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Miscellaneous Other Income
 12 Months Ended
Dec. 31, 2018
Component of Operating Income [Abstract]  
Miscellaneous Other Income
MISCELLANEOUS OTHER INCOME:
 
 
For the Years Ended December 31,
 
 
2018
 
2017
 
2016
Royalty Income - Non-Operated Coal
 
$
24,722

 
$
28,089

 
$
19,739

Purchased Coal Sales
 
19,152

 
13,161

 
5,757

Property Easements and Option Income
 
5,644

 
2,436

 
11,281

Rental Income
 
3,804

 
14,114

 
34,789

Interest Income
 
2,146

 
2,619

 
1,166

Contract Buyout
 
350

 
9,912

 
6,288

Other
 
2,842

 
2,948

 
3,100

     Miscellaneous Other Income
 
$
58,660


$
73,279


$
82,120