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v3.10.0.1

Commitments and Contingencies (Details) | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2018 USD ($) ft² | May 31, 2017 | Sep. 30, 2018 USD ($) ft² | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) ft² | Sep. 30, 2017 USD ($) | Dec. 31, 2020
Product Warranty [Abstract] |  |  |  |  |  |  |
Period of warranty |  |  |  |  | 12 months |  |
Change in warranty accrual [Roll Forward] |  |  |  |  |  |  |
Beginning accrued product warranty |  |  | $ 178,000 | $ 130,000 | $ 133,000 | $ 251,000 |
Accruals for warranties issued |  |  | 125,000 | 7,000 | 258,000 | 77,000 |
Adjustments related to pre-existing warranties including expirations and changes in estimates |  |  | (10,000) | 18,000 | (33,000) | (114,000) |
Cost of warranty repair |  |  | (65,000) | (17,000) | (130,000) | (76,000) |
Ending accrued product warranty | $ 228,000 |  | $ 228,000 | $ 138,000 | $ 228,000 | $ 138,000 |
Leases [Abstract] |  |  |  |  |  |  |
Area of property under long-term operating lease (in square feet) | ft² | 19,467 |  | 19,467 |  | 19,467 |  |
Additional years per lease option |  |  |  |  | 3 years |  |
Number of additional years to lease term |  | 3 years |  |  |  |  |
Term of royalty agreement |  |  |  |  | 8 years |  |
Aggregate amount payable towards royalty | $ 7,000,000 |  | $ 7,000,000 |  | $ 7,000,000 |  |
Bank Loans [Abstract] |  |  |  |  |  |  |
Outstanding | 291,000 |  | 291,000 |  | 291,000 |  |
Operating leases |  |  |  |  |  |  |
Less than 1 year | 193,000 |  | 193,000 |  | 193,000 |  |
1-3 years | 233,000 |  | 233,000 |  | 233,000 |  |
4-5 years | 26,000 |  | 26,000 |  | 26,000 |  |
Total | 452,000 |  | 452,000 |  | 452,000 |  |
Royalty agreement |  |  |  |  |  |  |
Less than 1 year | 144,000 |  | 144,000 |  | 144,000 |  |
Total | 144,000 |  | 144,000 |  | 144,000 |  |
Total |  |  |  |  |  |  |
Less than 1 year | 337,000 |  | 337,000 |  | 337,000 |  |
1-3 years | 233,000 |  | 233,000 |  | 233,000 |  |
4-5 years | 26,000 |  | 26,000 |  | 26,000 |  |
Total | 596,000 |  | 596,000 |  | 596,000 |  |
ICBC | Secured Debt |  |  |  |  |  |  |
Bank Loans [Abstract] |  |  |  |  |  |  |
Maximum borrowing capacity | $ 2,900,000 |  | $ 2,900,000 |  | $ 2,900,000 |  |
Annual interest rate at end | 4.40% |  | 4.40% |  | 4.40% |  |
Outstanding | $ 291,000 |  | $ 291,000 |  | $ 291,000 |  |
ICBC | Secured Debt | Prime Rate |  |  |  |  |  |  |
Bank Loans [Abstract] |  |  |  |  |  |  |
Spread | 0.04% |  |  |  |  |  |
Forecast |  |  |  |  |  |  |
Leases [Abstract] |  |  |  |  |  |  |
Number of additional years to lease term |  |  |  |  |  |  | 3 years
Dingxing |  |  |  |  |  |  |
Leases [Abstract] |  |  |  |  |  |  |
Total investment agreement value | $ 90,000,000 |  | 90,000,000 |  | 90,000,000 |  |
Kazuo |  |  |  |  |  |  |
Leases [Abstract] |  |  |  |  |  |  |
Total investment agreement value | 15,000,000 |  | 15,000,000 |  | 15,000,000 |  |
Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd Investment | Kazuo |  |  |  |  |  |  |
Leases [Abstract] |  |  |  |  |  |  |
Total investment agreement value | $ 8,000,000 |  | $ 8,000,000 |  | $ 8,000,000 |  |

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