Note 5 - Property and Equipment, Net - Components of Property and Equipment (Details) - USD ($) $ in Thousands |
Sep. 30, 2022 |
Dec. 31, 2021 |
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|---|---|---|---|---|---|
| Property and Equipment, Gross | $ 22,390 | $ 26,714 | |||
| Less accumulated depreciation and amortization | (11,504) | (10,786) | |||
| Property and equipment, net | 10,886 | 15,928 | [1] | ||
| Laboratory Equipment [Member] | |||||
| Property and Equipment, Gross | 4,406 | 4,406 | |||
| Leasehold Improvements [Member] | |||||
| Property and Equipment, Gross | 5,838 | 5,838 | |||
| Computer Equipment and Software [Member] | |||||
| Property and Equipment, Gross | 1,589 | 1,589 | |||
| Construction in Progress [Member] | |||||
| Property and Equipment, Gross | 9,481 | 13,805 | |||
| Tooling [Member] | |||||
| Property and Equipment, Gross | 826 | 826 | |||
| Furniture and Fixtures [Member] | |||||
| Property and Equipment, Gross | $ 250 | $ 250 | |||
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