Share-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2020

Share-Based Compensation Amounts Included in Net Income

The table below presents the amounts included in net income related to share-based compensation expense for the awards granted under the SICP for the years ended December 31, 2020, 2019 and 2018:

	For the Year Ended December 31,
	2020		2019		2018
(in thousands)
Awards to non-employee directors	$	733	$	620	$	539
Awards to key employees	4,096		3,659		2,871
Total compensation expense	4,829		4,279		3,410
Less: tax benefit	(1,254)		(1,117)		(934)
Share-based compensation amounts included in net income	$	3,575	$	3,162	$	2,476

Cash Proceeds Received and Tax Benefit from Share-based Payment Awards [Table Text Block]

The below table presents the number of shares withheld and amounts remitted to taxing authorities:

	For the Year Ended December 31,
	2020		2019		2018
(amounts except shares, in thousands)
Shares withheld to satisfy tax obligations	10,319		7,635		16,918
Amounts remitted to tax authorities to satisfy obligations	$	977	$	692	$	1,210

SICP Awards to Key Employees

Summary of Stock Activity Non-employee directors

The table below presents the summary of the stock activity for awards to key employees:

	Number of Shares	Weighted Average Fair Value
Outstanding — December 31, 2018	131,741	$	67.24
Granted (1)	88,048	92.74
Vested	(25,831)	67.08
Expired	(15,086)	69.28
Forfeited (2)	(21,055)	71.67
Outstanding — December 31, 2019	157,817	80.28
Granted	70,014	91.89
Vested	(35,651)	66.48
Expired	(5,302)	65.32
Outstanding — December 31, 2020	186,878	$	87.06