Net Income per Share - Computation of Earnings Per Share, Basic (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income	$ 67,263	$ 14,553	$ 191,960
Allocation of net income for basic:
Allocation of net income for basic common stock	$ 67,263	$ 14,553	$ 191,960
Weighted average number of shares for basic:
Weighted-average number of common shares - basic	12,317	12,280	12,204
Net income per share for basic:
Net income per common share - basic	$ 5.46	$ 1.19	$ 15.73
Common Class A
Allocation of net income for basic:
Allocation of net income for basic common stock	$ 55,812	$ 11,995	$ 153,106
Weighted average number of shares for basic:
Weighted-average number of common shares - basic	10,221	10,121	9,734
Net income per share for basic:
Net income per common share - basic	$ 5.46	$ 1.19	$ 15.73
Common Class B
Allocation of net income for basic:
Allocation of net income for basic common stock	$ 11,293	$ 2,506	$ 37,690
Weighted average number of shares for basic:
Weighted-average number of common shares - basic	2,068	2,115	2,396
Net income per share for basic:
Net income per common share - basic	$ 5.46	$ 1.19	$ 15.73
Unvested participating shares
Allocation of net income for basic:
Allocation of net income for basic unvested participating shares	$ 158	$ 52	$ 1,164
Weighted average number of shares for basic:
Weighted-average number of common shares - basic	28	44	74