Retirement Plans (Funded Status) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Change in Plan Assets
Company contributions	$ 800	$ 1,400
Combined Employee Retirement Plans [Member]
Change in Benefit Obligation
Benefit obligation at beg. of year	40,181	39,761
Service cost	0	0
Interest cost	1,459	1,593
Participant contributions	0	0
Amendments	0	0
Actuarial (gains) losses	(2,044)	930
Plan settlement	(2,176)	0
Benefits paid	(1,121)	(2,103)
Benefit obligation at end of year	36,299	40,181
Change in Plan Assets
Fair value at beg. of year	27,259	22,911
Actual return on plan assets	(1,557)	4,726
Company contributions	1,122	1,725
Settlements	(2,176)	0
Benefits paid	(1,121)	(2,103)
Fair value at end of year	23,527	27,259
Unfunded status of the plan	(12,772)	(12,922)
Amounts Recognized in Statement of Financial Position
Current liabilities	(322)	(346)
Non-current liabilities	(12,450)	(12,576)
Accrued benefit cost	(12,772)	(12,922)
Amounts Recognized in Statement of Financial Position and Operations
Accrued benefit liability	(12,772)	(12,922)
Accumulated other comp. loss (gain)	8,319	8,612
Net amount recognized	(4,453)	(4,310)
Items not yet Recognized as a Component of Net Periodic Pension Expense, Included in AOCI
Unrecognized net actuarial loss (gain)	8,319	8,612
Unamortized prior service costs	0	0
Net initial asset recognition	0	0
Net periodic pension expense, included in AOCI	$ 8,319	$ 8,612