Summary of Significant Accounting Policies (Narrative) (Details)	12 Months Ended
	Dec. 31, 2011 year
Summary of Significant Accounting Policies [Line Items]
Useful Life, maximum (in years)	10
Machinery and Equipment [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	3
Property, Plant and Equipment, Useful Life, Maximum	20
Building [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	20
Property, Plant and Equipment, Useful Life, Maximum	50