Supply Chain Financing	3 Months Ended
Mar. 31, 2014
Supply Chain Financing [Abstract]
Supply Chain Financing	Supply Chain Financing We have a supply chain financing arrangement with a financing party. Under this arrangement, we essentially assign our rights to purchase needle coke from a supplier to the financing party. The financing party purchases the product from a supplier under the supplier's standard payment terms and then immediately resells it to us under longer payment terms. The financing party pays the supplier the purchase price for the product and then we pay the financing party. Our payment to the financing party for this needle coke includes a mark-up (the “Mark-Up”). The Mark-Up is a premium expressed as a percentage of the purchase price. The Mark-Up is subject to quarterly reviews. This arrangement helps us to maintain a balanced cash conversion cycle between inventory payments and the collection of receivables. Based on the terms of the arrangement, the total amount that we owe to the financing party can not exceed $49.3 million at any point in time. We record the inventory once title and risk of loss transfers from the supplier to the financing party. We record our liability to the financing party as an accrued liability. Our liability under this arrangement was $9.5 million as of December 31, 2013. We recognized Mark-Up of $0.2 million as interest expense in the three months ended March 31, 2013. We had minimal borrowings under this arrangement during the three months ended March 31, 2014 and as such, we incurred negligible Mark-Up.

Supply Chain Financing

We have a supply chain financing arrangement with a financing party. Under this arrangement, we essentially assign our rights to purchase needle coke from a supplier to the financing party. The financing party purchases the product from a supplier under the supplier's standard payment terms and then immediately resells it to us under longer payment terms. The financing party pays the supplier the purchase price for the product and then we pay the financing party. Our payment to the financing party for this needle coke includes a mark-up (the “Mark-Up”). The Mark-Up is a premium expressed as a percentage of the purchase price. The Mark-Up is subject to quarterly reviews. This arrangement helps us to maintain a balanced cash conversion cycle between inventory payments and the collection of receivables. Based on the terms of the arrangement, the total amount that we owe to the financing party can not exceed $49.3 million at any point in time.

We record the inventory once title and risk of loss transfers from the supplier to the financing party. We record our liability to the financing party as an accrued liability. Our liability under this arrangement was $9.5 million as of December 31, 2013. We recognized Mark-Up of $0.2 million as interest expense in the three months ended March 31, 2013. We had minimal borrowings under this arrangement during the three months ended March 31, 2014 and as such, we incurred negligible Mark-Up.