CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Trade accounts receivable, allowances	$ 2,245	$ 2,335
Treasury stock, shares	102	99
Common Stock
Common stock, par value (in dollars per share)	$ 0.694	$ 0.694
Common stock, shares authorized	120,000	120,000
Common stock, shares issued	39,721	39,999
Class B Common Stock
Common stock, par value (in dollars per share)	$ 0.694	$ 0.694
Common stock, shares authorized	40,000	40,000
Common stock, shares issued	28,607	29,445