Debt - Parentheticals (Details)	12 Months Ended
	Dec. 31, 2013
Line Of Credit [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate	1.66%
Montgomery County Industrial Development Authority Bond [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage	5.60%
Debt Instrument Maturity Year	2018
Butler County Port Authority Bond [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage	5.26%
Debt Instrument Maturity Year	2028