Stock-Based Compensation (Restricted Stock Units) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Jan. 31, 2022	Jan. 31, 2021
Summary of restricted stock and stock unit awards
Unrecognized compensation at cost	$ 1,200
Restricted stock units
Summary of restricted stock and stock unit awards
Granted	68,870	94,695
Expense for 12 months ended	$ 1,013	$ 1,012
Restricted Stock Units
Outstanding at beginning of year	611,495	740,985
Granted	68,870	94,695
Vested	(259,495)	(224,185)
Forfeited	0	0
Outstanding at end of year	420,870	611,495
Weighted- average fair value of restricted stock units
Outstanding at beginning of year	$ 4.26	$ 4.54
Granted	3.63	2.64
Vested	3.55	2.60
Forfeited	0	0
Outstanding at end of year	$ 4.37	$ 4.26
2011 Plan [Member] \| Restricted stock units
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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