Segment Reporting and Geographic Information Customer Reporting (Details)	3 Months Ended
	Mar. 31, 2013 Rate	Mar. 31, 2012 Rate
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	18.50%	0.00%
Major Customers Two [Domain]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	6.50%	10.40%
Major Customer Three [Domain]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	3.40%	30.70%