v3.26.1
Property, Plant and Equipment, Net - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Property Plant and Equipment [Line Items]              
Depreciation         $ 9,673,000 $ 11,589,000  
Property, plant and equipment, gross $ 284,888,000       284,888,000   $ 294,243,000
Impairment charges of property, plant and equipment           288,021,000  
Impairment of property, plant and equipment     $ 955,000     $ 287,567,000 1,000,000
Assets held for sale 32,174,000       32,174,000   32,712,000
Accelerated depreciation         22,200,000    
Deferred revenue, revenue recognized         1,300,000    
Proceeds from legal settlements   $ 37,600,000          
EV Thermal Barrier [Member]              
Property Plant and Equipment [Line Items]              
Deferred revenue, revenue recognized 4,900,000       8,400,000    
Construction in Progress [Member]              
Property Plant and Equipment [Line Items]              
Property, plant and equipment, gross 12,265,000       12,265,000   9,258,000
Impairment charges of property, plant and equipment         3,600,000    
Impairment of property, plant and equipment       $ 286,600,000      
Georgia [Member]              
Property Plant and Equipment [Line Items]              
Loss of remeasured fair value and cost to sell             18,200,000
Assets held for sale             32,700,000
Georgia [Member] | Construction in Progress [Member]              
Property Plant and Equipment [Line Items]              
Property, plant and equipment, gross $ 0       $ 0   $ 0