Note 6 - Stock-based Compensation and Option Plans (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

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

	Options			Weighted average		Weighted average		Intrinsic value
	(000s)			exercise price		remaining life		per share
Options outstanding December 31, 2020		196		$	49.69
Forfeited/Expired		(141	)		48.11
Options outstanding December 31, 2021		55		$	53.79
Forfeited/Expired		(55	)		53.79
Options outstanding December 31, 2022		-		$	-		-	$	-
Exercisable at end of year		-		$	-		-	$	-

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

	Number of Shares			Weighted average grant date fair value
Unvested December 31, 2020		41		$	31.37
Granted		(24	)		33.23
Vested/Released		(3	)		32.07
Unvested December 31, 2021		14		$	27.97
Granted		1,650			1.25
Vested/Released		(1,664	)		2.10
Unvested December 31, 2022		-		$	-

Schedule of Nonvested Performance-Based Units Activity [Table Text Block]

	Number of Shares			Weighted average grant date fair value
Unvested December 31, 2020		44		$	33.73
Granted		-			-
Vested/Released		-			-
Forfeited		(16	)		45.73
Unvested December 31, 2021		28		$	26.80
Granted		-			-
Vested/Released		-			-
Forfeited		(28	)		26.80
Unvested December 31, 2022		-		$	-