Note 6 - Equity Incentive Plans (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

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

	September 30, 2020				September 30, 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		43,833		55.72		17,833		51.16
Exercised		15,477		36.90		13,278		35.51
Forfeited or expired		5,200		39.69		—		—
Outstanding at end of period		296,195	$	43.59		282,375	$	41.02
Options and SARs exercisable at September 30		156,700	$	40.81		126,201	$	39.88