STATEMENTS OF CHANGES IN CONSOLIDATED SHAREHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock	Capital Surplus	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock
Beginning Balance at Dec. 31, 2011	$ 1,191,132	$ 55,057	$ 723,299	$ 697,923	$ 81,099	$ (366,246)
Total comprehensive income	29,136			46,367	(17,231)
Cash dividends ($0.205 and $0.215 per share in 2012 and 2013 respectively)	(8,312)			(8,312)
Purchase of treasury stock	(2,666)					(2,666)
Issuance of equity awards	245		(2,737)			2,982
Recognition of equity based compensation	1,712		1,712
Net tax benefit related to equity compensation plans	84		84
Sale of treasury stock	207		105			102
Exercise of stock options	1,133		514			619
Ending Balance at Mar. 31, 2012	1,212,671	55,057	722,977	735,978	63,868	(365,209)
Beginning Balance at Dec. 31, 2012	1,279,345	55,057	732,069	787,015	85,588	(380,384)
Total comprehensive income	12,925			34,941	(22,016)
Cash dividends ($0.205 and $0.215 per share in 2012 and 2013 respectively)	(8,711)			(8,711)
Purchase of treasury stock	(1,656)					(1,656)
Issuance of equity awards	449		(2,592)			3,041
Recognition of equity based compensation	1,913		1,913
Net tax benefit related to equity compensation plans	332		332
Sale of treasury stock	66		42			24
Exercise of stock options	895		445			450
Ending Balance at Mar. 31, 2013	$ 1,285,558	$ 55,057	$ 732,209	$ 813,245	$ 63,572	$ (378,525)

This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 20

-Section 55

-Paragraph 13

-URI http://asc.fasb.org/extlink&oid=6576910&loc=d3e11178-113907

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 35

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-URI http://asc.fasb.org/extlink&oid=6415241&loc=d3e4534-113899

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A91

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 20

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-URI http://asc.fasb.org/extlink&oid=6576910&loc=d3e11149-113907

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 39

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

Tax benefit associated with any equity-based compensation plan other than an employee stock ownership plan (ESOP). The tax benefit results from the deduction by the entity on its tax return for an award of stock that exceeds the cumulative compensation cost for common stock or preferred stock recognized for financial reporting. Includes any resulting tax benefit that exceeds the previously recognized deferred tax asset (excess tax benefits).

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- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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- Definition

Equity impact of cash dividends declared by an entity during the period for all classes of stock (common, preferred, etc.). This element includes paid and unpaid dividends declared during the period.

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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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- Definition

Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

+ References+ Details

- Definition

Value of stock issued as a result of the exercise of stock options.

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- Definition

Equity impact of the value of treasury stock (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding.

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- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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