Note 7 - Share-based Compensation (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Schedule of Employee Service Share Based Compensation Allocation of Recognized Period Costs, By Award Type [Table Text Block]

	Three Months Ended
	March 31,
Share-based compensation related to:	2022		2021
Common stock grants	$	100	$	100
Stock option grants		53		53
Restricted Stock Unit Awards ("RSUs")		539		348
Total share-based compensation	$	692	$	501

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

	Shares Under Options		Weighted Average Exercise Price (per share)		Weighted Average Remaining Contractual Life (in years)		Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2021		98,671	$	33.53
Granted		-
Exercised		-
Outstanding at March 31, 2022		98,671	$	33.53		5.57	$	3,221
Exercisable at March 31, 2022		87,955	$	30.63		5.12	$	3,126
Vested and expected to vest at March 31, 2022		98,671	$	33.53	$	5.57	$	3,221

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

	Restricted Stock Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2021		101,168		$	41.78
Awarded		48,099			74.75
Shares vested		(45,785	)		39.75
Shares forfeited		(21	)		74.75
Outstanding at March 31, 2022		103,461		$	49.19