Segments, Major Customers (Details)	3 Months Ended
	Mar. 31, 2012 Customer Concentration Risk [Member]	Mar. 31, 2011 Customer Concentration Risk [Member] Customer	Mar. 31, 2012 Property, Plant, and Equipment [Member] Geographic Concentration Risk [Member] UNITED STATES	Dec. 31, 2011 Property, Plant, and Equipment [Member] Geographic Concentration Risk [Member] UNITED STATES
Concentration Risk [Line Items]
Major Customers Revenues As Percentage Of Net Revenues	15.30%
Number of Customers Accounting for Ten Percent or More of Net Revenues		0
Concentration Risk, Percentage			80.00%	80.00%