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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

Stock-Based Compensation [Abstract]

Summary of the activity under stock option plan

		Options				Wgtd. Avg. Exercise Price				Wgtd. Avg. Remaining Contractual Term				Aggregate Intrinsic Value
		(Dollars in thousands, except per share data)
Nine Months Ended September 30, 2012
Outstanding at December 31, 2011			1,298,431			$	30.14
Options granted			—				—
Options exercised			(88,610	)			17.11
Options canceled, forfeited or expired			—				—
Outstanding at September 30, 2012			1,209,821				31.10				8.40	Yrs		$	14,354
Exercisable at September 30, 2012			655,871				25.03				5.27	Yrs		$	11,764

Non-vested options and changes

		Options
Non-vested at December 31, 2011			591,700
Options granted			—
Options vested			(37,750	)
Options forfeited			—
Non-vested at September 30, 2012			553,950

Options granted and options exercised under stock option plan

		Three Months Ended September 30,								Nine Months Ended September 30,
		2012				2011				2012				2011
		(Dollars in thousands, except per share data)
Weighted average grant-date fair value per share of options granted		$	—			$	12.11			$	—			$	12.46
Total intrinsic value of options exercised			1,947				264				3,696				669
Cash received from options exercised			794				263				1,516				701
Tax benefit realized from options exercised			753				102				1,430				259

Stock-based employee compensation expense

		Three Months  Ended September 30,								Nine Months Ended September 30,
		2012				2011				2012				2011
		(Dollars in thousands)
Stock-based compensation expense		$	391			$	371			$	1,189			$	1,017
Tax			(151	)			(144	)			(460	)			(394	)
Stock-based compensation expense, net of tax		$	240			$	227			$	729			$	623

Remaining fair value of stock options

		September 30, 2012
		(Dollars in thousands)
Fair value of stock options		$	5,340

Assumptions used for computing stock-based employee compensation expense

		Nine Months Ended September 30,
		2012				2011
Risk-free interest rate			1.74	%			3.32	%
Dividend yield			2.00	%			2.00	%
Stock price volatility			32.88	%			28.86	%
Expected term			10	Yrs			10	Yrs

X

- Definition

Tabular disclosure of the changes in outstanding nonvested performance-based 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=6415400&loc=d3e5070-113901

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Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value.

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- Definition

Tabular disclosure of the total intrinsic value of options exercised (or share units converted), share-based liabilities paid, and the total fair value of shares vested 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 (d)(2)

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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

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-Publisher FASB

-Name Accounting Standards Codification

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

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-Topic 718

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Tabular disclosure of the weighted-average grant-date fair value of equity options or other equity instruments granted during the year.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-Section 50

-Paragraph 2

-Subparagraph (d)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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