Retirement Plans (Periodic Pension Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Amortization of loss	$ (507)	$ (1,774)
Total recognized in other Comprehensive Income	(3,669)	(7,556)
Combined Employee Retirement Plans [Member]
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Net loss	(4,472)	(5,782)
Prior service cost	0	0
Amortization of loss	(507)	(1,774)
Amortization of prior service cost (credit)	0	0
Amortization of initial asset	0	0
Total recognized in other Comprehensive Income	(4,979)	(7,556)
Items to be Recognized as a Component of Periodic Pension Cost for next fiscal year
Prior service cost	0	0
Net actuarial loss	6	536
Net periodic pension cost	6	536
Projected benefit obligation	32,985	40,586	$ 44,178
Accumulated benefit obligation	32,985	40,586
Fair value of plan assets	23,628	26,429	$ 23,972
Components of Net Cost
Service cost	0	0
Interest cost	1,295	1,113
Expected return on plan assets	(1,000)	(690)
Amortization of transition amount	0	0
Recognized (gain) loss due to settlement	0	0
Amortization of prior service cost	0	0
Recognized net actuarial loss	521	1,774
Benefit cost	816	$ 2,197
Estimated Future Benefit Payments
FYE 01-31-2024	6,234
FYE 01-31-2025	3,272
FYE 01-31-2026	2,581
FYE 01-31-2027	2,449
FYE 01-31-2028	2,397
FYE 01-31-2029 to 2033	10,289
Total	$ 27,222
Weighted Average Assumptions to Determine Benefit Obligations at Year-End
Discount rate	4.85%	3.20%
Weighted Average Assumptions to Determine Net Periodic Pension Cost
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		2.75%
Weighted Average Assumptions to Determine Net Periodic Pension Cost
Discount rate	3.20%
Maximum | Combined Employee Retirement Plans [Member]
Weighted Average Assumptions to Determine Benefit Obligations at Year-End
Discount rate		2.80%