Retirement Plans (Funded Status) (Details) - Combined Employee Retirement Plans [Member] - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Change in Benefit Obligation
Benefit obligation at beginning of year	$ 32,985	$ 40,586
Service cost	0	0
Interest cost	1,410	1,295
Participant contributions	0	0
Amendments	0	0
Actuarial gains	(115)	(6,892)
Plan settlement	0	0
Benefits paid	(6,895)	(2,004)
Benefit obligation at end of year	27,385	32,985
Change in Plan Assets
Fair value at beginning of year	23,628	26,429
Actual return on plan assets	1,702	(1,428)
Company contributions	676	631
Settlements	0	0
Benefits paid	(6,895)	(2,004)
Fair value at end of year	19,111	23,628
Unfunded status of the plans	(8,274)	(9,357)
Amounts Recognized in Statement of Financial Position
Current liabilities	(314)	(324)
Non-current liabilities	(7,960)	(9,033)
Accrued benefit cost	(8,274)	(9,357)
Amounts Recognized in Statement of Financial Position and Operations
Accrued benefit liability	(8,274)	(9,357)
Accumulated other compensation loss	495	1,910
Net amount recognized	(7,779)	(7,447)
Items not yet Recognized as a Component of Net Periodic Pension Expense, included in AOCI
Unrecognized net actuarial loss	495	1,910
Unamortized prior service costs	0	0
Net initial asset recognition	0	0
Net periodic pension expense, included in AOCI	$ 495	$ 1,910