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Note 11 - Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

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

		20 16								20 15								20 14
						Weighted								Weighted								Weighted
						Average								Average								Average
		Option				Exercise				Option				Exercise				Option				Exercise
		Shares				Price				Shares				Price				Shares				Price
Outstanding at January 1			68,400			$	5.17				72,400			$	5.16				84,600			$	5.04
Granted			-				-				-				-				-				-
Forfeited or expired			(12,000	)			5.30				(2,000	)			4.96				-				-
Exchanged			-				-				-				-				-				-
Exercised			-				-				(2,000	)			4.96				(12,200	)			4.32
Outstanding at December 31			56,400			$	5.14				68,400			$	5.17				72,400			$	5.16
Exercisable at end of year			56,400			$	5.14				68,400			$	5.17				72,400			$	5.16
Weighted-average fair value of options granted during year			n/a								n/a								n/a

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

					Options Outstanding & Exercisable
									Weighted				Weighted
									Average				Average
					Option				Exercise				Maturity
Exercise Price Range					Shares				Price				(Years)
	$4.41					20,400			$	4.41				3.77
	$4.80					9,000				4.80				4.22
$5.30	to	$6.87				27,000				5.81				4.95
						56,400			$	5.14				4.41

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

		2016				2015				2014
Weighted average grant-date fair value of stock options granted			n/a				n/a				n/a
Total fair value of stock options vested			n/a				n/a				n/a
Total intrinsic value of stock options exercised		$	-			$	2,953			$	14,816

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

		Shares				Grant Fair Value
Balance, January 1, 2015			34,601			$	8.96
Granted			34,484				8.99
Forfeited			-				-
Vested			(8,652	)			8.96
Balance, December 31, 2015			60,433			$	8.97
Balance, January 1, 2016			60,433			$	8.97
Granted			33,685				7.14
Forfeited			(8,187	)			8.97
Vested			(20,784	)			8.97
Balance, December 31, 2016			65,147			$	8.03

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

2017		$	173,136
2018			123,693
2019			67,190
2020			10,021

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