Note 5 - Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

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

	Number of shares
	Incentive Stock Option			Non-Incentive Stock Option			Weighted Average Exercise Price
Balance outstanding as of January 1, 2015		140,300			82,500		$	18.23
Granted		-			-			-
Exercised		(1,300	)		(20,000	)		5.23
Forfeited		(18,000	)		-			23.33
Balance outstanding as of June 30, 2015		121,000			62,500			19.24
Options exercisable as of June 30, 2015		121,000			62,500			19.24

Nonvested Restricted Stock Shares Activity [Table Text Block]

	Number of Shares			Weighted Average Grant-Date Fair Value
Balance of shares non-vested as of January 1, 2015		30,503		$	10.26
Granted		28,451			14.78
Vested		(15,083	)		11.64
Forfeited		-			-
Balance of shares non-vested as of June 30, 2015		43,871			12.72