Segment Reporting and Geographic Information Customer Reporting (Details)	3 Months Ended
	Jun. 30, 2013 Rate	Jun. 30, 2012 Rate
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	11.00%	1.70%
Major Customers Two [Domain]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	10.80%	5.30%
Major Customer Three [Domain]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	10.00%	7.10%
Major Customer Four [Domain]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	2.10%	18.40%
Major Customer Five [Domain]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	1.10%	12.50%