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Property, Plant and Equipment (Tables) | 12 Months Ended
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Dec. 31, 2020
Property, Plant and Equipment [Abstract] |
Schedule of property, plant, and equipment | Property, plant and equipment are carried at cost less accumulated depreciation and are depreciated using the straight-line method over the following estimated useful lives:
Land |  | Not amortized
Buildings |  | 30 years
Leasehold improvements |  | Shorter of lease term or estimated useful life
Furniture and fixtures |  | 3 years
Manufacturing equipment |  | 5 to 10 years
Research and development equipment |  | 5 to 10 years
Software and computer equipment |  | 3 years
Vehicles |  | 5 years
A summary of property, plant, and equipment as of December 31, 2020 and 2019, is as follows:
|  | December 31,
(in thousands) |  | 2020 |  | 2019
Manufacturing equipment |  | $ | 62,521 |  |  | $ | 37,939 |
Research and development equipment |  | 12,342 |  |  | 8,933 |
Leasehold improvements |  | 9,277 |  |  | 7,620 |
Building |  | 12,569 |  |  | — |
Finance leases |  | 212 |  |  | 1,108 |
Software |  | 402 |  |  | 274 |
Furniture and fixtures |  | 614 |  |  | 433 |
Vehicles |  | 377 |  |  | 210 |
Land |  | 3,995 |  |  | — |
Assets not yet placed in service |  | 46,148 |  |  | 11,666 |
Total property, plant and equipment |  | $ | 148,457 |  |  | $ | 68,183 |
Less: accumulated depreciation and amortization |  | 33,158 |  |  | 20,709 |
Property, plant and equipment, net |  | $ | 115,299 |  |  | $ | 47,474 |

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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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