Commitments and Contingencies (Details 3)	12 Months Ended
	Dec. 31, 2014 item	Dec. 31, 2013	Dec. 31, 2012
Accounts Receivable | Credit Concentration Risk | Top Ten Customers
Concentration of Credit Risk
Number of top customers	10
Percentage of total accounts receivable from top customers	65.00%	69.00%
Accounts Receivable | Credit Concentration Risk | Customer B
Concentration of Credit Risk
Concentration Risk (as a percent)	20.00%	10.00%
Accounts Receivable | Credit Concentration Risk | Customer C
Concentration of Credit Risk
Concentration Risk (as a percent)	13.00%	11.00%
Accounts Receivable | Credit Concentration Risk | Customer D
Concentration of Credit Risk
Concentration Risk (as a percent)		23.00%
Net Sales | Customer Concentration Risk | Customer A
Concentration of Credit Risk
Concentration Risk (as a percent)	15.00%
Net Sales | Customer Concentration Risk | Customer B
Concentration of Credit Risk
Concentration Risk (as a percent)	11.00%	14.00%
Net Sales | Customer Concentration Risk | Customer D
Concentration of Credit Risk
Concentration Risk (as a percent)			14.00%