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Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of restricted share awards under LTIP

A summary of the restricted share awards for the year ended December 31, 2012 is as follows:

		Restricted Share Awards
		Performance								Total				Weighted-Average
		and Service				Service				Restricted				Grant-Date
		Required				Required				Awards				Fair Value
Nonvested as of January 1, 2012			128,567				14,078				142,645			$	37.75
Granted			41,627				4,588				46,215				60.77
Vested			(66,973	)			(7,303	)			(74,276	)			35.75
Forfeited			0				0				0				0.00
Nonvested as of December 31, 2012			103,221				11,363				114,584			$	48.33

Weighted-average Assumptions for estimating fair values

The fair values for the stock options granted in 2012, 2011 and 2010 were estimated at the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions:

		2012				2011				2010
Risk-free interest rate			1.3	%			1.4	%			2.9	%
Dividend yield			1.9	%			1.9	%			2.0	%
Expected life (years)			6				6				6
Expected volatility			47.0	%			47.1	%			43.3	%

The 1999 Stock Option Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Activity in company's plan

Activity in the Company’s 1999 Stock Option Plan for the year ended December 31, 2012 was as follows:

		Number of Shares				Weighted Average Exercise Price per Share				Weighted Average Remaining Contractual Term (Years)				Aggregate Intrinsic Value
Outstanding at January 1, 2012			49,907			$	34.39
Granted			0			$	0.00
Exercised			(17,757	)		$	22.55
Forfeited			0			$	0.00
Outstanding (vested and expected to vest) at December 31, 2012			32,150			$	40.93				4.4			$	595
Exercisable at December 31, 2012			32,150			$	40.93				4.4			$	595

Long Term Incentive Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Activity in company's plan

Activity in the Company’s LTIP plan for the year ended December 31, 2012 was as follows:

		Number of Shares				Weighted Average Exercise Price per Share				Weighted Average Remaining Contractual Term (Years)				Aggregate Intrinsic Value
Outstanding at January 1, 2012			27,000			$	48.21
Granted			8,000			$	57.28
Exercised			(1,250	)		$	52.10
Forfeited			0			$	0.00
Outstanding (vested and expected to vest) at December 31, 2012			33,750			$	50.21				8.8			$	311
Exercisable at December 31, 2012			17,375			$	46.00				8.3			$	233

X

- Definition

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

+ 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)(1)

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Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ 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)(1)

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+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)

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