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Basis of Presentation and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2021
Accounting Policies [Abstract] |
Schedule of Property and Equipment | Property and equipment are stated at cost less accumulated depreciation and amortization, and are depreciated using the straight-line method over the estimated useful lives of the assets as follows:
Asset Category |  | Estimated useful lives
Machinery and equipment |  | 5 to 7 years
Tooling |  | 1 to 3 years
Computer hardware and software |  | 3 to 5 years
Demonstration fleet and demonstration units |  | 2 to 5 years
Leasehold improvements |  | Shorter of useful life or lease term
Vehicles |  | 5 years
Furniture and fixtures |  | 7 years
Property and equipment consisted of the following (in thousands):
| December 31,
| 2021 |  | 2020
Machinery and equipment | $ | 7,694 |  |  | $ | 5,940 |
Computer hardware and software | 2,854 |  |  | 2,450 |
Demonstration fleet and demonstration units | 811 |  |  | 1,821 |
Leasehold improvements | 869 |  |  | 791 |
Vehicles | 1,610 |  |  | 835 |
Furniture and fixtures | 272 |  |  | 293 |
Construction in progress | 3,677 |  |  | 1,410 |
Total property and equipment | 17,787 |  |  | 13,540 |
Accumulated depreciation and amortization | (6,778) |  |  | (5,851) |
Total property and equipment, net | $ | 11,009 |  |  | $ | 7,689 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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