Stock-Based Compensation (Restricted Stock Units) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Jan. 31, 2021	Jan. 31, 2020
Summary of restricted stock and stock unit awards
Unrecognized compensation at cost	$ 1,900
Restricted Stock Units [Member]
Summary of restricted stock and stock unit awards
Granted	94,695	547,385
Expense for 12 months ended	$ 1,012	$ 924
Restricted Stock Units
Outstanding at beginning of year	740,985	501,155
Granted	94,695	547,385
Vested	(224,185)	(223,555)
Forfeited	0	(84,000)
Outstanding at end of year	611,495	740,985
Weighted- average fair value of restricted stock units
Outstanding at beginning of year	$ 4.54	$ 4.44
Granted	2.64	4.38
Vested	2.60	4.45
Forfeited	0	4.51
Outstanding at end of year	$ 4.26	$ 4.54
2011 Plan [Member] \| Restricted Stock Units [Member]
Summary of restricted stock and stock unit awards
Granted	0
Restricted Stock Units
Granted	0
Vested	(119,200)
Forfeited	0

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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