Note 8 - Stock-based Compensation - Summary of Restricted Common Stock Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Restricted Stock [Member]
Outstanding, Shares (in shares)	2,567,707	1,467,936	997,745
Outstanding, Weighted average grant date fair value (in dollars per share)	$ 9.03	$ 12.17	$ 20.62
Granted, Shares (in shares)	1,449,847	1,785,958	1,007,919
Granted, Weighted average grant date fair value (in dollars per share)	$ 4	$ 7.47	$ 8.15
Vested, Shares (in shares)	(927,178)	(556,187)	(537,728)
Vested, Weighted average grant date fair value (in dollars per share)	$ 10.97	$ 12.51	$ 20.32
Forfeited, Shares (in shares)	0	(130,000)	0
Forfeited, Weighted average grant date fair value (in dollars per share)	$ 0	$ 8.1	$ 0
Outstanding, Shares (in shares)	3,090,376	2,567,707	1,467,936
Outstanding, Weighted average grant date fair value (in dollars per share)	$ 6.09	$ 9.03	$ 12.17
Restricted Stock [Member] | Common Class A [Member]
Outstanding, Shares (in shares)	1,589,020	1,148,233	677,238
Outstanding, Weighted average grant date fair value (in dollars per share)	$ 9.78	$ 12.37	$ 19.36
Granted, Shares (in shares)	961,422	823,393	738,854
Granted, Weighted average grant date fair value (in dollars per share)	$ 6.97	$ 8.25	$ 8.34
Vested, Shares (in shares)	(485,902)	(382,606)	(267,859)
Vested, Weighted average grant date fair value (in dollars per share)	$ 13.22	$ 14.24	$ 18.95
Outstanding, Shares (in shares)	2,064,540	1,589,020	1,148,233
Outstanding, Weighted average grant date fair value (in dollars per share)	$ 7.66	$ 9.78	$ 12.37
Restricted Stock Units (RSUs) [Member]
Outstanding, Shares (in shares)	1,229,390	587,168	274,145
Outstanding, Weighted average grant date fair value (in dollars per share)	$ 5.72	$ 11.5	$ 23.6
Granted, Shares (in shares)	0	1,229,390	587,168
Granted, Weighted average grant date fair value (in dollars per share)	$ 0	$ 5.72	$ 11.5
Vested, Shares (in shares)	(1,163,515)	(564,793)	(247,953)
Vested, Weighted average grant date fair value (in dollars per share)	$ 5.72	$ 11.5	$ 23.64
Forfeited, Shares (in shares)	(65,875)	(22,375)	(26,192)
Forfeited, Weighted average grant date fair value (in dollars per share)	$ 5.72	$ 11.5	$ 23.15
Outstanding, Shares (in shares)	0	1,229,390	587,168
Outstanding, Weighted average grant date fair value (in dollars per share)	$ 0	$ 5.72	$ 11.5