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Summary of Business and Significant Accounting Policies (Stock-Based Compensation Plans) (Details) $ in Thousands	12 Months Ended
	Jan. 31, 2019 USD ($)	Jan. 31, 2018 USD ($)	Jan. 31, 2017 USD ($)	Jan. 31, 2003 USD ($)
Accounting Policies [Abstract]
Stock dividend, return percentage (as a percent)	10.00%
Stock conversion ratio	1.5
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stockholders' equity	$ 57,027	$ 58,712	$ 59,354
Additional Paid-in Capital
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stockholders' equity	118,106	117,465	116,976	$ 122,000
Accumulated Deficit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stockholders' equity	$ (52,192)	$ (49,648)	$ (46,380)

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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.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 4.E)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(31))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Subparagraph (SX 210.5-02(29))
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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
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Stock Dividend, Return Percentage

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