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v3.20.1

Summary of Business and Significant Accounting Policies (Property, Plant, and Equipment) (Details) - USD ($) | 12 Months Ended
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Jan. 31, 2020 | Jan. 31, 2019
Property, Plant and Equipment [Line Items] |  |
Repair and maintenance | $ 1,960,000 | $ 2,145,000
Depreciation and amortization expense | 5,769,000 | 5,791,000
Short-term sublease income | 40,000 | 40,000
Property, Plant And Equipment Included in AP And Accrued Expense | $ 173,000 | $ 593,000
Land Improvements [Member] | Minimum [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 5 years |
Land Improvements [Member] | Maximum [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 25 years |
Buildings and building improvements [Member] | Minimum [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 5 years |
Buildings and building improvements [Member] | Maximum [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 40 years |
Machinery and equipment [Member] | Minimum [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 3 years |
Machinery and equipment [Member] | Maximum [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 10 years |

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- Definition The aggregate costs of keeping the property in good condition but that do not appreciably prolong the life or increase the value of the property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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- Definition The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902458&loc=d3e39896-112707 + Details
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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 Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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- Definition Property, Plant And Equipment Included in AP And Accrued Expense + References No definition available. + Details
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- Details
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