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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2025
Accounting Policies [Abstract]  
Schedule of Significant Expense Categories
The significant expense categories and amounts that are regularly provided to the CODM and included in the reported measure of segment loss for the years ended December 31, 2025 and 2024 are summarized as follows (in millions):
Year Ended December 31,
20252024
Total revenues$3.5 $1.5 
Total cost of revenues3.3 1.4 
Gross profit0.2 0.1 
Administrative and office6.4 7.7 
Depreciation and amortization6.0 3.1 
Facilities5.6 5.1 
Personnel24.9 24.3 
Product development, exclusive of other costs presented15.7 15.0 
Professional services5.5 5.2 
Exit and termination costs0.5 3.0 
Other operating expense1.2 1.0 
Total operating expenses65.8 64.4 
Other income, net8.4 12.3 
Net loss$(57.2)$(52.0)
Schedule of Restrictions on Cash and Cash Equivalents
Total cash and cash equivalents and restricted cash as presented in the consolidated statements of cash flows is summarized as follows:
December 31, 2025December 31, 2024December 31, 2023
Cash and cash equivalents$22,938 $9,227 $12,881 
Restricted cash included in prepaid expenses and other current assets— — 7,918 
Restricted cash included in other assets665 665 665 
$23,603 $9,892 $21,464 
Schedule of Estimated Useful Lives Depreciation is calculated using the straight-line method, based upon the following estimated useful lives:
Production machinery and equipment
2 to 12 years
Vehicles
3 to 7 years
Leasehold improvements
shorter of lease term or 7 years
Furniture and fixtures3 years
Computers and related equipment
3 to 7 years
Schedule of Significant Customers The portion of our revenues from significant customers is summarized as follows and is attributable to the U.S.:
Year Ended December 31,
20252024
Customer A81 %88 %
Customer B19 12 
100 %100 %