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Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2017

Stockholders' Equity Note [Abstract]

Restricted share activity

Restricted stock awards (RSAs), performance stock awards (PSAs) and performance stock units (PSUs) activity for the nine months ended September 30, 2017 is summarized below:

	Restricted Stock Awards			Performance Stock Awards			Performance Stock Units			Total			Weighted Average Grant Date Fair Value
Unvested balance, December 31, 2016	577,244			345,656			—			922,900			$	58.15
Granted	386,273			—			231,100			617,373			57.16
Vested	(391,680	)		(260,894	)		(139,272	)		(791,846	)		57.78
Forfeited	(69,346	)		—			—			(69,346	)		54.37
Unvested balance, September 30, 2017	502,491			84,762			91,828			679,081			57.61

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- References

No definition available.

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