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Income Taxes (Income Tax Expense Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Income Tax Disclosure [Abstract]
Statutory	$ (625)	$ 585
State taxes (net of federal tax)	9	400
Change in valuation allowance	(119)	(573)
State rate adjustment	(104)	(291)
Change in unrecognized tax benefits	(4)	20
Stock Compensation	85	(28)
Expirations of attributes	16	345
Permanent differences	11	(17)
Return to provision	(13)	(96)
Income tax expense (benefit)	$ (744)	$ 345

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Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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