Retirement Plans (Funded Status) (Details) - Combined Employee Retirement Plans [Member] - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Change in Benefit Obligation
Benefit obligation at beginning of year	$ 44,178	$ 43,292
Service cost	0	0
Interest cost	1,113	1,211
Participant contributions	0	0
Amendments	0	0
Actuarial losses (gains)	(2,373)	1,588
Plan settlement	0	0
Benefits paid	(2,332)	(1,913)
Benefit obligation at end of year	40,586	44,178
Change in Plan Assets
Fair value at beginning of year	23,972	23,654
Actual return on plan assets	4,099	1,591
Company contributions	690	640
Settlements	0	0
Benefits paid	(2,332)	(1,913)
Fair value at end of year	26,429	23,972
Unfunded status of the plans	(14,157)	(20,206)
Amounts Recognized in Statement of Financial Position
Current liabilities	(344)	(364)
Non-current liabilities	(13,813)	(19,842)
Accrued benefit cost	(14,157)	(20,206)
Amounts Recognized in Statement of Financial Position and Operations
Accrued benefit liability	(14,157)	(20,206)
Accumulated other compensation loss	6,889	14,444
Net amount recognized	(7,268)	(5,762)
Items not yet Recognized as a Component of Net Periodic Pension Expense, included in AOCI
Unrecognized net actuarial loss	6,889	14,444
Unamortized prior service costs	0	0
Net initial asset recognition	0	0
Net periodic pension expense, included in AOCI	$ 6,889	$ 14,444