Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2023

Equity [Abstract]

Stockholders' Equity

	Common Stock						Treasury Stock
(number of shares in thousands)	2023		2022		2021		2023			2022			2021
At January 1		29,554.5		29,554.5		29,554.5		4,789			4,781			4,959
Exercise of options		—		—		—		(113	)		(55	)		(185	)
Stock purchases		—		—		—		11			63			7
At December 31		29,554.5		29,554.5		29,554.5		4,687			4,789			4,781