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Note 11 - Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

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

		Shares				Weighted-Average Grant-Date Fair Value
Non-vested at December 31, 2017			497,322			$	22.46
Granted			280,590				28.19
Vested			(256,414	)			23.70
Forfeited			(18,840	)			25.01
Non-vested at December 31, 2018			502,658			$	24.93
Vested but unissued at December 31, 2018			241,924			$	25.10

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

(In thousands)		2018				2017				2016
Proceeds from stock options exercised		$	6			$	-			$	328
Fair value of shares received upon exercise of stock options			8				37				1,380
Tax benefit related to stock options exercised			1				39				185
Intrinsic value of stock options exercised			9				96				841

Phantom Share Units (PSUs) [Member]

Notes Tables

Share-based Compensation, Activity [Table Text Block]

Phantom Stock Plan		Shares				Fair Value
Outstanding at December 31, 2017			89,180			$	27.50
Granted			10,673				26.94
Distributions			(540	)			22.66
Outstanding at December 31, 2018			99,313			$	21.53
Vested at December 31, 2018			98,914			$	21.53

X

- Definition

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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