Annual report pursuant to Section 13 and 15(d)

Business and Summary of Significant Accounting Principles (Surcharges Reported Gross) (Details)

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Business and Summary of Significant Accounting Principles (Surcharges Reported Gross) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Taxes, Miscellaneous [Abstract]      
Surcharges reported gross $ 4,644 $ 5,401 $ 5,408