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Other Accrued Liabilities | 12 Months Ended
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Dec. 31, 2014
Other Liabilities Disclosure [Abstract] |
Accounts Payable and Accrued Liabilities Disclosure [Text Block] | NOTE 13—OTHER ACCRUED LIABILITIES:
|  | December 31,
|  | 2014 |  | 2013
Subsidence liability |  | $ | 103,343 |  |  | $ | 98,573 |
Royalties |  | 52,456 |  |  | 34,110 |
Accrued Interest |  | 51,404 |  |  | 63,600 |
Columbia Energy Ventures Majorsville Sublease |  | 49,533 |  |  | — |
Accrued payroll and benefits |  | 37,293 |  |  | 38,953 |
Short-term incentive compensation |  | 36,272 |  |  | 30,371 |
Accrued other taxes |  | 17,951 |  |  | 26,305 |
Uncertain income tax positions |  | — |  |  | 28,530 |
Other |  | 100,284 |  |  | 87,407 |
Current portion of long-term liabilities: |  |  |  |
Postretirement benefits other than pensions |  | 57,279 |  |  | 60,847 |
Mine closing |  | 32,222 |  |  | 30,320 |
Gas well closing |  | 21,286 |  |  | 23,971 |
Workers' compensation |  | 15,122 |  |  | 15,014 |
Salary retirement |  | 9,339 |  |  | 4,593 |
Pneumoconiosis benefits |  | 9,156 |  |  | 9,211 |
Reclamation |  | 6,075 |  |  | 9,552 |
Long-term disability |  | 3,957 |  |  | 4,340 |
Total Other Accrued Liabilities |  | $ | 602,972 |  |  | $ | 565,697 |

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- Definition The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a),20,24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 24 -Article 5 + Details
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