XML 60 R49.htm IDEA: XBRL DOCUMENT v3.21.2
INVENTORIES (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
INVENTORIES    
Raw materials $ 125,080 $ 111,888
Work-in-process 91,899 60,341
Finished goods 260,698 209,029
Total $ 477,677 $ 381,258
Percentage of total inventories valued using the LIFO method (as a percent) 35.00% 35.00%
Excess of current cost over LIFO cost $ 88,909 $ 75,581