Summary of Significant Accounting Policies Useful Lives (Details)	12 Months Ended
	Dec. 31, 2012
Land Improvements [Member]
Useful lives (in years)	21 years
Building [Member]
Useful lives (in years)	25 years
Other Machinery and Equipment [Member]
Useful lives (in years)	18 years
Equipment [Member]
Useful lives (in years)	9 years
Minimum [Member]
Useful life, minimum (in years)	5 years
Maximum [Member]
Useful life, minimum (in years)	20 years