Retirement Plans (Periodic Pension Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Amortization of gain (loss)	$ (371)	$ (507)
Total recognized in other Comprehensive Income	(1,050)	(3,669)
Combined Employee Retirement Plans [Member]
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Net gain	(1,044)	(4,472)
Prior service cost	0	0
Amortization of gain (loss)	4	(507)
Recognized loss due to settlement	(375)	0
Amortization of initial asset	0	0
Total recognized in other Comprehensive Income	(1,415)	(4,979)
Items to be Recognized as a Component of Periodic Pension Cost for next fiscal year
Prior service cost	0	0
Net actuarial loss (gain)	(141)	6
Net periodic pension cost	(141)	6
Projected benefit obligation	27,385	32,985	$ 40,586
Accumulated benefit obligation	27,385	32,985
Fair value of plan assets	19,111	23,628	$ 26,429
Components of Net Cost
Service cost	0	0
Interest cost	1,410	1,295
Expected return on plan assets	(789)	(1,000)
Amortization of transition amount	0	0
Recognized loss due to settlement	375	0
Amortization of prior service cost	0	0
Recognized net actuarial loss	12	521
Benefit cost	1,008	$ 816
Estimated Future Benefit Payments
FYE 01-31-2025	6,344
FYE 01-31-2026	2,422
FYE 01-31-2027	2,241
FYE 01-31-2028	2,129
FYE 01-31-2029	1,847
FYE 01-31-2030 to 2034	8,459
Total	$ 23,442
Weighted Average Assumptions to Determine Benefit Obligations at Year-End
Discount rate		4.85%
Weighted Average Assumptions to Determine Net Periodic Pension Cost
Discount rate	4.85%	3.20%
Expected return on plan assets	6.00%	6.00%
Minimum | Combined Employee Retirement Plans [Member]
Weighted Average Assumptions to Determine Benefit Obligations at Year-End
Discount rate	5.15%
Maximum | Combined Employee Retirement Plans [Member]
Weighted Average Assumptions to Determine Benefit Obligations at Year-End
Discount rate	5.20%