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Miscellaneous Other Income
 12 Months Ended
Dec. 31, 2019
Component of Operating Income [Abstract]  
Miscellaneous Other Income MISCELLANEOUS OTHER INCOME:
 
 
For the Years Ended December 31,
 
 
2019
 
2018
 
2017
Royalty Income - Non-Operated Coal
 
$
22,208

 
$
24,722

 
$
28,089

Purchased Coal Sales
 
12,385

 
19,152

 
13,161

Contract Buyout
 
9,959

 
350

 
9,912

Interest Income
 
2,937

 
2,146

 
2,619

Rental Income
 
2,517

 
3,804

 
14,114

Property Easements and Option Income
 
1,631

 
5,644

 
2,436

Other
 
1,712

 
2,842

 
2,948

     Miscellaneous Other Income
 
$
53,349


$
58,660


$
73,279