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Commitments and Contingencies - Additional Information (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Dec. 11, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Loss Contingencies [Line Items] |  |  |
Noncancelable operating leases expiration beginning year |  | 2021 |
Rent expense |  | $ 1,568,000 | $ 1,243,000
Aggregate amount of noncancelable purchase orders |  | 5,113,000 | 1,022,000
Contingent severance obligation accrual |  | $ 0 | 0
Severance obligation change in control period |  | 12 months |
Transaction Bonus Plan ("Plan") |  |  |
Loss Contingencies [Line Items] |  |  |
Percentage of consideration payable | 10.00% |  |
Term of plan | 3 years |  |
Chief Executive Officer | Transaction Bonus Plan ("Plan") |  |  |
Loss Contingencies [Line Items] |  |  |
Percentage of ownership interest in plan | 50.00% |  |
Chief Financial Officer | Transaction Bonus Plan ("Plan") |  |  |
Loss Contingencies [Line Items] |  |  |
Percentage of ownership interest in plan | 10.00% |  |
Other Key Employees [Member] | Transaction Bonus Plan ("Plan") |  |  |
Loss Contingencies [Line Items] |  |  |
Percentage of ownership interest in plan | 40.00% |  |
Consultants [Member] | Transaction Bonus Plan ("Plan") |  |  |
Loss Contingencies [Line Items] |  |  |
Percentage of ownership interest in plan | 9.00% |  |
Pearson Action |  |  |
Loss Contingencies [Line Items] |  |  |
Contingent severance obligation accrual |  |  | 2,000,000
Cost of Revenues |  |  |
Loss Contingencies [Line Items] |  |  |
Royalty expense |  | $ 2,288,000 | 2,886,000
Maximum |  |  |
Loss Contingencies [Line Items] |  |  |
Severance obligation before change in control |  |  | 1,754,000
Severance obligation change in control |  |  | $ 2,345,000
Wireless Essential Patent Holders |  |  |
Loss Contingencies [Line Items] |  |  |
Royalty expire year |  | 2021 |
Wireless Essential Patent Holders | Maximum |  |  |
Loss Contingencies [Line Items] |  |  |
Royalty payment percent of net revenues |  | 5.00% |
Other Providers of Integrated Technologies |  |  |
Loss Contingencies [Line Items] |  |  |
Royalty expire year |  | 2023 |
Other Providers of Integrated Technologies | Maximum |  |  |
Loss Contingencies [Line Items] |  |  |
Royalty payment percent of net revenues |  | 5.00% |

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