v3.20.2
Inventories
6 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Inventories
(4) Inventories

Inventories consisted of the following:
(in thousands)June 30, 2020December 31, 2019
Finished goods$17,362  $17,612  
Raw materials177  243  
Parts, supplies and other29,129  30,441  
Total inventories
$46,668  $48,296