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Earnings Per Common Share And Share Awards (Summary Of Information Of Fixed Stock Options) (Details) (USD $) | 12 Months Ended
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Dec. 31, 2012
$20.00 - $27.96 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Options exercise price, lower limit | $ 20.00
Options exercise price, upper limit | $ 27.96
Options Outstanding - Number Outstanding | 2,400
Options Outstanding - Weighted Average Remaining Contractual Life | 9 months 4 days
Options Outstanding - Weighted Average Exercise Price | $ 25.54
Options Exercisable - Number Exercisable | 2,400
Options Exercisable - Weighted Average Exercise Price | $ 25.54
$27.98 - $31.99 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Options exercise price, lower limit | $ 27.98
Options exercise price, upper limit | $ 31.99
Options Outstanding - Number Outstanding | 750
Options Outstanding - Weighted Average Remaining Contractual Life | 1 year 26 days
Options Outstanding - Weighted Average Exercise Price | $ 31.20
Options Exercisable - Number Exercisable | 500
Options Exercisable - Weighted Average Exercise Price | $ 31.27
$33.32 - $36.79 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Options exercise price, lower limit | $ 33.32
Options exercise price, upper limit | $ 36.79
Options Outstanding - Number Outstanding | 2,000
Options Outstanding - Weighted Average Remaining Contractual Life | 2 years 4 months 17 days
Options Outstanding - Weighted Average Exercise Price | $ 36.79
Options Exercisable - Number Exercisable | 2,000
Options Exercisable - Weighted Average Exercise Price | $ 36.79
$10.00 - $36.79 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Options exercise price, lower limit | $ 10.00
Options exercise price, upper limit | $ 36.79
Options Outstanding - Number Outstanding | 5,150
Options Outstanding - Weighted Average Remaining Contractual Life | 1 year 5 months 5 days
Options Outstanding - Weighted Average Exercise Price | $ 30.73
Options Exercisable - Number Exercisable | 4,900
Options Exercisable - Weighted Average Exercise Price | $ 30.72
$27.97 - $27.97 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
SAR exercise price, lower limit | $ 27.97
SAR exercise price, upper limit | $ 27.97
SARs Outstanding - Number Outstanding | 75,000
SARs Outstanding - Weighted Average Remaining Contractual Life | 3 years 2 months 1 day
SARs Outstanding - Weighted Average Exercise Price | $ 27.97
SARs Exercisable - Number Exercisable | 75,000
SARs Exercisable - Weighted Average Exercise Price | $ 27.97
$32.00 - $32.00 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
SAR exercise price, lower limit | $ 32.00
SAR exercise price, upper limit | $ 32.00
SARs Outstanding - Number Outstanding | 2,500
SARs Outstanding - Weighted Average Remaining Contractual Life | 3 years 4 months 21 days
SARs Outstanding - Weighted Average Exercise Price | $ 32.00
SARs Exercisable - Number Exercisable | 2,500
SARs Exercisable - Weighted Average Exercise Price | $ 32.00
$33.31 - $33.31 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
SAR exercise price, lower limit | $ 33.31
SAR exercise price, upper limit | $ 33.31
SARs Outstanding - Number Outstanding | 3,000
SARs Outstanding - Weighted Average Remaining Contractual Life | 4 years 4 months 17 days
SARs Outstanding - Weighted Average Exercise Price | $ 33.31
SARs Exercisable - Number Exercisable | 3,000
SARs Exercisable - Weighted Average Exercise Price | $ 33.31
$36.80 - $58.59 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
SAR exercise price, lower limit | $ 36.80
SAR exercise price, upper limit | $ 58.59
SARs Outstanding - Number Outstanding | 12,500
SARs Outstanding - Weighted Average Remaining Contractual Life | 3 years 6 months 29 days
SARs Outstanding - Weighted Average Exercise Price | $ 46.51
SARs Exercisable - Number Exercisable | 11,750
SARs Exercisable - Weighted Average Exercise Price | $ 46.25
$27.97 - $49.04 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
SAR exercise price, lower limit | $ 27.97
SAR exercise price, upper limit | $ 49.04
SARs Outstanding - Number Outstanding | 93,000
SARs Outstanding - Weighted Average Remaining Contractual Life | 3 years 3 months 7 days
SARs Outstanding - Weighted Average Exercise Price | $ 30.74
SARs Exercisable - Number Exercisable | 92,250
SARs Exercisable - Weighted Average Exercise Price | $ 30.58

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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(c) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(a, 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. + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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