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Property, Plant, and Equipment, Net
 12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment [Abstract]  
Property, Plant, and Equipment, Net Property, Plant, and Equipment, Net
Property, plant, and equipment, net ("PP&E") were as follows:
December 31,
(In thousands)20252024
Buildings$18,019 $17,273 
Computer equipment9,381 9,159 
Furniture and fixtures2,623 2,501 
Leasehold and building improvements28,674 29,404 
Machinery and equipment73,906 75,637 
Software25,075 25,411 
Tooling31,824 30,314 
189,502 189,699 
Accumulated depreciation(163,683)(156,804)
25,819 32,895 
Construction in progress1,781 1,312 
Total property, plant, and equipment, net$27,600 $34,207 

Depreciation expense was $9.1 million, $12.9 million and $18.0 million for the years ended December 31, 2025, 2024 and 2023, respectively.

During the year ended December 31, 2023 , as part of our manufacturing footprint optimization efforts, we made the decision to close our southwestern PRC factory and manufacturing operations at this factory were stopped in September 2023. We also downsized and streamlined the Mexico operations by moving to a smaller, more efficient facility. As a result of these decisions, we recorded impairment charges of $7.7 million, of which $7.6 million and $0.1 million was recorded in cost of sales and SG&A expenses, respectively. In addition, during the year ended December 31, 2023, we recorded an additional $0.2 million of impairment charges, recorded in cost of sales, relating to the underutilization of property, plant and equipment in our other PRC-based factories. During the year ended December 31, 2023, we incurred $7.9 million in impairment charges, recorded in cost of sales, relating to the underutilization of certain property, plant and equipment in our Mexico factory. We have continued to evaluate our global manufacturing footprint as part of our overall cost optimization and return to profitability strategy and, in July 2025, we decided to cease all production activities and began to shut down our Mexico manufacturing facility. As a result of this decision, we recorded impairment charges of $1.2 million in cost of sales on our consolidated statements of operations during the year ended December 31, 2025.


Construction in progress was as follows:
December 31,
(In thousands)20252024
Leasehold and building improvements$45 $102 
Machinery and equipment775 483 
Software 10 60 
Tooling752 638 
Other199 29 
Total construction in progress
$1,781 $1,312 

We expect that most of the assets under construction will be placed into service during the first six months of 2026. We will begin to depreciate the cost of these assets under construction once they are placed into service.
Long-lived tangible assets by geographic area, which include property, plant, and equipment, net and operating lease ROU assets, were as follows: 
December 31,
(In thousands)20252024
United States$5,637 $9,683 
PRC19,935 22,139 
Vietnam7,630 8,520 
Mexico698 5,164 
All other countries3,903 3,023 
Total long-lived tangible assets$37,803 $48,529