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Incentive Compensation Plan - Unvested Target Award (Detail) - shares
12 Months Ended
Feb. 18, 2021
Feb. 20, 2020
Feb. 21, 2019
Nov. 26, 2018
May 29, 2018
Mar. 26, 2018
Feb. 28, 2018
Feb. 26, 2018
Feb. 23, 2017
Dec. 19, 2016
Sep. 30, 2016
Sep. 19, 2016
Jun. 07, 2016
Mar. 01, 2016
Mar. 01, 2016
Dec. 30, 2015
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]                                      
Outstanding, beginning of the year, Shares                                 250,800 171,500 137,500
Granted, Shares                                 134,515 95,300 78,000
Vested, Shares                                 (88,389) (12,000) (41,000)
Forfeited, Shares                                 (10,911) (4,000) (3,000)
Outstanding, end of the year, Shares                                 286,015 250,800 171,500
Performance Based Stock Awards Vesting Period 3 years 3 years 3 years       3 years   3 years             5 years      
Share Based Compensation Arrangement By Share Based Payment Award Percentage Of Target Award Participants Earn 40.00% 40.00% 40.00%       40.00%   40.00%                    
Performance Shares Awards As Percentage Of Target 100.00% 100.00% 100.00%       100.00%   100.00%                    
Percentage Of Target Award Opportunities Maximum In Certain Cases 200.00% 200.00% 200.00%       200.00%   200.00%                    
Vesting period of restricted stock 0 years 0 years 0 years       0 years   0 years             0 years      
Restricted Stock [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]                                      
Outstanding, beginning of the year, Shares                                 434,180 442,832 496,603
Granted, Shares                                 143,400 125,800 134,929
Vested, Shares                                 (158,531) (134,452) (188,700)
Forfeited, Shares                                 (27,949) 0 0
Outstanding, end of the year, Shares                                 391,100 434,180 442,832
Shares issued (in shares)     15,000 2,000 3,000 2,000   77,500   15,000 10,000 33,000 10,000 5,000 10,000        
Vesting period of restricted stock     1 year 1 year 1 year 1 year   1 year   3 years 1 year 3 years 1 year 1 year 1 year        
Restricted Stock Units (RSUs) [Member] | Executive Officer [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]                                      
Shares issued (in shares) 143,400,000 125,800,000 121,900,000       102,000,000   93,500,000             60,000,000