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Commitments and Contingencies - Right of Use Assets and Liabilities (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2020 USD ($) ft² | May 31, 2020 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($)
Right-of-use assets and lease liabilities capitalized |  |  | 5.50% | 6.75% | 5.50% | 6.75% |
ROU asset |  |  | $ 207 |  | $ 207 |  | $ 334
Lease liability |  |  | 150 |  | 150 |  | 219
Lease liabilities, long-term |  |  | $ 71 |  | $ 71 |  | $ 140
Right of use assets and liabilities |  |  |  |  |  |  |
Weighted-average remaining lease term |  |  | 9 months 18 days |  | 9 months 18 days |  |
Operating lease costs |  |  | $ 68 | $ 77 | $ 234 | $ 187 |
JAPAN |  |  |  |  |  |  |
Area of sublease space | ft² | 500 |  |  |  |  |  |
Sublease rent per month | $ 1 |  |  |  |  |  |
Singapore |  |  |  |  |  |  |
Area of sublease space | ft² | 275 |  |  |  |  |  |
Hong Kong |  |  |  |  |  |  |
Area of sublease space | ft² | 3,000 |  |  |  |  |  |
Sublease rent per month | $ 2 |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |
Right of use assets and liabilities |  |  |  |  |  |  |
Operating lease costs |  |  | 29 | 29 | 88 | 73 |
Operating expenses |  |  |  |  |  |  |
Right of use assets and liabilities |  |  |  |  |  |  |
Operating lease costs |  |  | $ 39 | $ 48 | $ 146 | $ 114 |
Space located in Irvine, California for executive offices, sales, finance and administration |  |  |  |  |  |  |
Area of sublease space | ft² | 4,351 |  |  |  |  |  |
Sublease rent per month | $ 6 |  |  |  |  |  |
Percentage of annual increase in sublease rent | 3.00% |  |  |  |  |  |
Shenzhen, China manufacturing facility |  |  |  |  |  |  |
Area of sublease space | ft² | 14,476 |  |  |  |  |  |
Sublease rent per month | $ 8 | $ 7 |  |  |  |  |
Shenzhen, China manufacturing facility | Singapore |  |  |  |  |  |  |
Sublease rent per month | $ 1 |  |  |  |  |  |

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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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