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Shareholders' Equity (Stock Options Outstanding And Exercisable) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Number of Shares | 23,637 | 25,610 | 27,043 | 27,881
Weighted Average Exercise Price (Per Share) | $ 22.58 | $ 20.81 | $ 20.06 | $ 20.42
Weighted Average Remaining Contractual Life (Years) | 5 years 8 months 16 days |  |  |
Number of Shares | 14,601 | 9,760 | 11,680 |
Weighted Average Exercise Price (Per Share) | $ 19.45 |  |  |
Exercise Price $14.62-15.77 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Lower range | $ 14.62 |  |  |
Upper range | $ 15.77 |  |  |
Number of Shares | 5,498 |  |  |
Weighted Average Exercise Price (Per Share) | $ 15.13 |  |  |
Weighted Average Remaining Contractual Life (Years) | 6 years 2 months 9 days |  |  |
Number of Shares | 4,304 |  |  |
Weighted Average Exercise Price (Per Share) | $ 14.95 |  |  |
Weighted Average Remaining Contractual Life (Years) | 5 years 8 months 9 days |  |  |
Exercise Price $17.65-19.28 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Lower range | $ 17.65 |  |  |
Upper range | $ 19.28 |  |  |
Number of Shares | 4,921 |  |  |
Weighted Average Exercise Price (Per Share) | $ 18.27 |  |  |
Weighted Average Remaining Contractual Life (Years) | 4 years 6 months |  |  |
Number of Shares | 4,912 |  |  |
Weighted Average Exercise Price (Per Share) | $ 18.27 |  |  |
Weighted Average Remaining Contractual Life (Years) | 4 years 5 months 27 days |  |  |
Exercise Price $20.54-23.77 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Lower range | $ 20.54 |  |  |
Upper range | $ 23.77 |  |  |
Number of Shares | 4,051 |  |  |
Weighted Average Exercise Price (Per Share) | $ 22.08 |  |  |
Weighted Average Remaining Contractual Life (Years) | 5 years 8 months 12 days |  |  |
Number of Shares | 2,858 |  |  |
Weighted Average Exercise Price (Per Share) | $ 21.92 |  |  |
Weighted Average Remaining Contractual Life (Years) | 4 years 4 months 6 days |  |  |
Exercise Price $23.86-29.61 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Lower range | $ 23.86 |  |  |
Upper range | $ 29.61 |  |  |
Number of Shares | 4,979 |  |  |
Weighted Average Exercise Price (Per Share) | $ 26.57 |  |  |
Weighted Average Remaining Contractual Life (Years) | 5 years 1 month 17 days |  |  |
Number of Shares | 2,492 |  |  |
Weighted Average Exercise Price (Per Share) | $ 26.57 |  |  |
Weighted Average Remaining Contractual Life (Years) | 5 years 1 month 2 days |  |  |
Exercise Price $31.17-33.76 [Member] |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |
Lower range | $ 31.17 |  |  |
Upper range | $ 33.76 |  |  |
Number of Shares | 4,188 |  |  |
Weighted Average Exercise Price (Per Share) | $ 33.15 |  |  |
Weighted Average Remaining Contractual Life (Years) | 7 years 2 months 19 days |  |  |
Number of Shares | 35 |  |  |
Weighted Average Exercise Price (Per Share) | $ 31.17 |  |  |
Weighted Average Remaining Contractual Life (Years) | 4 years |  |  |

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + 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 weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + 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 Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, 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 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 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)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, 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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- 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 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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