Retirement Plans (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
Apr. 30, 2022	Apr. 30, 2021
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan settlement	$ 0	$ 0
United States [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Minimum annual contributions per employee, percent	1.00%
Maximum annual contributions per employee, percent	75.00%
Number of common shares held	1,165,985	970,632
Contributions by employer	$ 330	$ 184

Amount of (increase) decrease to benefit obligation of defined benefit plan from remeasurement due to settlement. Excludes decrease to benefit obligation for settlement payment.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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Defined Contribution Plan, Minimum Annual Contributions Per Employee, Percent

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Defined Contribution Plan, Number of Common Shares Held

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