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Significant Accounting Policies, Concentrations of Credit Risk (Details) (Sales Revenue, Services, Net [Member])
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Concentration Risk [Line Items]    
Minimum threshold for reporting concentration risk (in hundredths) 10.00% 10.00%
Comcast [Member]
   
Concentration Risk [Line Items]    
Customer concentration risk (in hundredths) 57.00% 44.00%
Office Max [Member]
   
Concentration Risk [Line Items]    
Customer concentration risk (in hundredths)   12.00%
Office Depot and OfficeMax [Member]
   
Concentration Risk [Line Items]    
Customer concentration risk (in hundredths) 20.00%