Annual report pursuant to Section 13 and 15(d)

Selected Balance Sheet Data - Narrative (Detail)

v3.22.4
Selected Balance Sheet Data - Narrative (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 01, 2022
Jan. 01, 2021
Jan. 01, 2020
Jan. 01, 2014
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Mar. 31, 2013
Schedule Of Accrued Expenses [Line Items]                
SARs frozen liability amount         $ 13,137 $ 14,918    
Treasury note term         1 year      
Interest expense         $ 708 580 $ 900  
Commissions Payable                
Schedule Of Accrued Expenses [Line Items]                
Maximum payment deferral period for certain commissions payable         3 years      
Mortgage servicing rights                
Schedule Of Accrued Expenses [Line Items]                
Servicing portfolio of commercial real estate loans, unpaid principal balance           1,700,000    
SARs                
Schedule Of Accrued Expenses [Line Items]                
SARs frozen liability amount               $ 20,000
Treasury note term       10 years        
Base spread on SARs liability variable rate       2.00%        
SARs liability interest accrual rates 3.63% 2.93% 3.92%          
Interest expense         $ 542 488 $ 710  
Payments made during the period         $ 2,200 2,200    
Deferred Compensation Liability                
Schedule Of Accrued Expenses [Line Items]                
Fair value of deferred compensation plan assets         110.00%      
Payments made during the period         $ 1,100 $ 1,500    
Deferred Compensation Liability | Minimum                
Schedule Of Accrued Expenses [Line Items]                
Payout period         2 years      
Deferred Compensation Liability | Maximum                
Schedule Of Accrued Expenses [Line Items]                
Payout period         15 years