Summary of Significant Accounting Policies (Details 4)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Customer A
Concentration of Credit Risk
Customer, percent of revenues	31.00%	30.00%
Customer, percent of accounts receivable	48.00%	38.00%
Customer B
Concentration of Credit Risk
Customer, percent of revenues	14.00%	11.00%
Customer, percent of accounts receivable	16.00%	12.00%
Customer C
Concentration of Credit Risk
Customer, percent of revenues	11.00%	15.00%
Customer, percent of accounts receivable	1.00%	9.00%
Vendor A
Concentration of Credit Risk
Vendor, percent of purchases	62.00%	46.00%
Vendor, percent of accounts payable	43.00%	42.00%
Vendor B
Concentration of Credit Risk
Vendor, percent of purchases	11.00%	18.00%
Vendor, percent of accounts payable	0.00%	12.00%