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Significant Transactions - Kudu (Details) - USD ($) | Mar. 31, 2021 | Dec. 31, 2020 | Apr. 07, 2020 | Mar. 31, 2020
--- | --- | --- | --- | ---
Other Significant Noncash Transactions [Line Items] |  |  |  |
Goodwill | $ 613,400,000 | $ 525,500,000 |  |
Total commitment under revolving credit facility |  |  | $ 291,400,000 | $ 234,000,000.0
Kudu |  |  |  |
Other Significant Noncash Transactions [Line Items] |  |  |  |
Ownership interest (as a percent) | 99.30% |  |  |
Fully diluted ownership interest (as a percent) | 84.80% |  |  |

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