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Net Income per Share - Computation of Net Income Per Share, Basic (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Jul. 01, 2023
Apr. 01, 2023
Sep. 24, 2022
Jun. 25, 2022
Mar. 26, 2022
Sep. 30, 2023
Sep. 24, 2022
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                
Net Income (Loss) $ 45,295 $ 58,035 $ (8,956) $ 27,286 $ 53,349 $ (1,955) $ 94,374 $ 78,680
Allocation of net income for basic:                
Allocation of net income for basic common stock $ 45,295     $ 27,286     $ 94,374 $ 78,680
Weighted average number of shares for basic:                
Common shares, As reported - basic 12,228     12,321     12,268 12,313
Net income per share for basic:                
Net income per common share - basic $ 3.7     $ 2.21     $ 7.69 $ 6.39
Common Class A                
Allocation of net income for basic:                
Allocation of net income for basic common stock $ 37,542     $ 22,647     $ 78,276 $ 65,276
Weighted average number of shares for basic:                
Common shares, As reported - basic 10,135     10,226     10,175 10,216
Net income per share for basic:                
Net income per common share - basic $ 3.7     $ 2.21     $ 7.69 $ 6.39
Common Class B                
Allocation of net income for basic:                
Allocation of net income for basic common stock $ 7,660     $ 4,580     $ 15,908 $ 13,214
Weighted average number of shares for basic:                
Common shares, As reported - basic 2,068     2,068     2,068 2,068
Net income per share for basic:                
Net income per common share - basic $ 3.7     $ 2.21     $ 7.69 $ 6.39
Unvested participating shares                
Allocation of net income for basic:                
Allocation of net income for basic unvested participating shares $ 93     $ 59     $ 190 $ 190
Weighted average number of shares for basic:                
Common shares, As reported - basic 25     27     25 29