Stock Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement, Noncash Expense [Abstract]

Stock Compensation Expense by Plan Type

Our stock compensation expense is presented below ($000's omitted):

	2020		2019		2018
RSUs and performance shares	$	22,065	$	21,538	$	20,145
Long-term incentive plans	10,778		6,830		8,145
	$	32,843	$	28,368	$	28,290

Stock Option Activity Rollforward

A summary of stock option activity is presented below (000’s omitted, except per share data):

	2020			2019			2018
	Shares	Weighted- Average Per Share Exercise  Price		Shares	Weighted- Average Per Share Exercise  Price		Shares	Weighted- Average Per Share Exercise  Price
Outstanding, beginning of year	16	$	8	563	$	12	1,168	$	11
Granted	—	—		—	—		—	—
Exercised	(15)	8		(547)	12		(605)	11
Forfeited	—	—		—	—		—	—
Outstanding, end of year	1	$	8	16	$	8	563	$	12
Options exercisable at year end	1	$	8	16	$	8	563	$	12

Restricted Stock, RSUs, and Performance Shares Activity Rollforward

A summary of RSUs and performance shares is presented below (000’s omitted, except per share data): 

	2020			2019			2018
	Shares	Weighted- Average Per Share Grant Date Fair Value		Shares	Weighted- Average Per Share Grant Date Fair Value		Shares	Weighted- Average Per Share Grant Date Fair Value
Outstanding, beginning of year	2,681	$	26	3,074	$	23	3,271	$	19
Granted	625	43		932	27		833	31
Distributed	(952)	21		(1,181)	17		(786)	22
Forfeited	(169)	33		(144)	26		(244)	22
Outstanding, end of year	2,185	$	32	2,681	$	26	3,074	$	23
Vested, end of year	184	$	24	153	$	20	129	$	21