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Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2018

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, 2018:

					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, 2018		875,326			$	38.88				-			$	-
Granted		500,943			$	47.34				89,143			$	49.20
Vested		(272,877)			$	38.42				-			$	-
Forfeited		(139,923)			$	41.91				(16,143)			$	49.20
Non-vested at December 31, 2018		963,469			$	42.98				73,000			$	49.20

Schedule of Restricted Stock Granted

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

Time-based restricted stock grants	2018				2017				2016
Employees		463,818				396,708				394,243
Outside directors		37,125				31,625				26,125
Total		500,943				428,333				420,368
Weighted average grant date fair value	$	47.34			$	43.31			$	33.46
Vesting period	1-5 years				1-5 years				3-5 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=109197908&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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