CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
CURRENT ASSETS:
Accounts receivable, allowance for discounts and expected credit losses	$ 10,395	$ 10,043
Property, plant and equipment, accumulated depreciation	$ 309,409	$ 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)	1,594,225	1,790,097

Amount of accumulated depreciation, depletion, and amortization of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection.