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Employee Benefit Plans (Fair Value and Allocation Of Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 Fair Value | Dec. 31, 2012 Fair Value | Dec. 31, 2013 Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Fair Value, Inputs, Level 3 | Dec. 31, 2012 Fair Value, Inputs, Level 3 | Dec. 31, 2013 Cash and Cash Equivalents | Dec. 31, 2012 Cash and Cash Equivalents | Dec. 31, 2013 Cash and Cash Equivalents Minimum | Dec. 31, 2012 Cash and Cash Equivalents Minimum | Dec. 31, 2013 Cash and Cash Equivalents Maximum | Dec. 31, 2012 Cash and Cash Equivalents Maximum | Dec. 31, 2013 Cash and Cash Equivalents Fair Value | Dec. 31, 2012 Cash and Cash Equivalents Fair Value | Dec. 31, 2013 Cash and Cash Equivalents Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Cash and Cash Equivalents Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Cash and Cash Equivalents Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Cash and Cash Equivalents Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Cash and Cash Equivalents Fair Value, Inputs, Level 3 | Dec. 31, 2012 Cash and Cash Equivalents Fair Value, Inputs, Level 3 | Dec. 31, 2013 Equity Securities | Dec. 31, 2012 Equity Securities | Dec. 31, 2013 Equity Securities Minimum | Dec. 31, 2012 Equity Securities Minimum | Dec. 31, 2013 Equity Securities Maximum | Dec. 31, 2012 Equity Securities Maximum | Dec. 31, 2013 Equity Securities Large capitalization Fair Value | Dec. 31, 2012 Equity Securities Large capitalization Fair Value | Dec. 31, 2013 Equity Securities Large capitalization Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Equity Securities Large capitalization Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Equity Securities Large capitalization Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Equity Securities Large capitalization Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Equity Securities Large capitalization Fair Value, Inputs, Level 3 | Dec. 31, 2012 Equity Securities Large capitalization Fair Value, Inputs, Level 3 | Dec. 31, 2013 Equity Securities Middle capitalization Fair Value | Dec. 31, 2012 Equity Securities Middle capitalization Fair Value | Dec. 31, 2013 Equity Securities Middle capitalization Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Equity Securities Middle capitalization Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Equity Securities Middle capitalization Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Equity Securities Middle capitalization Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Equity Securities Middle capitalization Fair Value, Inputs, Level 3 | Dec. 31, 2012 Equity Securities Middle capitalization Fair Value, Inputs, Level 3 | Dec. 31, 2013 Equity Securities Small capitalization Fair Value | Dec. 31, 2012 Equity Securities Small capitalization Fair Value | Dec. 31, 2013 Equity Securities Small capitalization Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Equity Securities Small capitalization Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Equity Securities Small capitalization Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Equity Securities Small capitalization Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Equity Securities Small capitalization Fair Value, Inputs, Level 3 | Dec. 31, 2012 Equity Securities Small capitalization Fair Value, Inputs, Level 3 | Dec. 31, 2013 Equity Securities International equity (developed) Fair Value | Dec. 31, 2012 Equity Securities International equity (developed) Fair Value | Dec. 31, 2013 Equity Securities International equity (developed) Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Equity Securities International equity (developed) Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Equity Securities International equity (developed) Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Equity Securities International equity (developed) Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Equity Securities International equity (developed) Fair Value, Inputs, Level 3 | Dec. 31, 2012 Equity Securities International equity (developed) Fair Value, Inputs, Level 3 | Dec. 31, 2013 Equity Securities International equity (emerging) Fair Value | Dec. 31, 2012 Equity Securities International equity (emerging) Fair Value | Dec. 31, 2013 Equity Securities International equity (emerging) Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Equity Securities International equity (emerging) Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Equity Securities International equity (emerging) Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Equity Securities International equity (emerging) Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Equity Securities International equity (emerging) Fair Value, Inputs, Level 3 | Dec. 31, 2012 Equity Securities International equity (emerging) Fair Value, Inputs, Level 3 | Dec. 31, 2013 Fixed Income Investments | Dec. 31, 2012 Fixed Income Investments | Dec. 31, 2013 Fixed Income Investments Minimum | Dec. 31, 2012 Fixed Income Investments Minimum | Dec. 31, 2013 Fixed Income Investments Maximum | Dec. 31, 2012 Fixed Income Investments Maximum | Dec. 31, 2013 Fixed Income Investments Investment grade bonds Fair Value | Dec. 31, 2012 Fixed Income Investments Investment grade bonds Fair Value | Dec. 31, 2013 Fixed Income Investments Investment grade bonds Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Fixed Income Investments Investment grade bonds Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Fixed Income Investments Investment grade bonds Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Fixed Income Investments Investment grade bonds Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Fixed Income Investments Investment grade bonds Fair Value, Inputs, Level 3 | Dec. 31, 2012 Fixed Income Investments Investment grade bonds Fair Value, Inputs, Level 3 | Dec. 31, 2013 Fixed Income Investments Intermediate bonds Fair Value | Dec. 31, 2012 Fixed Income Investments Intermediate bonds Fair Value | Dec. 31, 2013 Fixed Income Investments Intermediate bonds Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Fixed Income Investments Intermediate bonds Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Fixed Income