Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Schedule of Fair Value of Options Granted

The following table summarizes the weighted-average assumptions used to compute the fair value of options granted to employees, members of our board of directors and non-employees:

	For the Three Months Ended September 30,		For the Nine Months Ended September 30,
	2021	2020	2021	2020
Risk-free interest rate	0.5%	0.2%	0.6%	1.3%
Expected life of options — years	3.83	3.79	6.06	3.82
Expected stock price volatility	32%	34%	33%	25%
Expected dividend yield	0.9%	0.9%	1.0%	0.7%

Schedule of Stock Options Activity Under Share-based Payment Plans

The following table summarizes stock option activity under our share-based plans for the nine months ended September 30, 2021:

	Options	Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Outstanding as of December 31, 2020	184	$	4.73
Granted	54	$	6.14
Exercised	(63)	$	3.96
Forfeited, cancelled or expired	(5)	$	6.72
Outstanding as of September 30, 2021	170	$	5.40	5.85	$	144
Exercisable as of September 30, 2021	99	$	4.80	4.79	$	142

Schedule 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 nine months ended September 30, 2021:

	Shares	Grant Date Fair Value Per Share
Nonvested as of December 31, 2020	75	$	6.06
Granted	39	$	6.35
Vested	(24)	$	6.02
Forfeited	(8)	$	6.09
Nonvested as of September 30, 2021	82	$	6.21