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Property, Plant and Equipment | 9 Months Ended
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Sep. 30, 2021
Property Plant And Equipment [Abstract] |
Property, Plant and Equipment | 8. PROPERTY, PLANT AND EQUIPMENT Property, plant and equipment consisted of the following:
|  | As of |  |  | As of |
(In thousands) |  | September 30, 2021 |  |  | December 31, 2020 |
Land |  | $ | 4,575 |  |  | $ | 4,575 |
Building and land improvements |  |  | 34,995 |  |  |  | 35,142 |
Building |  |  | 68,156 |  |  |  | 68,169 |
Furniture and fixtures |  |  | 19,925 |  |  |  | 19,965 |
Computer hardware and software |  |  | 71,615 |  |  |  | 70,942 |
Engineering and other equipment |  |  | 134,689 |  |  |  | 132,920 |
Total property, plant and equipment |  |  | 333,955 |  |  |  | 331,713 |
Less: accumulated depreciation |  |  | (277,399 | ) |  |  | (269,314 | )
Total property, plant and equipment, net |  | $ | 56,556 |  |  | $ | 62,399 |
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. Due to the current economic environment, particularly related to COVID-19, the Company assessed impairment triggers related to long-lived assets during the third quarters of 2021 and 2020. As a result, no impairment test of long-lived assets was performed as of September 30, 2021 and 2020, and no impairment losses of long-lived assets were recorded during the three or nine months ended September 30, 2021 and 2020. Depreciation expense was $3.0 million and $3.1 million for the three months ended September 30, 2021 and 2020 respectively, and $9.1 million for both the nine months ended September 30, 2021 and 2020, which is recorded in cost of revenue, selling, general and administrative expenses and research and development expenses in the Condensed Consolidated Statements of Income (Loss).

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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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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