Significant Accounting Policies, Concentrations of Credit Risk (Details)	3 Months Ended		12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2013 Accounts Receivable [Member] Comcast [Member]	Dec. 31, 2012 Accounts Receivable [Member] Comcast [Member]	Mar. 31, 2013 Accounts Receivable [Member] Office Max [Member]	Dec. 31, 2012 Accounts Receivable [Member] Office Max [Member]	Mar. 31, 2013 Sales Revenue, Services, Net [Member] Comcast [Member]	Mar. 31, 2012 Sales Revenue, Services, Net [Member] Comcast [Member]	Mar. 31, 2012 Sales Revenue, Services, Net [Member] Office Depot [Member]	Mar. 31, 2013 Sales Revenue, Services, Net [Member] Office Max [Member]	Mar. 31, 2012 Sales Revenue, Services, Net [Member] Office Max [Member]	Mar. 31, 2012 Sales Revenue, Services, Net [Member] Staples [Member]
Concentration Risk [Line Items]
Customer concentration risk (in hundredths)		52.00%	52.00%	13.00%	10.00%	44.00%	27.00%	17.00%	12.00%	14.00%	11.00%
Minimum percentage of total revenue to be considered significant from one customer (in hundredths)	10.00%