CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Receivables, reserve	$ 21	$ 21
Treasury stock, shares (in shares)	14,664,467	10,229,521
Class A
Common stock, no par value (usd per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	20,000	20,000
Common stock, shares issued (in shares)	9,000	9,000
Common stock, shares outstanding (in shares)	9,000	9,000
Class B
Common stock, no par value (usd per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	900,000,000	900,000,000
Common stock, shares issued (in shares)	99,505,456	99,505,456