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Financial Statement Components - Narrative (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]          
Inventory write-downs $ 1,200,000 $ 900,000 $ 3,426,000 $ 17,806,000  
Depreciation and amortization 3,300,000 5,400,000 6,700,000 12,500,000  
Restructuring and related cost, accelerated depreciation 100,000   300,000    
Amortization expense     2,063,000   $ 4,188,000
Estimated contract losses (recoveries) 400,000 10,200,000 500,000 12,500,000  
Optogration, Inc.          
Finite-Lived Intangible Assets [Line Items]          
Amortization expense 1,000,000 $ 1,000,000 2,100,000 $ 2,000,000  
Freedom Photonics | Autonomy Solutions          
Finite-Lived Intangible Assets [Line Items]          
Cumulative goodwill impairment charge 0   0    
Freedom Photonics | ATS          
Finite-Lived Intangible Assets [Line Items]          
Cumulative goodwill impairment charge $ 15,900,000   $ 15,900,000