Annual report pursuant to Section 13 and 15(d)

Selected Balance Sheet Data - Narrative (Detail)

v3.24.0.1
Selected Balance Sheet Data - Narrative (Detail)
$ in Thousands
 12 Months Ended
Jan. 01, 2023
Jan. 01, 2022
Jan. 01, 2021
Jan. 01, 2014
Dec. 31, 2023
USD ($)
installment
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Mar. 31, 2013
USD ($)
Schedule Of Accrued Expenses [Line Items]                
Advances and loans and commissions receivable allowance for credit loss         $ 680 $ 791    
SARs frozen liability amount         $ 11,418 13,137    
Treasury note term         1 year      
Interest expense         $ 888 708 $ 580  
Commissions Payable                
Schedule Of Accrued Expenses [Line Items]                
Maximum payment deferral period for certain commissions payable         3 years      
SARs                
Schedule Of Accrued Expenses [Line Items]                
SARs frozen liability amount               $ 20,000
Number of annual installments | installment         10      
Treasury note term       10 years        
Base spread on SARs liability variable rate       2.00%        
SARs liability interest accrual rates 5.79% 3.63% 2.93%          
Interest expense         $ 761 542 $ 488  
Payments for SARs Liability         $ 2,300 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         $ 500 $ 1,100    
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