Earnings (loss) Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 26, 2021	Mar. 27, 2021	Jun. 27, 2020	Mar. 28, 2020	Jun. 26, 2021	Jun. 27, 2020
Numerator:
Net income (loss) as reported	$ 82,095	$ 57,713	$ (8,991)	$ 24,644	$ 139,808	$ 15,653
Weighted average shares outstanding
Basic (in shares)	24,592		24,312		24,562	24,353
Effect of dilutive securities (in shares)	308		0		332	167
Diluted (in shares)	24,900		24,312		24,894	24,520
Earnings (loss) Per Share:
Basic earnings (loss) per share (in dollars per share)	$ 3.34		$ (0.37)		$ 5.69	$ 0.64
Diluted earnings (loss) per share (in dollars per share)	$ 3.30		$ (0.37)		$ 5.62	$ 0.64