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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 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, 2011			260,621			$	73.78
Grants issued			107,600				75.64
Grants vested			(46,056	)			75.22
Grants forfeited			(2,177	)			71.37
Total outstanding restricted stock grants as of December 31, 2012			319,988			$	74.22

Expense recognition of deferred compensation

2013				2014				2015				2016				2017				Total
$	4,666,887			$	4,349,048			$	3,444,556			$	1,605,186			$	763,793			$	14,829,470

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

2012				2011				2010
$	1,044,255			$	960,888			$	897,843

Summary of warrant transactions

		Warrants
						Weighted Average
		Shares				Exercise Price
Oustanding December 31, 2009			6,000			$	10.42
Exercisable December 31, 2009			6,000			$	10.42
Granted			—				—
Expired / Forfeited			4,000				10.00
Exercised			2,000				11.25
Oustanding December 31, 2010			—			$	—
Exercisable December 31, 2010			—			$	—

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Schedule of expense recognition of deferred compensation arrangement.

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- Definition

Share based compensation arrangement by share based payment award non option equity instrument activity.

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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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