Retirement Plans (Periodic Pension Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Amortization of loss	$ (1,774)	$ (1,831)
Total recognized in other Comprehensive Income	(7,556)	(726)
Combined Employee Retirement Plans [Member]
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Net (gain) loss	(5,782)	849
Prior service cost	0	0
Amortization of loss	(1,774)	(1,831)
Amortization of prior service cost (credit)	0	0
Amortization of initial asset	0	0
Total recognized in other Comprehensive Income	(7,556)	(982)
Items to be Recognized as a Component of Periodic Pension Cost for next fiscal year
Prior service cost	0	0
Net actuarial loss	536	1,771
Net periodic pension cost	536	1,771
Projected benefit obligation	40,586	44,178	$ 43,292
Accumulated benefit obligation	40,586	44,178
Fair value of plan assets	26,429	23,972	$ 23,654
Components of Net Cost
Service cost	0	0
Interest cost	1,113	1,211
Expected return on plan assets	(690)	(869)
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	1,774	1,831
Benefit cost	2,197	$ 2,173
Estimated Future Benefit Payments
FYE 01-31-2023	6,264
FYE 01-31-2024	3,012
FYE 01-31-2025	3,231
FYE 01-31-2026	2,649
FYE 01-31-2027	2,597
FYE 01-31-2028 to 2032	11,387
Total	$ 29,140
Weighted Average Assumptions to Determine Benefit Obligations at Year-End
Discount rate	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	2.75%	3.00%
Maximum | Combined Employee Retirement Plans [Member]
Weighted Average Assumptions to Determine Benefit Obligations at Year-End
Discount rate		2.80%
Weighted Average Assumptions to Determine Net Periodic Pension Cost
Discount rate	2.80%	3.05%