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Major Lessees
12 Months Ended
Dec. 31, 2015
Leases [Abstract]  
Major Lessees
Major Lessees

Revenues from lessees that exceeded ten percent of total revenues and other income for any of the periods presented below are as follows (in thousands except for percentages):
 
 
For the Years Ended December 31,
 
 
2015
 
2014
 
2013
 
 
Revenues
 
Percent
 
Revenues
 
Percent
 
Revenues
 
Percent
Foresight Energy
 
$
86,614

 
17.7
%
 
$
81,546

 
20.4
%
 
$
88,432

 
24.7
%
Alpha Natural Resources
 
$
34,364

 
7.0
%
 
$
48,783

 
12.2
%
 
$
55,147

 
15.4
%


All of the revenue related to the customers above is included in revenues of the Coal, Hard Mineral Royalty and Other segment.

The Partnership had a significant concentration of revenues with Foresight Energy and Alpha Natural Resources. The exposure is currently spread out over a number of different mining operations and leases. During the year ended December 31, 2015, total revenues and other income from Alpha Natural Resources included a $6.0 million non-recurring lease assignment fee.