Hedging Hedges settled early due to 2015 ABL Restructuring (Details)	Feb. 05, 2015 USD ($)	Feb. 05, 2015 Bunker fuel forward contracts Mg	Feb. 05, 2015 Foreign Exchange Forward, Average Rate [Member] EUR (€)	Feb. 05, 2015 Foreign Exchange Put Option [Member] USD ($)	Feb. 05, 2015 Average rate collar [Member] EUR (€)	Feb. 05, 2015 Average rate collar [Member] Foreign Exchange Put Option [Member] USD ($)	Feb. 05, 2015 Average rate collar [Member] Euro call option USD ($)
Derivative [Line Items]
Settled hedge contracts, notional amount	$ 1,000,000
Settled hedged metric tons, notional amount		17,460
Bunker fuel forward contracts, contract average rate		562.92
Derivative, Notional Amount			€ 18,000,000		€ 2,000,000
Currency derivatives - Contract Average Rate/Price (in $ per EUR)				1.37		1.35	1.43