Note 18 - Stock Option Plans - Restricted Stock (Details) - Restricted Stock [Member] shares in Thousands	12 Months Ended
	Jan. 31, 2023 $ / shares shares
Unvested, shares (in shares) | shares	19
Unvested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 2.51
Granted, shares (in shares) | shares	11
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.00
Vested, shares (in shares) | shares	(19)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 2.51
Canceled, shares (in shares) | shares	0
Canceled, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0
Unvested, shares (in shares) | shares	11
Unvested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.00