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. 27, 2024	Sep. 29, 2023	Sep. 27, 2024	Sep. 29, 2023
Numerators:
Net income	$ 19,192	$ 21,223	$ 47,623	$ 60,367
Denominators:
Weighted average common shares outstanding—basic	35,959	35,856	35,940	35,839
Dilutive common share equivalents	170	185	176	185
Weighted average common shares outstanding— diluted	36,129	36,041	36,116	36,024
Antidilutive common share equivalents excluded from above	102	49	113	101
Earnings per common share (Note 5):
Basic	$ 0.53	$ 0.59	$ 1.33	$ 1.68
Diluted	$ 0.53	$ 0.59	$ 1.32	$ 1.68