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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

Stock-Based Compensation [Abstract]

Roll-forward of outstanding restricted stock grants issued

		Shares				Weighted-Average Grant Date Price per Share
Outstanding restricted stock grants as of December 31, 2010			164,832			$	69.72
Grants issued			109,333				79.45
Grants vested			(5,176	)			78.85
Grants forfeited			(8,368	)			64.74
Outstanding restricted stock grants as of December 31, 2011			260,621			$	73.78
Grants issued			89,600				71.64
Grants vested			(12,923	)			76.87
Grants forfeited			(2,177	)			71.37
Total outstanding restricted stock grants as of September 30, 2012			335,121			$	73.11

Expense recognition of deferred compensation

2012				2013				2014				2015				2016				2017				Total
$	1,260,511			$	4,439,086			$	4,104,752			$	3,200,260			$	1,360,890			$	519,497			$	14,884,996

Summary of Company expenses attributable to the 401(k) Plan

		2012				2011
Three Months Ended		$	272,438			$	239,525
Nine Months Ended			790,159				718,967

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Schedule of expense recognition of deferred compensation arrangement.

+ References

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- Definition

Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits.

+ 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 (h)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&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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