Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share [Abstract]
Net income attributable to the Company	$ 111,120	$ 95,762	$ 118,478
Weighted average number of shares:
Weighted average number of shares used in calculating basic net income per share (in shares)	31,171	31,339	32,348
Effect of dilutive stock-based compensation plans:
Stock options	0	0	2
Long-term incentive plans	105	116	113
Weighted average number of shares used in calculating diluted net income per share (in shares)	31,276	31,455	32,463
Net income per share:
Basic (in dollars per share)	$ 3.56	$ 3.06	$ 3.66
Diluted (in dollars per share)	$ 3.55	$ 3.04	$ 3.65
Common stock, shares, outstanding (in shares)	31,200	31,100	32,100