Note 10 - Net Loss Per Share Attributable to Common Stockholders - Calculation of Basic and Diluted Net (Loss) Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Adjustments and reconciling items	$ (8,141)	$ (14,080)	$ (38,718)	$ (54,963)
Shares used to compute net loss per share - basic and diluted (in shares)	228,926,340	227,452,883	228,405,929	193,655,660
Net loss per share - basic and diluted (in dollars per share)	$ (0.04)	$ (0.06)	$ (0.17)	$ (0.28)