Rendering

Component: (Network and Table)
Network
2423404 - Disclosure - Segment Information (Details 3)
(http://www.alphanr.com/role/SegmentInformationDetails3)
TableSchedule of Segment Reporting Information, by Segment [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001301063 (http://www.sec.gov/CIK)
Segment InformationPeriod [Axis]
2013-01-01 - 2013-12-31
2012-01-01 - 2012-12-31
2011-01-01 - 2011-12-31
Segments [Axis]Segments [Axis]Segments [Axis]
Eastern Coal Operations [Member]Western Coal Operations [Member]Other Segments [Member]Segments [Domain]Eastern Coal Operations [Member]Western Coal Operations [Member]Other Segments [Member]Segments [Domain]Eastern Coal Operations [Member]Western Coal Operations [Member]Other Segments [Member]Segments [Domain]
EBITDA from continuing operations
(44,223,000) 
90,879,000  
(263,556,000) 
(216,900,000) 
(1,807,515,000) 
65,153,000  
(82,771,000) 
(1,825,133,000) 
143,649,000  
74,891,000  
(190,705,000) 
27,835,000  
Interest expense
(2,830,000) 
(534,000) 
(243,224,000) 
(246,588,000) 
(2,696,000) 
(380,000) 
(195,071,000) 
(198,147,000) 
(25,648,000) 
(69,000) 
(116,197,000) 
(141,914,000) 
Interest income
1,396,000  
3,000  
2,118,000  
3,517,000  
1,395,000  
4,000  
1,974,000  
3,373,000  
1,008,000  
0  
2,970,000  
3,978,000  
Income tax benefit
(10,000) 
0  
216,560,000  
216,550,000  
(27,000) 
0  
550,023,000  
549,996,000  
0  
0  
35,906,000  
35,906,000  
Depreciation, depletion and amortization
(780,120,000) 
(54,265,000) 
(30,636,000) 
(865,021,000) 
(949,064,000) 
(62,729,000) 
(25,782,000) 
(1,037,575,000) 
(688,068,000) 
(61,401,000) 
(21,300,000) 
(770,769,000) 
Amortization of acquired intangibles, net
(7,916,000) 
2,878,000  
(18,000) 
(5,056,000) 
87,875,000  
(13,644,000) 
(3,893,000) 
70,338,000  
152,565,000  
(34,919,000) 
(3,224,000) 
114,422,000  
Net loss
(833,703,000) 
 
38,961,000  
 
(318,756,000) 
 
(1,113,498,000) 
 
(2,670,032,000) 
 
(11,596,000) 
 
244,480,000  
 
(2,437,148,000) 
 
(416,494,000) 
 
(21,498,000) 
 
(292,550,000) 
 
(730,542,000)