Note 9 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2026

Notes Tables

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Options Outstanding
	Number of Options			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (years)
Balance—January 1, 2026		13,051		$	109.62		2.55
Options granted		—		$	—		—
Options exercised		—		$	—		—
Options canceled		(1,764	)	$	120.00		1.65
Balance—March 31, 2026		11,287		$	108.00		2.69
Exercisable as of March 31, 2026		11,287		$	108.00		2.69
Vested and expected to vest as of March 31, 2026		11,287		$	108.00		2.69

Nonvested Restricted Stock Shares Activity [Table Text Block]

Restricted Stock Awards	Shares			Weighted Average Grant- Date Fair Value
Nonvested at January 1, 2026		1,338,100		$	1.80
Granted		823,180		$	0.75
Vested		(426,286	)	$	1.64
Forfeited		(31,316	)	$	2.19
Nonvested at March 31, 2026		1,703,678		$	1.33