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Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2020

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 and members of our board of directors:

															For the Years Ended December 31,
															2020						2019						2018
Risk-free interest rate															1.0%						2.4%						2.7%
Expected life of options — years															3.91						3.41						4.38
Expected stock price volatility															28%						26%						23%
Expected dividend yield															0.8%						0.8%						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 years ended December 31, 2020, 2019 and 2018:

			Options						Weighted- Average Exercise Price Per Share						Weighted- Average Remaining Contractual Term (Years)						Aggregate Intrinsic Value
Outstanding at the beginning of January 1, 2018			280						$	3.76
Granted			32						$	6.59
Exercised			(65)						$	3.35
Forfeited, cancelled or expired			(4)						$	4.76
Outstanding as of December 31, 2018			243						$	4.22
Awards granted in connection with acquisition			7						$	3.85
Granted			15						$	6.10
Exercised			(53)						$	3.65
Forfeited, cancelled or expired			(4)						$	5.58
Outstanding as of December 31, 2019			208						$	4.46
Granted			11						$	6.87
Exercised			(33)						$	3.66
Forfeited, cancelled or expired			(2)						$	6.28
Outstanding as of December 31, 2020			184						$	4.73					4.80						$	318
Exercisable as of December 31, 2020			147						$	4.31					3.96						$	309

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 years ended December 31, 2020, 2019 and 2018:

			Shares						Grant Date Fair Value Per Share
Nonvested at the beginning of January 1, 2018			31						$	4.54
Granted			18						$	6.40
Vested			(13)						$	4.43
Forfeited			(1)						$	4.99
Nonvested as of December 31, 2018			35						$	5.50
Awards granted in connection with acquisition			48						$	5.83
Granted			38						$	6.01
Vested			(38)						$	5.53
Forfeited			(8)						$	5.85
Nonvested as of December 31, 2019			75						$	5.95
Granted			37						$	6.14
Vested			(32)						$	5.89
Forfeited			(5)						$	6.00
Nonvested as of December 31, 2020			75						$	6.06

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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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