Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Numerator:
Net income as reported	$ 24,644	$ 36,989
Weighted average shares outstanding
Basic (in shares)	24,393	24,717
Effect of dilutive securities (in shares)	185	292
Diluted (in shares)	24,578	25,009
Earnings Per Share:
Basic earnings per share (in dollars per share)	$ 1.01	$ 1.50
Diluted earnings per share (in dollars per share)	$ 1.00	$ 1.48