Note 7 - Stock-based Awards (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]

Grant Date	Type	Shares		Fair Value Per Share (1)
August 12, 2022	SUA		18	$	6.65
May 20, 2022	SUA		126	$	6.51
April 4, 2022	SUA		2	$	7.04
May 13, 2021	SUA		116	$	6.55
March 16, 2021	SUA		2	$	7.04
January 25, 2021	SUA		2	$	5.54
December 16, 2020	SUA		5	$	4.71
November 11, 2020	Options		40	$	1.13
November 11, 2020	SUA		190	$	4.07

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

	Number of Shares			Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value (2)
Outstanding, December 31, 2021		574		$	14.23	6.1 years	$	100
Granted		-		$	-
Exercised		(1	)	$	4.07
Forfeited		(1	)	$	4.07
Canceled		(64	)	$	15.03
Outstanding, December 31, 2022		508		$	14.19	5.1 years	$	25
Exercisable, December 31, 2022		467		$	14.70	4.9 years	$	14

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

	Number of Shares			Weighted Average Grant-Date Fair Value per Share (3)
Outstanding & Unvested, December 31, 2021		224		$	5.48
Granted		146		$	6.53
Converted to common stock		( 90	)	$	6.33
Cancelled		( 12	)	$	6.29
Forfeited		( 30	)	$	6.26
Outstanding & Unvested, December 31, 2022		238		$	6.10