根据第13和15(d)条提交的年度报告

金融工具的公允价值

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金融工具的公允价值
12个月结束
12月. 31, 2013
投资,所有其他投资[摘要]  
金融工具的公允价值
金融工具的公允价值
The carrying amounts on the accompanying consolidated balance sheet for cash and cash equivalents, 应收账款, 应付帐款及应计负债, 流动债务按成本计提, 由于它们的短期性质,哪个更接近im体育平台官方网站价值. 与建筑贷款有关的长期债务按成本计提, which approximates market value based on the borrowing rates currently available to the Company with similar terms and maturities.
At 2013年12月31日, the carrying value of the outstanding debt represented by the Notes was $297.200万年,包括剩余的未摊销折扣约为 $3.200万年 related to the October Notes and the remaining unamortized premium of approximately $0.400万年 与十二月票据有关. Based on the quoted market price, the fair value of the Notes was determined to be approximately $320.800万年 at 2013年12月31日.
The fair value of the derivative instruments is computed based on the difference between the prices provided by the fixed-price contracts and forward market prices as of the specified date, 按基差调整, 以及公司的交换, market implied volatilities of the underlying commodity are also evaluated. Forward market prices for oil and natural gas are dependent upon supply and demand factors in such forward market and are subject to significant volatility.