Note 4 - Stock Awards Outstanding (Details)	6 Months Ended
	Jul. 31, 2016 $ / shares shares
Range 1 [Member]
Range of Exercise/Grant Prices (in dollars per share)	$ 0.14
Range of Exercise/Grant Prices (in dollars per share)	$ 0.16
Number Outstanding (in shares) | shares	203,808
Weighted-Ave. Remaining Contractual Life	8 years 321 days
Weighted-Ave. Exercise/Grant Price (in dollars per share)	$ 0.15
Number Exercisable (in shares) | shares	203,808
Weighted-Ave. Exercise Price (in dollars per share)	$ 0.15
Range 2 [Member]
Number Outstanding (in shares) | shares	385,000
Weighted-Ave. Remaining Contractual Life	6 years 3 days
Weighted-Ave. Exercise/Grant Price (in dollars per share)	$ 0.40
Number Exercisable (in shares) | shares	385,000
Weighted-Ave. Exercise Price (in dollars per share)	$ 0.40
Range 3 [Member]
Number Outstanding (in shares) | shares	100,000
Weighted-Ave. Remaining Contractual Life	2 years 102 days
Weighted-Ave. Exercise/Grant Price (in dollars per share)	$ 1.09
Number Exercisable (in shares) | shares	60,000
Weighted-Ave. Exercise Price (in dollars per share)	$ 1.09
Range 4 [Member]
Number Outstanding (in shares) | shares	15,000
Weighted-Ave. Remaining Contractual Life	1 year 211 days
Weighted-Ave. Exercise/Grant Price (in dollars per share)	$ 4.53
Number Exercisable (in shares) | shares	15,000
Weighted-Ave. Exercise Price (in dollars per share)	$ 4.53
Number Outstanding (in shares) | shares	703,808
Weighted-Ave. Exercise/Grant Price (in dollars per share)	$ 0.51
Number Exercisable (in shares) | shares	663,808
Weighted-Ave. Exercise Price (in dollars per share)	$ 0.48