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Note 4 - Share-based Compensation (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

		Three Months Ended September 30,								Nine Months Ended September 30,
Share-based compensation related to:		2017				2016				2017				2016
Common stock granted to the Board of Directors		$	-			$	-			$	105			$	105
Common stock granted to the Chief Executive Officer			100				100				300				300
Stock options granted to directors			-				-				105				105
Stock options granted to employees			4				34				25				107
Restricted Stock Unit awards to employees			102				95				307				254
Total share-based compensation		$	206			$	229			$	842			$	871

Share-based Compensation, Stock Options, 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, 2016			232,578			$	16.53
Granted			12,336				27.05
Exercised			(51,285	)			26.88
Expired			(3,750	)			18.85
Outstanding at September 30, 2017			189,879			$	17.41				3.55			$	2,029
Exercisable at September 30, 2017			184,879			$	17.23				3.60			$	2,011
Vested and expected to vest at September 30, 2017			189,879			$	17.41				3.55			$	2,029

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Expected volatility			29.1%
Expected dividends			None
Risk-free interest rate			1.84%
Exercise price			$27.05
Expected term (in years)			5.8
Weighted-average grant date fair value			$8.51

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

		Restricted Stock Units				Weighted Average Award Date Fair Value
Unvested at December 31, 2016			46,558			$	20.05
Awarded			22,770				24.70
Shares vested			(13,419	)			23.54
Unvested at September 30, 2017			55,909			$	20.96

X

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