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Stock-Based Compensation and Stock Awards (Tables)

12 Months Ended

Dec. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Option activity for the year ended December 31, 2019 was as follows:

	Number of Options			Weighted Average Price		Aggregate Intrinsic Value (in millions)		Weighted Average Remaining Contractual Life (in years)
Outstanding at December 31, 2018		224,087		$	63.57
Exercised		(47,712	)		48.77
Forfeited		(44,000	)		66.74
Outstanding at December 31, 2019		132,375		$	67.85		-		1.4

Exercisable at year-end		132,375		$	67.85		-		1.4

Summary of RSA Activity

The Company’s RSA activity and related information is presented below:

	Restricted Stock			Weighted- average Grant Date Fair Value
Unvested at December 31, 2018		403,179		$	43.18
Granted		186,730			44.35
Vested		(218,180	)		44.22
Forfeited		(23,039	)		43.08
Nonvested at December 31, 2019		348,690		$	43.16

Schedule of Valuation Assumptions

Assumptions used in the Monte Carlo simulation are as follows:

	2019		2018
Grant date	October 28, 2019		October 28, 2018
Performance period	October 1, 2019 to September 30, 2022		October 1, 2018 to September 30, 2021
Volatility	38.8%		32.6%
Risk-free interest rate	1.7%		2.9%
Grant date price	$	44.53	$	43.09

Summary of PSA Activity

The Company’s Performance Unit activity and related information is presented below:

	Number of Performance Units			Weighted Average Grant Date Fair Value Per Unit
Nonvested balance at December 31, 2018		288,093		$	54.22
Granted		183,471			48.47
Vested		(203,014	)		53.46
Nonvested balance at December 31, 2019		268,550		$	52.81

Schedule of DSA Activity

The Company's DSA activity for the year ended December 31, 2019 is presented below:

	DSA Number of Shares			Weighted Average Grant Date Fair Value Per Share
Nonvested balance at December 31, 2018		18,879		$	49.93
Granted		26,781			43.29
Vested		(9,340	)		51.58
Nonvested balance at December 31, 2019		36,320		$	44.61

Schedule of Information for Stock Option Plans

Equity Compensation Plan Information

The following table summarizes information for equity compensation plans in effect as of December 31, 2019 :

	Number of securities to be issued upon exercise of outstanding options, warrants and rights ⁽¹⁾		Weighted- average exercise price of outstanding options, warrants and rights ⁽²⁾		Number of securities remaining available for future issuance under equity compensation plan
Plan category	(a)		(b)		(c)
Equity compensation plans approved by stockholders		400,925	$	67.85		597,780
Equity compensation plans not approved by stockholders		-		-		-
Total		400,925	$	67.85		597,780

⁽¹⁾

^{Excludes 385,010 shares of unvested RSAs and DSAs, which were granted pursuant to the 2017 Plan and the 2004 Plan. Includes 268,550 unvested Performance Units shown at 100% level of performance achievement.}

⁽²⁾

^{The weighted average exercise price does not take into account 268,550 unvested Performance Units, which do not have an exercise price.}