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Note 8 - Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 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			(248,319	)			23.68
Forfeited			(11,955	)			25.31
Non-vested at September 30, 2018			517,638			$	24.91
Vested but unissued at September 30, 2018			234,799			$	25.14

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			9,750				27.47
Forfeited			-				-
Distributions			(65	)			26.16
Outstanding at September 30, 2018			98,865			$	24.40
Vested at September 30, 2018			98,397			$	24.40

X

- Definition

Tabular disclosure for share-based compensation plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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