v2.4.0.8

Dispositions (Details) (USD $)	6 Months Ended	3 Months Ended			12 Months Ended		3 Months Ended		12 Months Ended	3 Months Ended	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2013 Potamac Coal Reserves [Member]	Jun. 30, 2013 Robinson Run Longwall Shields [Member] [Member]	Mar. 31, 2012 Burning Star Disposal [Member]	Dec. 31, 2012 Ram River [Member] acre	Dec. 31, 2012 Burning Start No.4 [Member] acre	Jun. 30, 2013 Shoemaker Longwall Shields [Member]	Jun. 30, 2013 Bailey Longwall Shields [Member]	Dec. 31, 2012 Youngs Creek [Member] acre	Jun. 30, 2012 Elk Creek [Member]	Dec. 31, 2012 Elk Creek [Member] acre
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale Leaseback Transaction, Net Proceeds			$ 68,337,000				$ 63,839,000	$ 71,166,000
Coal Lands and or Surface Rights					36,000	4,300			200,000,000		20
Proceeds from Sale of Property, Plant, and Equipment	252,229,000	25,000,000		13,023,000	51,869,000				169,500	26,000
Disposal Group, Including Discontinued Operation, Assets of Disposal Group									.5
Gain (Loss) on Disposition of Assets		24,663,000		11,261,000	89,943,000				150,677,000
Gain (Loss) on Sale of Property Plant Equipment			(236,000)				279,000	358,000		(11,235)
royalty percentage retained									.08
Note Receivable 1 year - PPE Sale					25,500,000
Note Receivable 2 year - PPE Sale					24,500,000
Restricted Cash and Cash Equivalents					48,294,000
Transaction and Financing Fees					$ 637,000

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Description, in aggregate or in detail, of the major classifications and carrying amounts of total assets sold, or to be sold, as part of the disposal group, including a component of the entity (discontinued operation).

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The gains (losses) included in earnings resulting from the sale or disposal of tangible assets. This item does not include any gain (loss) recognized on the sale of oil and gas property or timber property.

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The difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. This element refers to the gain (loss).

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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The gross proceeds received from the asset(s) sold in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller less the costs incurred in connection with the transaction, such as closing and deferred financing costs.

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