Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Summary of activity under the entity's stock option plans

The following table summarizes activity under our stock option plans (shares in thousands):

	Year Ended
	December 31, 2021
		Weighted-
		Average
Stock Options	Shares	Exercise Price
Outstanding at beginning of year	268	$	30.53
Granted	—	$	—
Exercised	(198)	$	28.95
Forfeited	—	$	—
Expired	—	$	—
Outstanding at end of year	70	$	34.97
Options exercisable at end of year	70

Summary information about stock options outstanding

The following table summarizes information about stock options outstanding at December 31, 2021 (shares in thousands):

	Options Outstanding and Exercisable
		Weighted-
	Number	Average
	Outstanding and	Remaining	Weighted-
	Exercisable at	Contractual	Average
Range of Exercise Prices	12/31/2021	Life (in years)	Exercise Price
$16.15 - $30.36	28	4.0	$	28.13
$36.25 - $54.38	42	5.7	$	39.44
$16.15 - $54.38	70	5.0	$	34.97

Restricted Stock

Summary of information about nonvested stock option awards and changes

The following table summarizes activity under our restricted stock plans (shares in thousands):

	Year Ended
	December 31, 2021
		Weighted
		Average Grant
Restricted Stock and Restricted Stock Units	Shares	Date Fair Value
Unvested at beginning of year	120	$	45.21
Granted	67	$	76.73
Vested	(72)	$	54.53
Forfeited	—	$	—
Unvested at end of year	115	$	57.74