Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details 2)	12 Months Ended
	Dec. 31, 2011 Year
Revenue sharing programs [Member]
Schedule of Useful Lives [Line Items]
Finite-Lived Intangible Assets, Useful Life, Maximum	30
Buildings [Member]
Schedule of Useful Lives [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	20
Property, Plant and Equipment, Useful Life, Maximum	50
Computer equipment [Member]
Schedule of Useful Lives [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	3
Property, Plant and Equipment, Useful Life, Maximum	5
Machinery and equipment [Member]
Schedule of Useful Lives [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	4
Property, Plant and Equipment, Useful Life, Maximum	12
Furnaces and boilers [Member]
Schedule of Useful Lives [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	12
Property, Plant and Equipment, Useful Life, Maximum	17