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Summary of Business and Significant Accounting Policies (Stock-Based Compensation Plans) (Details) $ in Thousands	12 Months Ended	252 Months Ended
	Jan. 31, 2021 USD ($)	Dec. 31, 2003 USD ($)	Jan. 31, 2020 USD ($)	Jan. 31, 2019 USD ($)
Accounting Policies [Abstract]
Stock dividend, return percentage (as a percent)		10.00%
Market capitalization reclassified on date of dividend declaration (percent)		10.00%
Stock conversion ratio	1.5
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stockholders' equity	$ 54,187		$ 54,818	$ 57,027
Additional Paid-in Capital
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stockholders' equity	119,655	$ 122,000	118,782	118,106
Accumulated Deficit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stockholders' equity	$ (52,042)		$ (49,810)	$ (52,192)

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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