Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Fair value of options granted

The following table summarizes the weighted-average assumptions used to compute the fair value of options granted to employees:

	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2020	2019	2020	2019
Risk-free interest rate	0.3%	2.1%	1.3%	2.5%
Expected life of options — years	3.80	3.99	3.82	3.36
Expected stock price volatility	36%	34%	25%	26%
Expected dividend yield	0.9%	0.9%	0.7%	0.8%

Stock options activity under share-based payment plans

The following table summarizes stock option activity under our share-based plans for the six months ended June 30, 2020:

	Options	Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Outstanding as of December 31, 2019	208	$	4.46
Granted	7	$	7.17
Exercised	(13)	$	3.97
Forfeited, cancelled or expired	(1)	$	6.10
Outstanding as of June 30, 2020	201	$	4.58	5.28	$	294
Exercisable as of June 30, 2020	143	$	4.07	4.47	$	265

Summary of restricted stock unit and stock award activity

The following table summarizes the restricted stock unit, including PRSU, activity under our share-based plans for the six months ended June 30, 2020:

	Shares	Grant Date Fair Value Per Share
Nonvested as of December 31, 2019	75	$	5.95
Granted	7	$	7.01
Vested	(12)	$	5.81
Forfeited	(3)	$	5.98
Nonvested as of June 30, 2020	67	$	6.08