Note 6 - Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

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

	Year Ended December 31,
	2023		2022
	(In thousands)
General and administrative expense	$	1,121	$	1,445
	$	1,121	$	1,445

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

	Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value
	(In thousands)					(In years)		(In thousands)
Outstanding at January 1, 2022		29			14.20
Options granted		—			—
Options exercised		—			—
Options canceled/forfeited		(11	)		14.48
Outstanding at December 31, 2022		18			14.05
Options granted		—			—
Options exercised		—			—
Options canceled/forfeited		(10	)		17.11
Outstanding at December 31, 2023		8			10.37		0.39	$	—
Options exercisable at December 31, 2023		8			10.37		0.39		—
Shares available for future grant		1,482

Schedule Of Activity For Restricted Stock Units Deferred Stock Units And Performance Units [Table Text Block]

	Shares			Weighted Average Grant Date Fair Value
	(In thousands)
Unvested at January 1, 2022		202		$	9.70
Granted		343			5.60
Vested		(293	)		5.77
Forfeited		(92	)		13.90
Unvested at December 31, 2022		160			5.70
Granted		678			2.30
Vested		(640	)		2.90
Forfeited		(16	)		7.10
Unvested at December 31, 2023		182			1.89