XML 41 R29.htm IDEA: XBRL DOCUMENT v3.22.2
Inventories (Tables)
6 Months Ended
Jun. 30, 2022
Inventories  
Inventories

    

June 30, 

    

December 31, 

 

2022

 

2021

(In thousands)

Coal

$

112,081

$

75,653

Repair parts and supplies

 

100,671

 

81,081

$

212,752

$

156,734