair value of contingent consideration |  |  | $ 5,700,000 |  |

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