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Retirement Plans (Funded Status) (Details) - Combined Employee Retirement Plans [Member] - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2023
Jan. 31, 2022
Change in Benefit Obligation    
Benefit obligation at beginning of year $ 40,586 $ 44,178
Service cost 0 0
Interest cost 1,295 1,113
Participant contributions 0 0
Amendments 0 0
Actuarial losses (gains) (6,892) (2,373)
Plan settlement 0 0
Benefits paid (2,004) (2,332)
Benefit obligation at end of year 32,985 40,586
Change in Plan Assets    
Fair value at beginning of year 26,429 23,972
Actual return on plan assets (1,428) 4,099
Company contributions 631 690
Settlements 0 0
Benefits paid (2,004) (2,332)
Fair value at end of year 23,628 26,429
Unfunded status of the plans (9,357) (14,157)
Amounts Recognized in Statement of Financial Position    
Current liabilities (324) (344)
Non-current liabilities (9,033) (13,813)
Accrued benefit cost (9,357) (14,157)
Amounts Recognized in Statement of Financial Position and Operations    
Accrued benefit liability (9,357) (14,157)
Accumulated other compensation loss 1,910 6,889
Net amount recognized (7,447) (7,268)
Items not yet Recognized as a Component of Net Periodic Pension Expense, included in AOCI    
Unrecognized net actuarial loss 1,910 6,889
Unamortized prior service costs 0 0
Net initial asset recognition 0 0
Net periodic pension expense, included in AOCI $ 1,910 $ 6,889