Net Income per Share - Computation of Earnings Per Share, Basic (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 25, 2022
Mar. 26, 2022
Jun. 26, 2021
Mar. 27, 2021
Jun. 25, 2022
Jun. 26, 2021
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]            
Net income $ 53,349 $ (1,955) $ 59,195 $ 65,565 $ 51,394 $ 124,760
Allocation of net income for basic:            
Allocation of net income for basic common stock $ 53,349   $ 59,195   $ 51,394 $ 124,760
Weighted average number of shares for basic:            
Weighted-average number of common shares — basic 12,319   12,283   12,309 12,277
Net income per share for basic:            
Net income per common share - basic $ 4.33   $ 4.82   $ 4.18 $ 10.16
Common Class A            
Allocation of net income for basic:            
Allocation of net income for basic common stock $ 44,261   $ 48,710   $ 42,631 $ 102,354
Weighted average number of shares for basic:            
Weighted-average number of common shares — basic 10,221   10,108   10,210 10,072
Net income per share for basic:            
Net income per common share - basic $ 4.33   $ 4.82   $ 4.18 $ 10.16
Common Class B            
Allocation of net income for basic:            
Allocation of net income for basic common stock $ 8,956   $ 10,268   $ 8,634 $ 21,893
Weighted average number of shares for basic:            
Weighted-average number of common shares — basic 2,068   2,131   2,068 2,155
Net income per share for basic:            
Net income per common share - basic $ 4.33   $ 4.82   $ 4.18 $ 10.16
Unvested participating shares            
Allocation of net income for basic:            
Allocation of net income for basic unvested participating shares $ 132   $ 217   $ 129 $ 513
Weighted average number of shares for basic:            
Weighted-average number of common shares — basic 30   44   31 50