Asset Impairments and Mine Closure Costs	6 Months Ended
Jun. 30, 2016
Discontinued Operations and Disposal Groups [Abstract]
Asset Impairment and Mine Closure Costs	Asset Impairment and Mine Closure Costs During the second quarter of 2016, the Company recorded $43.7 million of "Asset impairment and mine closure costs" in the Condensed Consolidated Statements of Operations. The amount includes the following: a $38.0 million impairment of the Company's equity investment in a brownfield bulk commodity terminal on the Columbia River in Longview, Washington as the Company relinquished its ownership rights in exchange for future throughput rights; a $3.6 million curtailment charge related to the Company's pension, postretirement health and black lung actuarial liabilities due to headcount reductions in the first half of the year; and $2.1 million of severance expense related to headcount reductions during the quarter. During the first quarter of 2016, the Company recorded $85.5 million of "Asset impairment and mine closure costs" in the Condensed Consolidated Statements of Operations. The amount included the following: a $74.1 million impairment of coal reserves and surface land in Kentucky that are being leased to a mining company that announced plans to idle its current mining operations related to those reserves during the quarter; $5.1 million of severance expense related to headcount reductions at Company operations; $3.4 million related to an impairment charge on the portion of an advance royalty balance on a reserve base mined at the Company's Mountain Laurel operation that will not be recouped; and $2.9 million related to an other-than-temporary-impairment charge on an available-for-sale security. During the second quarter of 2015, the Company recorded $19.1 million of "Asset impairment and mine closure costs" in the Condensed Consolidated Statements of Operations. An impairment charge of $12.2 million relates to the portion of an advance royalty balance on a reserve base mined at the Company's Mountain Laurel, Spruce and Briar Branch operations that will not be recouped based on latest estimates of sales volumes and pricing through the recoupment period which runs through March 2017. Additionally, the Company recorded a $5.6 million impairment charge related to the closure of a higher cost mining complex, Cumberland River, serving the metallurgical coal markets.

Asset Impairment and Mine Closure Costs

During the second quarter of 2016, the Company recorded $43.7 million of "Asset impairment and mine closure costs" in the Condensed Consolidated Statements of Operations. The amount includes the following: a $38.0 million impairment of the Company's equity investment in a brownfield bulk commodity terminal on the Columbia River in Longview, Washington as the Company relinquished its ownership rights in exchange for future throughput rights; a $3.6 million curtailment charge related to the Company's pension, postretirement health and black lung actuarial liabilities due to headcount reductions in the first half of the year; and $2.1 million of severance expense related to headcount reductions during the quarter.

During the first quarter of 2016, the Company recorded $85.5 million of "Asset impairment and mine closure costs" in the Condensed Consolidated Statements of Operations. The amount included the following: a $74.1 million impairment of coal reserves and surface land in Kentucky that are being leased to a mining company that announced plans to idle its current mining operations related to those reserves during the quarter; $5.1 million of severance expense related to headcount reductions at Company operations; $3.4 million related to an impairment charge on the portion of an advance royalty balance on a reserve base mined at the Company's Mountain Laurel operation that will not be recouped; and $2.9 million related to an other-than-temporary-impairment charge on an available-for-sale security.

During the second quarter of 2015, the Company recorded $19.1 million of "Asset impairment and mine closure costs" in the Condensed Consolidated Statements of Operations. An impairment charge of $12.2 million relates to the portion of an advance royalty balance on a reserve base mined at the Company's Mountain Laurel, Spruce and Briar Branch operations that will not be recouped based on latest estimates of sales volumes and pricing through the recoupment period which runs through March 2017. Additionally, the Company recorded a $5.6 million impairment charge related to the closure of a higher cost mining complex, Cumberland River, serving the metallurgical coal markets.