Summary of Significant Accounting Policies (Details 5)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Customer A
Concentration of Credit Risk
Customer, percent of revenues	32.00%	34.00%
Customer, percent of accounts receivable	42.00%	56.00%
Customer B
Concentration of Credit Risk
Customer, percent of revenues	16.00%	0.00%
Customer, percent of accounts receivable	10.00%	0.00%
Customer C
Concentration of Credit Risk
Customer, percent of revenues	11.00%	17.00%
Customer, percent of accounts receivable	5.00%	12.00%
Customer D
Concentration of Credit Risk
Customer, percent of revenues	11.00%	10.00%
Customer, percent of accounts receivable	16.00%	8.00%
Vendor A
Concentration of Credit Risk
Vendor, percent of purchases	69.00%	38.00%
Vendor, percent of accounts payable	32.00%	31.00%
Vendor B
Concentration of Credit Risk
Vendor, percent of purchases	14.00%	18.00%
Vendor, percent of accounts payable	6.00%	8.00%