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Note 14 - Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

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

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

		2013				2012				2011

Stock option and incentive plans		$	734,827			$	798,929			$	587,900
Stock purchase plan			57,452				50,831				58,519
Stock appreciation rights			-				-				49,988
		$	792,279			$	849,760			$	696,407

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

		December 31,
		2013								2012								2011
		Shares				Weighted Average Exercise Price				Shares				Weighted Average Exercise Price				Shares				Weighted Average Exercise Price

Outstanding, beginning			608,852			$	13.27				535,130			$	13.85				510,612			$	14.04
Granted			96,232				15.68				102,722				9.30				73,250				8.23
Exercised			(41,258	)			10.06				(17,876	)			9.68				(36,459	)			8.30
Forfeited			(1,320	)			10.53				(11,124	)			10.57				(12,273	)			8.28
Outstanding, ending			662,506				13.82				608,852				13.27				535,130				13.85

Exercisable, ending			419,735								391,378								355,398

Weighted average fair value per option of options granted during the period		$	5.14							$	2.79							$	2.74

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

				Options Outstanding
								Weighted								Options Exercisable
Range of Exercise Prices				Number Outstanding				Average Remaining Contractual Life				Weighted Average Exercise Price				Number Exercisable				Weighted Average Exercise Price

$7.72	to	$8.93			58,510				6.91			$	8.12				22,520			$	8.21
$9.00	to	$11.64			212,004				6.82				9.21				101,355				9.19
$13.25	to	$16.85			243,567				5.90				15.85				149,435				15.99
$17.00	to	$18.60			51,840				2.05				18.05				49,840				18.06
$18.67	to	$20.90			67,885				1.16				19.48				67,885				19.48
$21.00	to	$22.00			28,700				1.16				21.28				28,700				21.28
					662,506												419,735

Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block]

		2013				2012				2011

Shares granted			27,415				29,671				34,860
Shares purchased			27,110				31,554				36,174
Weighted average fair value per share granted		$	2.10			$	1.71			$	1.68

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

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