Note 6 - Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

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

	Options Outstanding			Weighted Average Exercise Price		Aggregate Intrinsic Value (1)		Weighted Average Contractual Term (years)
Balance at December 31, 2017		187,000		$	7.78
Granted		–			–
Exercised		(13,500	)		8.16
Expired		(18,500	)		10.88
Forfeited		–			–
Balance at March 31, 2018		155,000		$	7.38	$	707,550		6.05
Exercisable at March 31, 2018		95,800		$	7.67	$	409,182		5.64

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

	For the Three Months Ended March 31, 2018					For the Three Months Ended March 31, 2017
	Shares			Weighted- Average Grant Date Fair Value		Shares			Weighted- Average Grant Date Fair Value
Nonvested at beginning of year		32,087		$	8.63		31,546		$	7.03
Granted		22,649			11.32		8,258			9.87
Vested		(12,241	)		7.71		(11,125	)		6.03
Forfeited		-			-		-			-
Nonvested at the end of the period		42,495		$	10.33		28,679		$	8.23