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Fair Value Measurements - Narrative (Details) - USD ($) |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Oct. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Trading investments for deferred compensation plan |  | $ 23,796,000 |  | $ 23,796,000 |  | $ 20,363,000
Equity method investments |  | 7,000,000.0 |  | 7,000,000.0 |  | 6,600,000
Long-lived assets |  | 9,500,000 |  | 9,500,000 |  | 9,500,000
Impairment of investments without readily determinable fair values |  | 0 | $ 0 | 0 | $ 0 |
Impairment of non-financial assets |  | 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 |  | 23,796,000 |  | 23,796,000 |  | 20,363,000
Fair value of contingent consideration (earn-out) |  | 0 |  | 0 |  | $ 0
Streamlabs |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Maximum additional earn-out | $ 29,000,000.0 |  |  |  |  |
Fair value of contingent consideration (earn-out) | $ 37,000 | $ 40,000.00 |  | $ 40,000.00 |  |

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