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Property and Equipment, Net | 9 Months Ended
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Sep. 30, 2025
Property, Plant and Equipment [Abstract] |
Property and Equipment, Net | 4. Property and Equipment, Net Property and equipment, net consisted of the following as of September 30, 2025 and December 31, 2024:
|  | September 30, 2025 |  |  | December 31, 2024 |
Machinery and equipment |  | $ | 46,865 |  |  | $ | 42,040 |
Test stands |  |  | 39,914 |  |  |  | 37,209 |
Buildings |  |  | 48,999 |  |  |  | 48,830 |
Land and land improvements |  |  | 4,472 |  |  |  | 3,505 |
Construction in progress |  |  | 23,159 |  |  |  | 17,551 |
Furniture and fixtures |  |  | 1,262 |  |  |  | 1,200 |
Computer equipment |  |  | 2,900 |  |  |  | 2,156 |
Software |  |  | 1,142 |  |  |  | 1,122 |
Vehicles |  |  | 430 |  |  |  | 421 |
Leasehold improvements |  |  | 9,881 |  |  |  | 7,283 |
Total |  | $ | 179,024 |  |  | $ | 161,317 |
Less: Accumulated depreciation |  |  | (36,469 | ) |  |  | (25,742 | )
Property and equipment, net |  | $ | 142,555 |  |  | $ | 135,575 |
Depreciation expense w as $4.6 million and $3.5 million for the three months ended September 30, 2025 and 2024, respectively, and $12.5 million and $6.5 million for the nine months ended September 30, 2025 and 2024, respectively, and was recorded in the unaudited condensed consolidated statements of net loss within cost of sales, research and development, and selling, general, and administrative expenses.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-7 + Details
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