Income Taxes (Income Tax Expense Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 31, 2022	Jan. 31, 2021
Income Tax Disclosure [Abstract]
Statutory	$ (782)	$ (625)
State taxes (net of federal tax)	14	9
Change in valuation allowance	12,303	(119)
State rate adjustment	(197)	(104)
Change in unrecognized tax benefits	5	(4)
Stock Compensation	48	85
Expirations of attributes	55	16
Permanent differences	(31)	11
Return to provision	(7)	(13)
Income tax expense (benefit)	$ 11,408	$ (744)

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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