Note 10 - Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

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

	December 31, 2023				December 31, 2022
	Shares		Price (1)		Shares		Price (1)
Stock options outstanding and exercisable		23,176	$	38.92		28,122	$	54.03

Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

Options Outstanding									Options Exercisable
	Exercise Price						Remaining				Weighted Average
Number of	Range				Weighted		Contractual		Number of		Exercise
Shares	Low		High		Average		Term (years)		Shares		Price
16,500	$	7.20	$	11.60	$	10.00		3.8		16,500	$	10.00
5,676		90.00		90.00		90.00		1.0		5,676		90.00
1,000		226.20		226.20		226.20		0.7		1,000		226.20
23,176	$	7.20	$	226.20	$	38.92		3.0		23,176	$	38.92

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

				Weighted-Avg.
				Grant Date
				Fair Value
	Shares			per Share
Non-vested restricted stock at December 31, 2022		687,000		$	3.79
Granted		936,434		$	2.18
Vested		(544,198	)	$	3.30
Modifications (accelerated vesting)		(164,000	)	$	2.85
Forfeited		(60,000	)	$	2.30
Non-vested restricted stock at December 31, 2023		855,236		$	2.63

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	Year Ended
	December 31,
	2023		2022
	(in thousands)
Stock compensation expense	$	2,293	$	3,017