Computation of Basic and Diluted Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Sep. 29, 2023	Sep. 30, 2022
Numerators:
Consolidated net income	$ 21,223	$ 22,490	$ 60,367	$ 58,789
Denominators:
Weighted average common shares outstanding—basic	35,856	35,729	35,839	35,625
Dilutive potential common shares	185	199	185	256
Weighted average common shares outstanding— diluted	36,041	35,928	36,024	35,881
Antidilutive potential common shares excluded from above	49	73	101	104
Earnings per common share:
Basic	$ 0.59	$ 0.63	$ 1.68	$ 1.65
Diluted	$ 0.59	$ 0.63	$ 1.68	$ 1.64