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Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Estimated Fair Value of Stock Options

The fair value of each stock option granted in 2018, 2017 and 2016, was estimated on the date of grant using the following weighted-average assumptions.

		For the Year Ended December 31,
		2018				2017				2016
Dividend yield			2.4%				2.2%				2.9%
Volatility			25.4%				29.6%				33.1%
Risk-free interest rate			2.9%				1.8%				1.2%
Expected life			5.4 years				5.6 years				5.6 years
Weighted average grant date fair value		$	5.08			$	5.17			$	3.96

Option Activity under Company's Stock Option Plans

The following table presents option activity under the Company’s stock option plans as of and for the year ended December 31, 2018.

		Number of  Stock Options  Outstanding				Weighted  Average  Exercise Price				Weighted  Average  Remaining  Contractual  Term				Aggregate  Intrinsic Value
		(In thousands)								(In years)				(In thousands)
Outstanding at January 1, 2018			588			$	13.12
Granted			141				23.73
Exercised			(167	)			10.21
Forfeited or expired			(30	)			15.07
Outstanding at December 31, 2018			532			$	16.73				6.26			$	2,368
Vested or expected to vest at December 31, 2018			514			$	16.73				6.23			$	2,303
Exercisable at December 31, 2018			275			$	13.29				4.31			$	1,915

Summary of Status of Company's Non-Vested Restricted Shares

The table below summarizes activity related to the Company’s non-vested RSAs and RSUs for the year ended December 31, 2018.

		Shares				Weighted  Average Fair Value
		(In thousands)
Nonvested at January 1, 2018			376			$	16.82
Granted			424				23.84
Vested			(158	)			16.50
Forfeited			(18	)			20.57
Nonvested at December 31, 2018			624			$	21.56

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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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
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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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-SubTopic 10
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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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-Name Accounting Standards Codification
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