Income Taxes (Components of Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Current
Federal	$ 0	$ (24)
State	136	102
Current income tax benefit (expense)	136	78
Deferred
Federal	442	(247)
State	340	(165)
Total deferred income taxes	782	(412)
Change in valuation allowance	(573)	831
Deferred income taxes	209	419
Income tax expense (benefit)	$ 345	$ 497