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Employee Benefit Plans (Narrative) (Details) (Long Term Cash Incentive Plan [Member], USD $)
In Thousands, unless otherwise specified
 9 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Long Term Cash Incentive Plan [Member]
    
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]    
Deferred compensation liability   $ 606
Long-Term Cash Incentive Plan performance period 3 years 3 years
Long-Term Cash Incentive Plan beginning performance period 2013 2010
Long-Term Cash Incentive Plan ending performance period 2015 2012
Long-Term Cash Incentive Plan accrual $ 60