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v3.21.1

Commitment and Contingencies - Additional Information (Detail) |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Aug. 31, 2020 USD ($) shares $ / shares | Jan. 08, 2020 USD ($) | Jan. 08, 2020 TWD ($) | Jan. 15, 2018 USD ($) | Jan. 15, 2018 TWD ($) | Jan. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) $ / shares | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |
Contractual obligation |  |  |  |  |  |  | $ 0 |  |
Revenue |  |  |  |  |  |  | $ 6,875,000 | $ 6,645,000 | $ 7,101,000
Conversion price | $ / shares |  |  |  |  |  |  | $ 3.00 |  |
Loss contingency, Obligated payment |  |  |  | $ 2,697,471 | $ 79,477,648 |  |  |  |
Litigation settlement, amount |  | $ 892,763 | $ 27,084,180 |  |  |  |  |  |
Loss exceeding net worth |  |  |  |  |  |  | $ 100,000 |  |
Convertible Note Purchase Agreement | Convertible Promissory Note | Aeolus Robotics Corporation |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument principal amount | $ 10,000,000 |  |  |  |  |  |  |  |
Debt instrument interest rate stated percentage | 2.00% |  |  |  |  |  |  |  |
Debt instrument maturity date |  |  |  |  |  |  | Aug. 30, 2022 |  |
Debt instrument extendable maturity date |  |  |  |  |  |  | Aug. 30, 2023 |  |
Conversion price | $ / shares | $ 3.00 |  |  |  |  |  |  |  |
Debt instrument convertible number of shares | shares | 3,333,333 |  |  |  |  |  |  |  |
Debt instrument convertible percentage of ordinary shares | 4.62% |  |  |  |  |  |  |  |
License |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |
Expected payment for incentive fee |  |  |  |  |  |  | $ 30,000 |  |
Revenue |  |  |  |  |  |  | $ 500,000 |  |
License agreement extended commencement period |  |  |  |  |  |  | 2020-01 |  |
License agreement extended expiration period |  |  |  |  |  |  | 2022-01 |  |
License | Extended and Amended License Agreement |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |
Expected payment for incentive fee |  |  |  |  |  | $ 30,000 |  |  |
Revenue |  |  |  |  |  | $ 500,000 |  |  |
License | Minimum |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |
License agreement period |  |  |  |  |  |  | 2018-01 |  |
License | Maximum |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |
License agreement period |  |  |  |  |  |  | 2020-01 |  |

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