Annual report [Section 13 and 15(d), not S-K Item 405]

Segment Reporting - Schedule of Operations by Reportable Segment (Details)

v3.25.1
Segment Reporting - Schedule of Operations by Reportable Segment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information [Line Items]    
Revenue $ 19,701 $ 153
Gross margin (714) (781)
Research and development (excluding depreciation and amortization) 3,367 2,805
Depreciation and amortization 1,115 733
Goodwill impairment charge 0 649
Intangible asset impairment 0 200
Loss from operations (24,126) (19,308)
Interest expense (994) (9,417)
Other expense, net (26) (1,293)
Net loss and comprehensive loss (25,946) (28,984)
Smart Windows    
Segment Reporting Information [Line Items]    
Revenue 0 0
Fiber Optics    
Segment Reporting Information [Line Items]    
Revenue 13,624 153
Element 82    
Segment Reporting Information [Line Items]    
Revenue 1,472 0
Total    
Segment Reporting Information [Line Items]    
Revenue 19,701 153
Cost of revenue (excluding depreciation and amortization) (19,869) (886)
Gross margin (168) (733)
Compensation (excluding research and development) 12,106 7,243
Travel expenses 606 423
Occupancy (rent and utilities) 765 760
Professional fees 4,042 4,649
General and administrative insurance 226 285
Research and development (excluding depreciation and amortization) 2,812 2,231
Public company expenses 289 183
Other segment items 1,997 1,044
Depreciation and amortization 1,115 733
Goodwill impairment charge   649
Intangible asset impairment   200
Loss on disposal of assets and lease   175
Loss from operations (24,126) (19,308)
Interest expense (994) (9,417)
Other expense, net (826) (259)
Net loss and comprehensive loss (25,946) (28,984)
Operating Segments | Smart Windows    
Segment Reporting Information [Line Items]    
Revenue 0 0
Cost of revenue (excluding depreciation and amortization) 0 0
Gross margin 0 0
Compensation (excluding research and development) 0 0
Travel expenses 125 0
Occupancy (rent and utilities) 299 0
Professional fees 366 0
General and administrative insurance 0 0
Research and development (excluding depreciation and amortization) 2,812 2,231
Public company expenses 0 0
Other segment items 20 0
Depreciation and amortization 555 574
Goodwill impairment charge   0
Intangible asset impairment   0
Loss on disposal of assets and lease   0
Loss from operations (4,177) (2,805)
Interest expense 0 0
Other expense, net 0 0
Net loss and comprehensive loss (4,177) (2,805)
Operating Segments | Fiber Optics    
Segment Reporting Information [Line Items]    
Revenue 13,624 153
Cost of revenue (excluding depreciation and amortization) (16,319) (886)
Gross margin (2,695) (733)
Compensation (excluding research and development) 430 2,487
Travel expenses 350 366
Occupancy (rent and utilities) 197 84
Professional fees 1,011 405
General and administrative insurance 78 132
Research and development (excluding depreciation and amortization) 0 0
Public company expenses 0 1
Other segment items 647 591
Depreciation and amortization 443 156
Goodwill impairment charge   649
Intangible asset impairment   200
Loss on disposal of assets and lease   0
Loss from operations (5,851) (5,804)
Interest expense 0 0
Other expense, net 0 0
Net loss and comprehensive loss (5,851) (5,804)
Operating Segments | Slant Wells    
Segment Reporting Information [Line Items]    
Revenue 4,605 0
Cost of revenue (excluding depreciation and amortization) (2,992) 0
Gross margin 1,613 0
Compensation (excluding research and development) 0 0
Travel expenses 1 0
Occupancy (rent and utilities) 0 0
Professional fees 0 0
General and administrative insurance 0 0
Research and development (excluding depreciation and amortization) 0 0
Public company expenses 0 0
Other segment items 4 0
Depreciation and amortization 48 0
Goodwill impairment charge   0
Intangible asset impairment   0
Loss on disposal of assets and lease   0
Loss from operations 1,560 0
Interest expense 0 0
Other expense, net 0 0
Net loss and comprehensive loss 1,560 0
Operating Segments | Element 82    
Segment Reporting Information [Line Items]    
Revenue 1,472 0
Cost of revenue (excluding depreciation and amortization) (558) 0
Gross margin 914 0
Compensation (excluding research and development) 341 0
Travel expenses 34 0
Occupancy (rent and utilities) 1 0
Professional fees 0 0
General and administrative insurance 22 0
Research and development (excluding depreciation and amortization) 0 0
Public company expenses 0 0
Other segment items 132 0
Depreciation and amortization 65 0
Goodwill impairment charge   0
Intangible asset impairment   0
Loss on disposal of assets and lease   0
Loss from operations 319 0
Interest expense 0 0
Other expense, net 0 0
Net loss and comprehensive loss 319 0
Corporate And Reconciling Items    
Segment Reporting Information [Line Items]    
Revenue 0 0
Cost of revenue (excluding depreciation and amortization) 0 0
Gross margin 0 0
Compensation (excluding research and development) 11,335 4,756
Travel expenses 96 57
Occupancy (rent and utilities) 268 676
Professional fees 2,665 4,244
General and administrative insurance 126 153
Research and development (excluding depreciation and amortization) 0 0
Public company expenses 289 182
Other segment items 1,194 453
Depreciation and amortization 4 3
Goodwill impairment charge   0
Intangible asset impairment   0
Loss on disposal of assets and lease   175
Loss from operations (15,977) (10,699)
Interest expense (994) (9,417)
Other expense, net (826) (259)
Net loss and comprehensive loss $ (17,797) $ (20,375)