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Stock-based compensation (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Oct. 14, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved	7,322,516
Stock options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted-average grant-date fair values	$ 3.23	$ 6.38
Unvested stock options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unamortized stock-based compensation cost	$ 8,700
Weighted average period	2 years 6 months 29 days
Common Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Remained shares outstanding	45,055,736	37,289,632	45,025,917	37,107,620
2021 Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved					3,673,015
Remained shares outstanding	89,758
Shares available for grant	573,006
2021 Plan [Member] \| Common Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Remained shares outstanding	3,100,009
2013 Plan [Member] \| Common Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Remained shares outstanding	1,611,890
Shares available for grant	0