Acquisition	9 Months Ended
Sep. 30, 2014
Business Combinations [Abstract]
Acquisition	Acquisition During the fourth quarter of 2013, NACoal acquired the equipment of National Coal of Alabama, Inc. ("NCOA") in exchange for the assumption of outstanding debt of $9.7 million associated with the acquired equipment. The outstanding debt was repaid concurrently with the acquisition of the equipment utilizing borrowings under NACoal's existing unsecured revolving line of credit. In April 2014, NACoal acquired coal reserves and prepaid royalties and assumed certain reclamation obligations of NCOA. The acquisition of NCOA did not include any additional cash consideration. This acquisition, which is being accounted for as a business combination, provides additional coal reserves in Alabama and equipment that can be used to mine these acquired coal reserves and coal reserves at NACoal's Reed Minerals mines, also located in Alabama. During the nine months ended September 30, 2014, the Company incurred $0.1 million in acquisition costs related to NCOA, which are included in Selling, general and administrative expenses in the Unaudited Condensed Consolidated Statements of Operations. The Company has incurred total acquisition costs of $0.4 million related to NCOA. The determination of the fair value of assets acquired and liabilities assumed as of the April 2014 acquisition date is preliminary as the Company has not finalized its analysis of the fair value of the equipment, coal reserves, prepaid royalties and reclamation obligations. The final allocation is expected to be completed as soon as practicable but no later than 12 months after the acquisition date.

Acquisition

9 Months Ended

Sep. 30, 2014

During the fourth quarter of 2013, NACoal acquired the equipment of National Coal of Alabama, Inc. ("NCOA") in exchange for the assumption of outstanding debt of $9.7 million associated with the acquired equipment. The outstanding debt was repaid concurrently with the acquisition of the equipment utilizing borrowings under NACoal's existing unsecured revolving line of credit. In April 2014, NACoal acquired coal reserves and prepaid royalties and assumed certain reclamation obligations of NCOA. The acquisition of NCOA did not include any additional cash consideration. This acquisition, which is being accounted for as a business combination, provides additional coal reserves in Alabama and equipment that can be used to mine these acquired coal reserves and coal reserves at NACoal's Reed Minerals mines, also located in Alabama. During the nine months ended September 30, 2014, the Company incurred $0.1 million in acquisition costs related to NCOA, which are included in Selling, general and administrative expenses in the Unaudited Condensed Consolidated Statements of Operations. The Company has incurred total acquisition costs of $0.4 million related to NCOA.

The determination of the fair value of assets acquired and liabilities assumed as of the April 2014 acquisition date is preliminary as the Company has not finalized its analysis of the fair value of the equipment, coal reserves, prepaid royalties and reclamation obligations. The final allocation is expected to be completed as soon as practicable but no later than 12 months after the acquisition date.