Note 8 - Equity Incentive Plan (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Share-based Payment Arrangement, Option, Activity [Table Text Block]

	March 31, 2020				March 31, 2019
	Shares		Weighted Average Exercise Price		Shares		Weighted Average Exercise Price
Options and SARs outstanding at beginning of period		273,039	$	41.19		277,820	$	40.11
Granted		—		—		—		—
Exercised		7,654		33.82		9,013		35.13
Forfeited or expired		4,300		39.46		—		—
Outstanding at end of period		261,085	$	41.43		268,807	$	40.28
Options and SARs exercisable at March 31		142,692	$	40.40		109,897	$	39.44