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Note 8 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2017

Notes Tables

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

						Weighted-Average
						Grant-Date
		Shares				Fair Value
Non-vested at December 31, 2016			488,779			$	18.99
Granted			276,900				28.21
Vested			(244,272	)			21.93
Forfeited			(21,360	)			23.30
Non-vested at June 30, 2017			500,047			$	22.48
Vested but unissued at June 30, 2017			270,017			$	22.33

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

		For the three months ended								For the six months ended
		June 30,								June 30,
(In thousands)		2017				2016				2017				2016
Proceeds from stock options exercised		$	-			$	109			$	-			$	127
Fair value of shares received upon exercise of stock options			37				22				37				350
Tax benefit (expense) related to stock options exercised			39				14				39				(2	)
Intrinsic value of stock options exercised			96				69				96				112

Phantom Share Units (PSUs) [Member]

Notes Tables

Share-based Compensation, Activity [Table Text Block]

Phantom Stock Plan		Shares				Fair Value
Outstanding at December 31, 2016			89,339			$	29.39
Granted			7,356				27.25
Forfeited			(10	)			28.95
Distributions			(206	)			28.93
Outstanding at June 30, 2017			96,479			$	28.19
Vested at June 30, 2017			96,146			$	28.19

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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