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Investments - Additional Information (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Schedule of Investments [Line Items] |  |  |
Available-for-sale debt securities, allowance for credit losses | $ 0 | $ 0 |
Purchase an available-for-sale debt securities with credit deterioration | 0 |  |
Carrying value of investment | 1,000,000.0 |  | $ 1,000,000.0
Asset impairments | 0 | 0 | 400,000
Cumulative asset impairment charges | 2,400,000 |  |
Unsecured loan converted to equity investment |  |  | 500,000
Secured Loans Receivable [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Asset impairments | 0 | $ 0 | 500,000
Long-term Investments [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Secured note receivable, noncurrent | $ 400,000 |  | $ 400,000
Investment [Member] | Issuer Concentration [Member] | Market Value of Total Investment Portfolio [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Investment concentration risk percentage | 5.00% |  |

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