Quarterly report pursuant to Section 13 or 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
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Taxes, Miscellaneous [Abstract]        
Surcharges reported gross $ 990 $ 1,116 $ 3,224 $ 3,549