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v3.21.1

Fair Value Measurements (Narrative) (Details) |  |  |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Feb. 17, 2021 USD ($) | Jan. 04, 2021 USD ($) milestone | Jun. 30, 2020 USD ($) | Mar. 02, 2020 USD ($) | Oct. 31, 2019 USD ($) | Dec. 31, 2020 shares | Jun. 30, 2020 USD ($) | Mar. 31, 2021 USD ($) | Mar. 31, 2020 USD ($) | Mar. 31, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |  |  |  |  |  |  |  |
Fair value of marketable securities |  |  |  |  |  |  |  | $ 24,809,000 | $ 20,085,000 |
Fair value of contingent consideration (earn-out) |  |  |  |  |  |  |  | 6,967,000 | 23,284,000 |
Change in fair value of contingent consideration |  |  |  |  |  |  |  | 5,716,000 | 23,247,000 |
Treasury shares reissued (in shares) | shares |  |  |  |  |  | 390,397 |  |  |  |
Impairment of long-lived assets |  |  |  |  |  |  |  | 0 | 0 | $ 0
Equity securities without readily determinable fair value impairment |  |  |  |  |  |  |  | 2,011,000 | 0 | $ 0
Initial cost basis of securities |  |  |  |  |  |  |  | 2,000,000.0 |  |
Lifesize, Inc. |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |  |  |  |  |  |  |  |
Equity method investment |  |  |  | $ 5,500,000 |  |  |  |  |  |
Proceeds from sale of equity method investments |  |  |  | $ 45,300,000 |  |  |  |  |  |
Marlin |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |  |  |  |  |  |  |  |
Equity method investment |  |  |  |  |  |  |  | 26,700,000 |  |
Fair Value, Measurements, Recurring |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |  |  |  |  |  |  |  |
Equity method investment |  |  |  |  |  |  |  | 40,700,000 | 42,100,000 |
Fair Value, Measurements, Recurring | Level 1 |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |  |  |  |  |  |  |  |
Fair value of marketable securities |  |  |  |  |  |  |  | 24,809,000 | 20,085,000 |
Mevo |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |  |  |  |  |  |  |  |
Future potential earn-out payments | $ 17,000,000.0 |  |  |  |  |  |  |  |  |
Fair value of contingent consideration (earn-out) | $ 3,400,000 |  |  |  |  |  |  |  |  |
Small Technology Acquisition |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |  |  |  |  |  |  |  |
Future potential earn-out payments |  | $ 3,000,000.0 |  |  |  |  |  |  |  |
Number of technical development milestones | milestone |  | 2 |  |  |  |  |  |  |  |
Streamlabs |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |  |  |  |  |  |  |  |
Future potential earn-out payments |  |  | $ 29,000,000.0 |  | $ 29,000,000.0 |  |  |  |  |
Fair value of contingent consideration (earn-out) |  |  |  |  | $ 40,000.00 |  |  | $ 37,000 | $ 23,300,000 |
Change in fair value of contingent consideration |  |  |  |  |  |  | $ 5,700,000 |  |  |
Marlin |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |  |  |  |  |  |  |  |
Percent of voting interest acquired |  |  |  | 10.80% |  |  |  |  |  |
Marlin | Notes Payable, Other Payables |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  | 6.00% |  |  |  |  |  |

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