Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Inventory, Net
Finished products and work in process	$ 41,658	$ 39,909
Raw materials	3,457	4,453
Inventory, net	45,115	44,362
Valued at lower of cost or market:
LIFO basis	24,815	25,258
Valued at lower of cost and net realizable value:
FIFO or average cost basis	20,300	19,104
Inventory, net	$ 45,115	$ 44,362