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Property, Plant and Equipment, Net | 9 Months Ended
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Sep. 30, 2025
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment, Net | 8. PROPERTY, PLANT AND EQUIPMENT, NET Property, plant and equipment consisted of the following:
|  | As of |  |  | As of |
(In thousands) |  | September 30, 2025 |  |  | December 31, 2024 |
Engineering and other equipment |  | $ | 200,593 |  |  | $ | 184,694 |
Building |  |  | 52,549 |  |  |  | 50,871 |
Computer hardware and software |  |  | 135,517 |  |  |  | 113,241 |
Building and land improvements |  |  | 43,454 |  |  |  | 39,979 |
Furniture and fixtures |  |  | 21,470 |  |  |  | 20,994 |
Land |  |  | 3,072 |  |  |  | 2,989 |
Total property, plant and equipment |  |  | 456,655 |  |  |  | 412,768 |
Less: accumulated depreciation and amortization |  |  | (335,190 | ) |  |  | (306,314 | )
Total property, plant and equipment, net |  | $ | 121,465 |  |  | $ | 106,454 |
Long-lived assets used in operations are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable and the undiscounted cash flows estimated to be generated by the asset are less than the asset’s carrying value. Depreciation and amortization expense was $7.9 million and $7.2 million for the three months ended September 30, 2025 and 2024, respectively, and $22.3 million and $21.2 million fo r the nine months ended September 30, 2025 and 2024, respectively, which is recorded in cost of revenue, selling, general and administrative expenses and research and development expenses in the Condensed Consolidated Statements of Loss. Assets Held For Sale On December 31, 2024, the Company determined it met the held for sale criteria pursuant to ASC 360, "Impairment and Disposal of Long-Live Assets" on the Company's property located at the North and South Towers in its Huntsville, Alabama campus and ceased recording depreciation on the assets. The Company continues to assess the probability that the sale of its headquarters in Huntsville will occur and has determined it is probable of occurring in the next twelve months. The Company records assets held for sale at the lower of their carrying value or fair value. The total carrying value of assets held for sale was $11.9 million as of September 30, 2025 and December 31, 2024, respectively, and is separately recorded on the balance sheet.

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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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