Note 11 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

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

	Stock Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (in years)		Aggregate Intrinsic Value
Outstanding at January 1, 2024		5,272		$	0.58		5.3	$	-
Options forfeited/expired		(130	)		0.44		-		-
Outstanding at March 31, 2024		5,142		$	0.58		5.0	$	-
Options vested and exercisable at March 31, 2024		5,142		$	0.58		5.0	$	-

Schedule of Unvested Restricted Stock Units Roll Forward [Table Text Block]

	Number of Shares			Weighted Average Grant Date Fair Value per Share
Nonvested at January 1, 2024		10,095		$	0.050
Restricted stock granted		525			0.041
Vested		(3,236	)		-
Forfeited		(50	)		-
Nonvested at March 31, 2024		7,334		$	0.062