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Long-Term Debt (4% Promissory Note) - Additional Information (Detail) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jul. 29, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Debt Instrument [Line Items] |  |  |  |  |
Loss on extinguishment of debt |  | $ 98 | $ 0 | $ 98 | $ 0
4% Promissory Note [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Fixed interest rate |  | 4.00% |  | 4.00% |
4% Promissory Note [Member] | Tampa, Florida [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Fixed interest rate | 4.00% |  |  |  |
Early retirement of debt - principal and interest | $ 7,062 |  |  |  |
Loss on extinguishment of debt | $ 98 |  |  |  |

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