Computation of Basic and Diluted Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Apr. 01, 2022
Numerators:
Consolidated net income	$ 18,265	$ 18,820
Denominators:
Weighted average common shares outstanding—basic	35,810	35,538
Dilutive potential common shares	189	243
Weighted average common shares outstanding— diluted	35,999	35,781
Antidilutive potential common shares excluded from above	113	93
Earnings per common share (Note 4):
Basic	$ 0.51	$ 0.53
Diluted	$ 0.51	$ 0.53