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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) | 3 Months Ended | 4 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 26, 2021 | Jun. 30, 2021 | Sep. 27, 2020 | Dec. 31, 2020 | Jun. 30, 2021 | Sep. 26, 2021 | Sep. 27, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
FDIC insured amount |  |  |  | $ 250,000 |  |  |  | $ 250,000 |  |  |  |  |  |  |
Cash balance in foreign bank accounts |  |  |  | 4,607,000 |  |  |  | 4,607,000 | $ 206,000 |  |  |  |  |  |
Impairment charges |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |
Amortization expense | $ 3,553,000 |  | $ 2,699,000 |  |  | $ 10,391,000 | $ 8,099,000 | 11,082,000 | 10,456,000 | 4,434,000 |  |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Next Rolling Twelve Months |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 13,421
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Two |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 13,421 |
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Three |  |  |  |  |  |  |  |  |  |  |  |  | $ 13,258 |  |
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Four |  |  |  |  |  |  |  |  |  |  |  | $ 12,444 |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Five |  |  |  |  |  |  |  |  |  |  | $ 12,444 |  |  |  |
Debt Issuance Costs | $ 12,600,000 |  |  | 16,684,000 |  | 12,600,000 |  | 16,684,000 | 15,065,000 |  |  |  |  |  |
Amortization of Debt Issuance Costs |  |  |  |  |  |  |  | $ 3,092 | 3,097 | 3,797 |  |  |  |  |
Effective Income Tax Rate Reconciliation, Percent | 9.90% |  | 28.90% |  |  |  | 23.80% | 50.00% |  |  |  |  |  |  |
Income Tax Examination, Penalties and Interest Accrued |  |  |  | 0 |  |  |  | $ 0 | 0 |  |  |  |  |  |
Unrecognized Tax Benefits |  |  |  | 0 |  |  |  | 0 | 0 |  |  |  |  |  |
Total advertising expenses |  |  |  |  |  |  |  | 4,379 | 3,921 | 997 |  |  |  |  |
Research and Development Expense, Total | $ 7,133,000 |  | $ 5,982,000 |  |  | $ 20,167,000 | $ 17,198,000 | 23,483,000 | 20,630,000 | 6,802,000 |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax |  |  |  |  |  |  |  |  | 397 |  |  |  |  |  |
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax |  |  |  | $ 16,000 |  |  |  | 16,000 |  |  |  |  |  |  |
Other expense |  |  |  |  |  |  |  | 284 | $ 27 | $ 590 |  |  |  |  |
Empower Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase |  |  |  | 13,000,000 | 13,000,000 |  |  |  |  |  |  |  |  |  |
FDIC insured amount |  | $ 250,000 |  | $ 250,000 | $ 250,000 |  |  | $ 250,000 |  |  |  |  |  |  |
Other expense |  | $ (11,203,841) |  | $ (4,169,979) | $ (11,283,973) |  |  |  |  |  |  |  |  |  |
Dilutive securities |  |  |  | 0 | 0 |  |  |  |  |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Remaining Amortization Period |  |  |  |  |  |  |  | 25 years |  |  |  |  |  |  |
Maximum [Member] | Building [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Estimated Useful Lives |  |  |  |  |  |  |  | twenty-five |  |  |  |  |  |  |
Maximum [Member] | Building Improvements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Estimated Useful Lives |  |  |  |  |  |  |  | ten |  |  |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Remaining Amortization Period |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |
Minimum [Member] | Building [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Estimated Useful Lives |  |  |  |  |  |  |  | ten years |  |  |  |  |  |  |
Minimum [Member] | Building Improvements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Estimated Useful Lives |  |  |  |  |  |  |  | three |  |  |  |  |  |  |
Technology-Based Intangible Assets [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax |  |  |  | $ 690 |  |  |  | $ 690 |  |  |  |  |  |  |
Technology-Based Intangible Assets [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Remaining Amortization Period |  |  |  |  |  |  |  | 14 years |  |  |  |  |  |  |
Technology-Based Intangible Assets [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Remaining Amortization Period |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |
Trade Names [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax |  |  |  | $ 16 |  |  |  | $ 16 |  |  |  |  |  |  |
Trade Names [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Remaining Amortization Period |  |  |  |  |  |  |  | 20 years |  |  |  |  |  |  |
Trade Names [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Remaining Amortization Period |  |  |  |  |  |  |  | 15 years |  |  |  |  |  |  |

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