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v3.21.2

Commitments and Contingencies (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Product Warranty [Abstract] |  |  |  |
Period of warranty |  |  | 12 months |
Change in warranty accrual [Roll Forward] |  |  |  |
Beginning accrued product warranty | $ 792 | $ 352 | $ 609 | $ 387
Accruals for warranties issued | 48 | 195 | 549 | 384
Adjustments related to pre-existing warranties including expirations and changes in estimates | (50) | 171 | (189) | 99
Cost of warranty repair | (128) | (189) | (307) | (341)
Ending accrued product warranty | 662 | $ 529 | $ 662 | $ 529
Cross License Agreement |  |  |  |
Preferred label sub abstract as Contractual Obligations |  |  |  |
Term of Agreement |  |  | 10 years |
Dingxing |  |  |  |
Preferred label sub abstract as Contractual Obligations |  |  |  |
Total investment agreement value | 90,000 |  | $ 90,000 |
Kazuo |  |  |  |
Preferred label sub abstract as Contractual Obligations |  |  |  |
Total investment agreement value | 15,000 |  | 15,000 |
Kazuo | Beijing BoYu Semiconductor Vessel Craftwork Technology Co |  |  |  |
Preferred label sub abstract as Contractual Obligations |  |  |  |
Total investment agreement value | $ 8,000 |  | $ 8,000 |

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- Definition Term of agreement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of increase (decrease) in the standard and extended product warranty accrual from changes in estimates attributable to preexisting product warranties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(4)) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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