Note 13 - Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2014

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, 2012		184,500			167,000		$	16.09
Granted		-			-			-
Exercised		(2,003	)		-			6.18
Forfeited		(7,997	)		-			6.18
Balance outstanding as of December 31, 2012		174,500			167,000			16.38
Granted		-			-			-
Exercised		(1,800	)		-			5.23
Forfeited		(4,600	)		(46,000	)		15.86
Balance outstanding as of December 31, 2013		168,100			121,000			16.54
Granted		-			-			-
Exercised		(25,100	)		(14,500	)		5.33
Forfeited		(2,700	)		(24,000	)		19.03
Balance outstanding as of December 31, 2014		140,300			82,500		$	18.23
Options exercisable as of December 31, 2014		133,900			79,500		$	18.81