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Retirement Benefits (Fair Value Of Plan Assets) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets $ 6,762 $ 7,030
Level 1 [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 5,596 2,832
Level 2 [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 1,166 4,198
Common / Collective Trusts - Fixed Income [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 1,166 [1] 2,514 [1]
Common / Collective Trusts - Fixed Income [Member] | Level 2 [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 1,166 [1] 2,514 [1]
Mutual Funds - Fixed Income [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 2,354  
Mutual Funds - Fixed Income [Member] | Level 1 [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 2,354  
Cash Equivalents - Money Market [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 3,242  
Cash Equivalents - Money Market [Member] | Level 1 [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 3,242  
Large-Cap Core [Member] | Common / Collective Trusts - Equity [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   778 [2]
Large-Cap Core [Member] | Common / Collective Trusts - Equity [Member] | Level 2 [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   778 [2]
Large-Cap Value [Member] | Equity Investments-Mutual Funds [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Number of stocks 150  
Fair value of plan assets   664 [3]
Large-Cap Value [Member] | Equity Investments-Mutual Funds [Member] | Level 1 [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   664 [3]
Large-Cap Value [Member] | Common / Collective Trusts - Equity [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   389 [4]
Large-Cap Value [Member] | Common / Collective Trusts - Equity [Member] | Level 2 [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   389 [4]
Small-Cap Core [Member] | Equity Investments-Mutual Funds [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   869 [5]
Small-Cap Core [Member] | Equity Investments-Mutual Funds [Member] | Level 1 [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   869 [5]
Large-Cap Growth [Member] | Equity Investments-Mutual Funds [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   490 [6]
Large-Cap Growth [Member] | Equity Investments-Mutual Funds [Member] | Level 1 [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   490 [6]
Large-Cap Growth [Member] | Common / Collective Trusts - Equity [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   517 [7]
Large-Cap Growth [Member] | Common / Collective Trusts - Equity [Member] | Level 2 [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   517 [7]
International Core [Member] | Equity Investments-Mutual Funds [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   809 [8]
International Core [Member] | Equity Investments-Mutual Funds [Member] | Level 1 [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets   $ 809 [8]
Minimum [Member] | Large-Cap Value [Member] | Common / Collective Trusts - Equity [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Number of stocks 60  
Minimum [Member] | Small-Cap Core [Member] | Equity Investments-Mutual Funds [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Number of stocks 150  
Minimum [Member] | Large-Cap Growth [Member] | Equity Investments-Mutual Funds [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Number of stocks 60  
Minimum [Member] | Large-Cap Growth [Member] | Common / Collective Trusts - Equity [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Number of stocks 35  
Maximum [Member] | Large-Cap Value [Member] | Common / Collective Trusts - Equity [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Number of stocks 70  
Maximum [Member] | Large-Cap Growth [Member] | Equity Investments-Mutual Funds [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Number of stocks 90  
Maximum [Member] | Large-Cap Growth [Member] | Common / Collective Trusts - Equity [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Number of stocks 55  
[1] This category consists of an index fund that tracks the Barclays Capital U.S. Aggregate Bond Index. The fund invests in Treasury, agency, corporate, mortgage-backed and asset-backed securities.
[2] This fund tracks the performance of the S&P 500 Index by purchasing the securities represented in the Index in approximately the same weightings as the Index.
[3] This category consists of investments whose sector and industry exposures are maintained within a narrow band around Russell 1000 index. The portfolio holds approximately 150 stocks.
[4] This category contains large-cap stocks with above-average yield. The portfolio typically holds between 60 and 70 stocks.
[5] This category contains stocks whose sector weightings are maintained within a narrow band around those of the Russell 2000 index. The portfolio will typically hold more than 150 stocks.
[6] This category consists of a mutual fund that seeks fast growth large-cap companies with sustainable franchises and positive price momentum. The portfolio holds 60- 90 stocks.
[7] This category consists of a portfolio of between 35 and 55 stocks of fast-growing, predictable and cyclical large cap growth companies.
[8] This category has investments in medium to large non-U.S. companies, including high quality, durable growth companies and companies based in countries with stable economic and political systems.