(1) General Business	3 Months Ended
Mar. 31, 2013
Business Description and Basis of Presentation [Text Block]	(1) General Business The interim financial data is unaudited; however, in our opinion, it includes all adjustments, consisting only of normal recurring adjustments necessary for a fair statement of the results for the interim periods. The financial statements included herein have been prepared pursuant to the SEC’s rules and regulations; accordingly, certain information and footnote disclosures normally included in GAAP financial statements have been condensed or omitted. The results of operations and cash flows for the three months ended March 31, 2013 are not necessarily indicative of the results to be expected for future quarters or for the year ending December 31, 2013. To maintain consistency and comparability, certain 2012 amounts have been reclassified to conform to the 2013 presentation. Our organization and business, the accounting policies we follow and other information, are contained in the notes to our consolidated financial statements filed as part of our 2012 Form 10-K. This quarterly report should be read in conjunction with such 10-K. The consolidated financial statements include the accounts of Hallador Energy Company (the Company) and its wholly-owned subsidiary Sunrise Coal, LLC (Sunrise). All significant intercompany accounts and transactions have been eliminated. We are engaged in the production of steam coal from mines located in western Indiana. We own a 45% equity interest in Savoy Energy L.P., a private oil and gas company which has operations in Michigan and a 50% interest in Sunrise Energy, LLC, a private entity engaged in natgas operations in the same vicinity as our coal mines.

(1) General Business

3 Months Ended

Mar. 31, 2013

Business Description and Basis of Presentation [Text Block]

(1) General Business

The interim financial data is unaudited; however, in our opinion, it includes all adjustments, consisting only of normal recurring adjustments necessary for a fair statement of the results for the interim periods. The financial statements included herein have been prepared pursuant to the SEC’s rules and regulations; accordingly, certain information and footnote disclosures normally included in GAAP financial statements have been condensed or omitted.

The results of operations and cash flows for the three months ended March 31, 2013 are not necessarily indicative of the results to be expected for future quarters or for the year ending December 31, 2013. To maintain consistency and comparability, certain 2012 amounts have been reclassified to conform to the 2013 presentation.

Our organization and business, the accounting policies we follow and other information, are contained in the notes to our consolidated financial statements filed as part of our 2012 Form 10-K. This quarterly report should be read in conjunction with such 10-K.

The consolidated financial statements include the accounts of Hallador Energy Company (the Company) and its wholly-owned subsidiary Sunrise Coal, LLC (Sunrise). All significant intercompany accounts and transactions have been eliminated. We are engaged in the production of steam coal from mines located in western Indiana. We own a 45% equity interest in Savoy Energy L.P., a private oil and gas company which has operations in Michigan and a 50% interest in Sunrise Energy, LLC, a private entity engaged in natgas operations in the same vicinity as our coal mines.