Net (Loss) Income per Share - Computations of Diluted Net (Loss) Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 26, 2022	Mar. 27, 2021
Schedule Of Earnings Per Share Basic And Diluted By Common Class [Line Items]
Earnings (Loss) to Common Shareholders, As reported - basic	$ (1,955)	$ 65,565
Weighted-average number of common shares — basic	12,300	12,271
EPS, As reported - basic	$ (0.16)	$ 5.34
Add: effect of dilutive common shares Share-based awards		162
Earnings (Loss) to Common Shareholders, Net effect of unvested participating shares	$ (5)	$ 299
Common Shares, Net effect of unvested participating shares	32	80
Net Income (Loss) Available to Common Stockholders, Diluted, Total	$ (1,955)	$ 65,565
Weighted Average Number of Shares Outstanding, Diluted, Total	12,300	12,457
EPS, Net (loss) income per common share - diluted	$ (0.16)	$ 5.26
Common Class A
Schedule Of Earnings Per Share Basic And Diluted By Common Class [Line Items]
Earnings (Loss) to Common Shareholders, As reported - basic	$ (1,621)	$ 53,628
Weighted-average number of common shares — basic	10,200	10,037
EPS, As reported - basic	$ (0.16)	$ 5.34
Common Class B
Schedule Of Earnings Per Share Basic And Diluted By Common Class [Line Items]
Earnings (Loss) to Common Shareholders, As reported - basic	$ (329)	$ 11,638
Weighted-average number of common shares — basic	2,068	2,178
EPS, As reported - basic	$ (0.16)	$ 5.34
Earnings (Loss) to Common Shareholders, Class B Common Stock	$ (329)	$ 11,638
Class B Common Stock	2,068	2,178