Note 4 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2017

Notes Tables

Share-based Compensation, Stock Options, Activity [Table Text Block]

	Weighted Average Exercise Price		# of shares			Weighted Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value
Outstanding, January 1, 2017	$	5.14		56,400
Granted		-		-
Cancelled	$	5.14		(12,000	)
Exercised	$	5.14		(44,400	)		3.99	$	155,606
Outstanding, June 30, 2017	$	-		-			-	$	-
Exercisable, June 30, 2017	$	-		-			-	$	-
Outstanding, January 1, 2016	$	5.17		68,400
Granted		-		-
Cancelled		-		-
Exercised		-		-
Outstanding, June 30, 2016	$	5.17		68,400			4.99	$	83,933
Exercisable, June 30, 2016	$	5.17		68,400			4.99	$	83,933

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

	Shares			Award Fair Value
Balance, January 1, 2017		62,046		$	8.24
Granted		9,005			8.05
Forfeited		(5,403	)		8.05
Vested		(28,847	)		7.84
Unvested Balance, June 30, 2017		36,801		$	7.93
Balance, January 1, 2016		60,433		$	8.97
Granted		33,685			7.14
Forfeited		(8,187	)		8.97
Vested		(20,784	)		8.97
Unvested Balance, June 30, 2016		65,147		$	8.03

Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]

2017	$	66,928
2018		100,127
2019		58,126
2020		14,853
2021		1,208