v3.26.1
Other (Income) Expense, Net - Schedule of Other Expense (Income) (Detail) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2023
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Other Income and Expenses [Abstract]                
Interest expense   $ 8 $ 196 $ 36 $ 654 $ 895 $ 1,144 $ 1,151
Interest income   (41) (3) (64) (8) (33) (27) (252)
Imputed interest expense on 2025 bridge loans   0 112 0 137 154 0 0
Gain on extinguishment of the CFF 2021 award           (1,236) 0 0
Gain on extinguishment of accrued interest   0 0 (56) 0      
Change in fair value of warrant liabilities   62 0 62 0 0 (376) (1,593)
Change in fair value of derivative liabilities           (95) 0 50
Gain on sale of fixed assets           (1) (38) (288)
Gain on debt conversion           (154) 0 0
Loss on debt extinguishment           0 25 436
Loss on issuance of common stock $ 200         0 0 231
Other expense           27 (53) 31
Other expense   23 4 32 13      
Total other expense (income), net   $ 52 $ 309 $ 10 $ 796 $ (443) $ 675 $ (234)