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Note 5 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

		Three-month period ended								Six-month period ended
		June 30,				June 30,				June 30,				June 30,
		2021				2020				2021				2020
Stock options		$	174			$	278			$	337			$	470
Restricted stock grants			12				26				33				64
Total		$	186			$	304			$	370			$	534

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

		Number of Shares				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (years)				Aggregate Intrinsic Value
Outstanding at January 1, 2021			1,217,163			$	6.50
Granted			-				-
Exercised			(128,096	)			4.60
Forfeited or expired			(14,663	)			7.07
Outstanding at June 30, 2021			1,074,404			$	6.72				3.78			$	2,037
Vested and expected to vest at June 30, 2021			998,941			$	6.66				3.66			$	1,963
Exercisable at June 30, 2021			744,455			$	6.42				3.05			$	1,710

X

- Definition

Tabular disclosure of share-based payment arrangement.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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