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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

Following is a summary of the activity of the restricted stock:

		Three Months Ended
		March 31, 2013
		Shares			Fair Value
Balance at December 31, 2012		54,875			$	31.61
Granted		21,804			$	42.14
Vested		(18,959	)		$	30.68
Balance at March 31, 2013		57,720			$	35.90

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

Following is a summary of the activity of the Company’s SARs program for the three-month period ended March 31, 2013:

					Weighted-			Average		Aggregate
					Average			Remaining		Intrinsic
					Exercise			Contractual		Value
		Shares			Price			Term Years		(In thousands)
Outstanding at December 31, 2012		351,881			$	27.52		7.34		$	4,988
Granted		85,943			$	42.14
Exercised		(3,192	)		$	29.66
Outstanding at March 31, 2013		434,632			$	30.40		7.60		$	5,061
Exercisable at March 31, 2013		257,504			$	25.78		6.46		$	4,187

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

Following is a summary of the activity of the non-vested SARs during the three-month period ended March 31, 2013:

					Weighted-Average
		Shares			Grant Date Fair Value
Non-vested at December 31, 2012		161,294			$	31.70
Granted		85,943			$	42.14
Vested		(70,109	)		$	30.85
Non-vested at March 31, 2013		177,128			$	37.11

Schedule Of Per Share Fair Value Of Stock Appreciation Rights [Table Text Block]

Following is a summary of the activity of the non-vested SARs during the three-month period ended March 31, 2013:

					Weighted-Average
		Shares			Grant Date Fair Value
Non-vested at December 31, 2012		161,294			$	31.70
Granted		85,943			$	42.14
Vested		(70,109	)		$	30.85
Non-vested at March 31, 2013		177,128			$	37.11

Schedule of Share-based Compensation, Stock Appreciation Rights Award Activity [Table Text Block]

The Company uses the Black-Scholes pricing model to determine the fair value of the SARs at the date of grant. Following are the assumptions used to estimate the per-share fair value of SARs granted:

		Three Months Ended March 31,
		2013			2012
Risk-free interest rate		1.29	%		1.38	%
Expected life		7 yrs.			7 yrs.
Expected volatility		28.72	%		29.39	%
Expected dividend yield		1.71	%		1.84	%

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- Definition

Tabular disclosure of schedule of per share fair value of stock appreciation rights.

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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)

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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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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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+ 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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