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Retirement plans Cash flows (Tables) | 12 Months Ended
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Jan. 31, 2018
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Expected Benefit Payments [Table Text Block] |
Cash flows (in thousands) |  |
Expected employer contributions for the fiscal year ending January 31, 2019 |  |  | $— |
Expected employee contributions for the fiscal year ending January 31, 2019 |  | — |
Estimated future plan benefit payments reflecting expected future service for the fiscal year(s) ending January 31,: |  |
2019 |  | 349 |
2020 |  | 348 |
2021 |  | 342 |
2022 |  | 347 |
2023 |  | 347 |
2024 - 2028 |  | $1,737

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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