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Intangible Assets
 9 Months Ended
Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets Intangible Assets
Intangible assets consist of the following as of September 30, 2025 and December 31, 2024.
Gross Carrying AmountAccumulated
Amortization		Net Carrying Amount
September 30, 2025
Definite-lived: Data access agreement$259 $125 $134 
Indefinite-lived: Data purchases1,332 - 1,332 
$1,591 $125 $1,466 
December 31, 2024
Definite-lived: Data access agreement$250 $107 $143 
Indefinite-lived: Data purchases328 - 328 
$578 $107 $471 
Aggregate intangible asset amortization expense was $18 and $14 for the nine months ended September 30, 2025 and 2024, respectively. Aggregate intangible asset amortization expense was $8 and $5 for the three months ended September 30, 2025 and 2024, respectively. These amounts are included in depreciation, amortization and accretion expense in the unaudited consolidated statements of operations.

Estimated future intangible asset amortization expense based upon the carrying value as of September 30, 2025 is as follows:
Remainder of 202520262027202820292030ThereafterTotal
Amortization expense$5 $18 $18 $18 $18 $18 $39 $134