Stock-Based Compensation (Restricted Stock Units) (Details) - USD ($)	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Summary of restricted stock and stock unit awards
Compensation expense	$ 595,000	$ 612,000
Unrecognized compensation at cost	$ 229,000
Restricted stock units
Summary of restricted stock and stock unit awards
Granted	70,510	0
Restricted Stock Units
Outstanding at beginning of year	187,200	420,870
Granted	70,510	0
Vested	(93,600)	(233,670)
Forfeited	0	0
Outstanding at end of year	164,110	187,200
Weighted-average fair value of restricted stock units granted during the year	$ 274,284	$ 0
Weighted-average fair value of restricted stock units vested during the year	$ 411,840	$ 892,619
Weighted- average fair value of restricted stock units
Outstanding at beginning of year	$ 4.40	$ 4.37
Granted	3.89	0
Vested	4.40	3.82
Forfeited	0	0
Outstanding at end of year	$ 4.18	$ 4.40