Note 7 - Share-based Compensation and Employee Benefit Plan (Tables)

6 Months Ended

Jun. 30, 2019

Notes Tables

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

Three months ended June 30, 2019:	Number of Shares Awarded			Weighted Average Grant Date Fair Value
Unvested at March 31, 2019		22,854		$	13.66
Granted		9,675		$	15.52
Vested		(3,000	)	$	16.90
Unvested at June 30, 2019		29,529		$	13.94
Six months ended June 30, 2019:
Unvested at December 31, 2018		31,790		$	14.06
Granted		9,675		$	15.52
Vested		(11,936	)	$	15.53
Unvested at June 30, 2019		29,529		$	13.94

Three months ended June 30, 2018:	Number of Shares Awarded			Weighted Average Grant Date Fair Value
Unvested at March 31, 2018		37,034		$	14.20
Granted		4,124		$	18.55
Vested		(1,968	)	$	16.05
Forfeited		(1,104	)	$	14.15
Unvested at June 30, 2018		38,086		$	14.57
Six months ended June 30, 2018:
Unvested at December 31, 2017		25,870		$	12.15
Granted		18,323		$	18.07
Vested		(4,903	)	$	14.93
Forfeited		(1,204	)	$	14.26
Unvested at June 30, 2018		38,086		$	14.57