Investments Intermediate bonds Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Fixed Income Investments Intermediate bonds Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Fixed Income Investments Intermediate bonds Fair Value, Inputs, Level 3 | Dec. 31, 2012 Fixed Income Investments Intermediate bonds Fair Value, Inputs, Level 3 | Dec. 31, 2013 Fixed Income Investments High-yield corporate bonds Fair Value | Dec. 31, 2012 Fixed Income Investments High-yield corporate bonds Fair Value | Dec. 31, 2013 Fixed Income Investments High-yield corporate bonds Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Fixed Income Investments High-yield corporate bonds Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Fixed Income Investments High-yield corporate bonds Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Fixed Income Investments High-yield corporate bonds Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Fixed Income Investments High-yield corporate bonds Fair Value, Inputs, Level 3 | Dec. 31, 2012 Fixed Income Investments High-yield corporate bonds Fair Value, Inputs, Level 3 | Dec. 31, 2013 Fixed Income Investments U. S. Treasury Fair Value | Dec. 31, 2012 Fixed Income Investments U. S. Treasury Fair Value | Dec. 31, 2013 Fixed Income Investments U. S. Treasury Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Fixed Income Investments U. S. Treasury Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Fixed Income Investments U. S. Treasury Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Fixed Income Investments U. S. Treasury Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Fixed Income Investments U. S. Treasury Fair Value, Inputs, Level 3 | Dec. 31, 2012 Fixed Income Investments U. S. Treasury Fair Value, Inputs, Level 3 | Dec. 31, 2013 Fixed Income Investments International emerging bond Fair Value | Dec. 31, 2012 Fixed Income Investments International emerging bond Fair Value | Dec. 31, 2013 Fixed Income Investments International emerging bond Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Fixed Income Investments International emerging bond Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Fixed Income Investments International emerging bond Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Fixed Income Investments International emerging bond Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Fixed Income Investments International emerging bond Fair Value, Inputs, Level 3 | Dec. 31, 2012 Fixed Income Investments International emerging bond Fair Value, Inputs, Level 3 | Dec. 31, 2013 Alternative investments | Dec. 31, 2012 Alternative investments | Dec. 31, 2013 Alternative investments Minimum | Dec. 31, 2012 Alternative investments Minimum | Dec. 31, 2013 Alternative investments Maximum | Dec. 31, 2012 Alternative investments Maximum | Dec. 31, 2013 Alternative investments Commodities Investment Fair Value | Dec. 31, 2012 Alternative investments Commodities Investment Fair Value | Dec. 31, 2013 Alternative investments Commodities Investment Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Alternative investments Commodities Investment Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Alternative investments Commodities Investment Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Alternative investments Commodities Investment Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Alternative investments Commodities Investment Fair Value, Inputs, Level 3 | Dec. 31, 2012 Alternative investments Commodities Investment Fair Value, Inputs, Level 3 | Dec. 31, 2013 Alternative investments Hedge Funds Fair Value | Dec. 31, 2012 Alternative investments Hedge Funds Fair Value | Dec. 31, 2013 Alternative investments Hedge Funds Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2012 Alternative investments Hedge Funds Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs) | Dec. 31, 2013 Alternative investments Hedge Funds Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2012 Alternative investments Hedge Funds Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs) | Dec. 31, 2013 Alternative investments Hedge Funds Fair Value, Inputs, Level 3 | Dec. 31, 2012 Alternative investments Hedge Funds Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan assets | $ 524,017 | $ 463,005 | $ 429,505 | $ 524,017 | $ 463,005 | $ 380,540 | $ 304,132 | $ 143,477 | $ 158,873 | $ 0 | $ 0 |  |  |  |  |  |  | $ 2,517 | $ 3,088 | $ 2,517 | $ 3,088 | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |  |  |  | $ 218,023 | $ 172,512 | $ 218,023 | $ 172,512 | $ 0 | $ 0 | $ 0 | $ 0 | $ 10,724 | $ 21,451 | $ 10,724 | $ 21,451 | $ 0 | $ 0 | $ 0 | $ 0 | $ 43,928 | $ 31,053 | $ 43,928 | $ 31,053 | $ 0 | $ 0 | $ 0 | $ 0 | $ 10,535 | $ 9,537 | $ 10,535 | $ 9,537 | $ 0 | $ 0 | $ 0 | $ 0 | $ 40,643 | $ 24,276 | $ 40,643 | $ 24,276 | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |  |  |  | $ 74,501 | $ 71,986 | $ 0 | $ 0 | $ 74,501 | $ 71,986 | $ 0 | $ 0 | $ 48,746 | $ 59,052 | $ 0 | $ 0 | $ 48,746 | $ 59,052 | $ 0 | $ 0 | $ 10,111 | $ 18,487 | $ 0 | $ 0 | $ 10,111 | $ 18,487 | $ 0 | $ 0 | $ 4,395 | $ 7,613 | $ 4,395 | $ 7,613 | $ 0 | $ 0 | $ 0 | $ 0 | $ 10,119 | $ 9,348 | $ 0 | $ 0 | $ 10,119 | $ 9,348 | $ 0 | $ 0 |  |  |  |  |  |  | $ 19,014 | $ 17,376 | $ 19,014 | $ 17,376 | $ 0 | $ 0 | $ 0 | $ 0 | $ 30,761 | $ 17,226 | $ 30,761 | $ 17,226 |  |  | $ 0 | $ 0
Cash and equivalents Target Allocation |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% | 0.00% | 1.00% | 1.00% |  |  |  |  |  |  |  |  |  |  | 55.00% | 55.00% | 65.00% | 65.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% | 36.00% | 40.00% | 44.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% | 0.00% | 10.00% | 8.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and equivalents Actual % of Plan Assets | 100.00% | 100.00% |  |  |  |  |  |  |  |  |  | 1.00% | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  | 62.00% | 56.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 28.00% | 36.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% | 8.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 + Details
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- Definition Target allocation of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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