Note 9 - Stock-Based Compensation- Restricted Stock Activity (Details) - Restricted Stock [Member] shares in Thousands	3 Months Ended
	Mar. 31, 2026 $ / shares shares
Unvested, balance (in shares) | shares	1,492
Unvested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.47
Granted, balance (in shares) | shares	203
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0.69
Vested, balance (in shares) | shares	(844)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.13
Canceled and forfeited, balance (in shares) | shares	(113)
Canceled and forfeited, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.1
Unvested, balance (in shares) | shares	738
Unvested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.7