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Short-Term and Long-Term Debt (Term Note) (Details) (Stand-By Term Note, Rbs Citizens [Member], USD $)
9 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Oct. 08, 2010
Stand-By Term Note | Rbs Citizens [Member]
     
Debt Instrument [Line Items]      
Line of credit, maximum borrowing amount     $ 450,000
Debt instrument, monthly principal payment 887    
Debt instrument, maturity date 5 years    
Credit facility, amount outstanding $ 43,481 $ 51,467