Financial Instruments and Risk Management (Narrative) (Details) (USD $)	1 Months Ended	9 Months Ended		12 Months Ended	3 Months Ended				9 Months Ended
	May 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2014 Scenario, Forecast [Member]	Sep. 30, 2014 Currency. Malaystion Ringgit [Member] contract	Sep. 30, 2014 Commodity Derivative Contracts [Member]	Sep. 30, 2014 Interest Rate Swap [Member]	Sep. 30, 2014 Foreign exchange derivative contract [Member]	Sep. 30, 2013 Foreign exchange derivative contract [Member]	Sep. 30, 2014 Foreign exchange derivative contract [Member] Currency, U.S. Dollar	Sep. 30, 2013 Foreign exchange derivative contract [Member] Currency, U.S. Dollar	Sep. 30, 2013 Foreign exchange derivative contract [Member] Currency. Malaystion Ringgit [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair value of commodity derivative contracts							$ 6,200,000
Short-term derivative instruments											15,000,000	28,000,000	76,000,000
Number of open contracts						0
Reduction of income before taxes due to the impact of marking to market of derivative contracts									200,000	4,100,000
Maturities of notes payable	350,000,000
Debt instrument term		10 years
Deferred loss charged to income		2,200,000	2,200,000
Loss deferred for fair value of interest rate derivative contracts, net of tax								22,600,000
Loss deferred for fair value of interest rate derivative contracts, tax		7,900,000
Interest expense due to deferred loss on interest rate swaps expected during the remaining six months of 2014					800,000
Number of offsetting positions		$ 0		$ 0