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Note 9 - Share-based Compensation and Employee Benefit Plan (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

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

Three months ended September 30, 2021:		Number of Shares Awarded				Weighted Average Grant Date Fair Value
Unvested at June 30, 2021			35,270			$	8.12
Vested			(700	)		$	17.85
Forfeited			(4,586	)			9.39
Unvested at September 30, 2021			29,984			$	7.69

Nine months ended September 30, 2021:
Unvested at December 31, 2020			18,498			$	7.29
Granted			20,476			$	10.48
Vested			(4,404	)		$	17.21
Forfeited			(4,586	)		$	9.39
Unvested at September 30, 2021			29,984			$	7.69

Three months ended September 30, 2020:		Number of Shares Awarded				Weighted Average Grant Date Fair Value
Unvested at June 30, 2020			26,597			$	8.89
Vested			(1,200	)		$	17.41
Unvested at September 30, 2020			25,397			$	8.49

Nine months ended September 30, 2020:
Unvested at December 31, 2019			21,470			$	12.91
Granted			12,484			$	6.12
Vested			(6,372	)		$	16.20
Forfeited			(2,185	)		$	15.92
Unvested at September 30, 2020			25,397			$	8.49