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v3.19.3

Commitments and Contingencies (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 USD ($) ft² | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) ft² | Sep. 30, 2018 USD ($)
Product Warranty [Abstract] |  |  |  |
Period of warranty |  |  | 12 months |
Change in warranty accrual [Roll Forward] |  |  |  |
Beginning accrued product warranty | $ 353 | $ 178 | $ 236 | $ 133
Accruals for warranties issued | 146 | 125 | 388 | 258
Adjustments related to pre-existing warranties including expirations and changes in estimates | 27 | (10) | 175 | (33)
Cost of warranty repair | (183) | (65) | (456) | (130)
Ending accrued product warranty | $ 343 | $ 228 | $ 343 | $ 228
Leases |  |  |  |
Area of property under long-term operating lease (in square feet) | ft² | 19,467 |  | 19,467 |
Term of royalty agreement |  |  | 8 years |
Dingxing |  |  |  |
Leases |  |  |  |
Total investment agreement value | $ 90,000 |  | $ 90,000 |
Kazuo |  |  |  |
Leases |  |  |  |
Total investment agreement value | 15,000 |  | 15,000 |
Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd Investment | Kazuo |  |  |  |
Leases |  |  |  |
Total investment agreement value | $ 8,000 |  | $ 8,000 |

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