Stock-Based Compensation (Restricted Stock Units) (Details) - USD ($)	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024
Summary of restricted stock and stock unit awards
Compensation expense	$ 395,000	$ 595,000
Unrecognized compensation at cost	$ 83,000
Restricted stock units
Summary of restricted stock and stock unit awards
Granted	16,066	70,510
Restricted Stock Units
Outstanding at beginning of year	164,110	187,200
Granted	16,066	70,510
Vested	(164,110)	(93,600)
Forfeited	0	0
Outstanding at end of year	16,066	164,110
Weighted-average fair value of restricted stock units granted during the year	$ 249,826	$ 274,284
Weighted-average fair value of restricted stock units vested during the year	$ 2,482,984	$ 411,840
Weighted- average fair value of restricted stock units
Outstanding at beginning of year	$ 4.18	$ 4.40
Granted	15.55	3.89
Vested	15.13	4.40
Forfeited	0	0
Outstanding at end of year	$ 15.55	$ 4.18