Quarterly report [Sections 13 or 15(d)]

Selected Balance Sheet Data - Narrative (Details)

v3.25.1
Selected Balance Sheet Data - Narrative (Details)
$ in Thousands
 3 Months Ended
Jan. 01, 2024
Jan. 01, 2023
Jan. 01, 2014
Mar. 31, 2025
USD ($)
installment
Mar. 31, 2024
USD ($)
Dec. 31, 2024
USD ($)
Mar. 31, 2013
USD ($)
Schedule Of Accrued Expenses [Line Items]              
Advances and loans and commissions receivable allowance for credit loss       $ 1,200   $ 1,200  
SARs frozen liability amount       $ 6,900   $ 9,518  
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 6.57% 5.95%          
Interest expense       $ 156 $ 170    
Payments for SARs Liability       $ 2,600 2,500    
Deferred Compensation Liability              
Schedule Of Accrued Expenses [Line Items]              
Fair value of deferred compensation plan assets       110.00%      
Payments made during the period       $ 143 $ 71    
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