Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

v3.19.1
Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Inventory, Net    
Finished products and work in process $ 228,874 $ 206,188
Raw materials 54,675 58,560
Inventory, Net 283,549 264,748
Valued at lower of cost or market:    
LIFO basis 171,967 160,863
FIFO or average cost basis 111,582 103,885
Inventory, Net $ 283,549 $ 264,748