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Commitments and Contingencies - Additional Information (Detail) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2021 USD ($) Title | Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) Title | Dec. 31, 2019 USD ($) | Dec. 31, 2018
International Gaming Technologies [Member] |  |  |  |  |
Percentage of royalty on revenue |  |  |  |  | 10.00%
Long-term purchase commitment, period | 10 years |  | 10 years |  |
Cost of revenue | $ | $ 3.0 | $ 3.0 | $ 13.5 | $ 11.5 |
DoubleU Games License Agreement [Member] |  |  |  |  |
Number of titled games | Title | 38 |  | 32 |  |
Maximum [Member] | International Gaming Technologies [Member] |  |  |  |  |
Percentage of royalty on revenue | 15.00% |  | 15.00% |  |
Minimum [Member] | International Gaming Technologies [Member] |  |  |  |  |
Percentage of royalty on revenue | 7.50% |  | 7.50% |  |

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