XML 56 R36.htm IDEA: XBRL DOCUMENT v3.8.0.1
INVENTORIES (Tables)
 12 Months Ended
Dec. 31, 2017
INVENTORIES  
Schedule of inventories

 

 

 

 

 

 

 

 

 

 

2017

    

2016

 

 

 

(in thousands)

 

 

 

 

 

 

 

 

 

Coal

 

$

22,825

 

$

29,242

 

Supplies (net of reserve for obsolescence of $5,149 and $4,940, respectively)

 

 

37,450

 

 

31,809

 

Total inventories, net

 

$

60,275

 

$

61,051