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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 6 Months Ended
Jul. 01, 2023
Apr. 01, 2023
Jun. 25, 2022
Mar. 26, 2022
Jul. 01, 2023
Jun. 25, 2022
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]            
Net Income (Loss) $ 58,035 $ (8,956) $ 53,349 $ (1,955) $ 49,079 $ 51,394
Allocation of net income for basic:            
Allocation of net income for basic common stock $ 58,035   $ 53,349   $ 49,079 $ 51,394
Weighted average number of shares for basic:            
Common shares, As reported - basic 12,268   12,319   12,288 12,309
Net income per share for basic:            
Net income per common share - basic $ 4.73   $ 4.33   $ 3.99 $ 4.18
Common Class A            
Allocation of net income for basic:            
Allocation of net income for basic common stock $ 48,130   $ 44,261   $ 40,722 $ 42,631
Weighted average number of shares for basic:            
Common shares, As reported - basic 10,174   10,221   10,196 10,210
Net income per share for basic:            
Net income per common share - basic $ 4.73   $ 4.33   $ 3.99 $ 4.18
Common Class B            
Allocation of net income for basic:            
Allocation of net income for basic common stock $ 9,783   $ 8,956   $ 8,259 $ 8,634
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 $ 4.73   $ 4.33   $ 3.99 $ 4.18
Unvested participating shares            
Allocation of net income for basic:            
Allocation of net income for basic unvested participating shares $ 122   $ 132   $ 98 $ 129
Weighted average number of shares for basic:            
Common shares, As reported - basic 26   30   24 31