Property Plant Equipment and Mineral Rights and Reserves (Details 1)	12 Months Ended
	Dec. 31, 2012
Building and improvements [Member] | Minimum [Member]
Range of useful lives to depreciate plant and equipment
Range of useful lives to depreciate plant and equipment	3 years
Building and improvements [Member] | Maximum [Member]
Range of useful lives to depreciate plant and equipment
Range of useful lives to depreciate plant and equipment	50 years
Machinery and equipment [Member] | Minimum [Member]
Range of useful lives to depreciate plant and equipment
Range of useful lives to depreciate plant and equipment	1 year
Machinery and equipment [Member] | Maximum [Member]
Range of useful lives to depreciate plant and equipment
Range of useful lives to depreciate plant and equipment	24 years