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Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Non-Vested Restricted Stock Activity

The following table summarizes the non-vested restricted stock activity for the year ended December 31, 2020:

					Time-Based								Performance-Based
					Restricted Stock								Restricted Stock
					Weighted								Weighted
	Time-Based				Average				Performance-Based				Average
	Restricted Stock				Grant Date				Restricted Stock				Grant Date
	Shares				Fair Value				Shares				Fair Value
Non-vested January 1, 2020		875,492			$	41.34				127,500			$	43.04
Granted		339,196			$	52.07				132,288			$	51.07
Vested		(311,077	)		$	43.19				(114,000	)		$	49.20
Forfeited		(111,128	)		$	43.92				(16,310	)		$	44.45
Non-vested at December 31, 2020		792,483			$	46.01				129,478			$	45.64

Schedule of Restricted Stock Granted

The following table summarizes the restricted stock granted during the respective years:

Time-based restricted stock grants	2020				2019				2018
Employees		312,855				355,579				463,818
Outside directors		26,341				32,262				37,125
Total		339,196				387,841				500,943
Weighted average grant date fair value	$	52.07			$	38.02			$	47.34
Vesting period	1-5 years				1-5 years				1-5 years

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Tabular disclosure of the changes in outstanding nonvested restricted stock units.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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

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