v3.26.1
Description of Plan - Additional Information (Details) - EBP 006
 12 Months Ended
Jan. 01, 2024
Employee
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
EBP, Description of Plan [Line Items]      
Employee benefit plan maximum annual compensation limitation amount   $ 350,000  
Employee benefit plan maximum annual compensation limitation percentage   50.00%  
Matching contribution percentage   25.00%  
Percentage on employee eligible compensation   4.00%  
Employee benefit plan, participant contribution, pretax, maximum annual compensation, amount   $ 23,500  
Employee benefit plan participant maximum annual contribution amount   70,000  
Employee benefit plan participant maximum annual contribution including catch up contributions amount   $ 77,500  
Employee benefit plan participant maximum annual compensation percentage   100.00%  
Employee benefit plan, employer contribution, participant investment options reallocate amounts, percentage   1.00%  
Employee benefit plan, notes receivable from participant, account, minimum borrowing, amount   $ 1,000  
Employee benefit plan, notes receivable from participant, account, maximum borrowing, amount   $ 50,000  
Employee benefit plan, note receivable from participant, account, maximum borrowing, to total account, percentage   50.00%  
Employee benefit plan note receivable interest rate spread   1.00%  
Employee benefit plan forfeited nonvested amount used to offset employer matching contributions   $ 59,000  
Employee benefit plan, unused forfeited balances   $ 26,000 $ 23,000
Employee benefit plan contribution vesting description   Participants are immediately vested in their elective contributions plus any income or loss thereon.  
Age 50 or Older      
EBP, Description of Plan [Line Items]      
Employee benefit plan maximum annual catch-up contributions limit amount   $ 7,500  
Ages 60 through 63      
EBP, Description of Plan [Line Items]      
Employee benefit plan maximum annual catch-up contributions limit amount   11,250  
Employee benefit plan participant maximum annual contribution including catch up contributions amount   $ 81,250  
Montana Rail Link Employees      
EBP, Description of Plan [Line Items]      
Matching contribution percentage 50.00%    
Percentage on employee eligible compensation 8.00%    
Maximum      
EBP, Description of Plan [Line Items]      
Employee benefit plan, employer contribution, single vested contribution of qualified earnings, percentage   25.00%  
Employee benefit plan percentage of participant account in stock fund   20.00%  
Employee benefit plan, note receivable from participant, loan terms for purchase of primary residence.   15 years  
Employee benefit plan note receivable from participant interest rate   10.50% 11.50%
Employee benefit plan immediate lump sum distributions transferred to individual retirement account   $ 7,000  
Maximum | Montana Rail Link Employees      
EBP, Description of Plan [Line Items]      
Employee benefit plan, number of employees from acquisition | Employee 1,000    
Minimum      
EBP, Description of Plan [Line Items]      
Employee benefit plan, employer contribution, single vested contribution of qualified earnings, percentage   1.00%  
Employee benefit plan, note receivable from participant, loan terms for purchase of primary residence.   5 years  
Employee benefit plan note receivable from participant interest rate   4.25% 4.25%
Employee benefit plan mandatory lump sum distributions transferred to individual retirement account   $ 1,000