CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
CURRENT ASSETS:
Accounts receivable, allowance for discounts and expected credit losses	$ 10,159	$ 10,043
Property, plant and equipment, accumulated depreciation	$ 299,761	$ 300,283
Stockholders’ equity:
Common stock, par value (in dollars per share)	$ 2.00	$ 2.00
Common stock, shares authorized (in shares)	30,000,000	30,000,000
Common stock, shares issued (in shares)	23,936,036	23,936,036
Treasury stock - at cost (in shares)	1,690,616	1,790,097