Note 8 - Stock Compensation - Stock Awards Outstanding (Details)	12 Months Ended
	Jan. 31, 2017 $ / shares shares
Number Outstanding (in shares) | shares	1,100,000
Exercisable Number Exercisable (in shares) | shares	760,000
Range 1 [Member]
Lower Range of Exercise/Grant Prices (in dollars per share)	$ 0.09
Upper Range of Exercise/Grant Prices (in dollars per share)
Number Outstanding (in shares) | shares	300,000
Weighted-Ave. Remaining Contractual Life (Year)	9 years 270 days
Weighted-Ave. Exercise/Grant Price (in dollars per share)	$ 0.09
Exercisable Number Exercisable (in shares) | shares	0
Exercisable Weighted-Ave. Exercise Price (in dollars per share)	$ 0.09
Range 2 [Member]
Lower Range of Exercise/Grant Prices (in dollars per share)	0.14
Upper Range of Exercise/Grant Prices (in dollars per share)	$ 0.16
Number Outstanding (in shares) | shares	300,000
Weighted-Ave. Remaining Contractual Life (Year)	8 years 138 days
Weighted-Ave. Exercise/Grant Price (in dollars per share)	$ 0.15
Exercisable Number Exercisable (in shares) | shares	300,000
Exercisable Weighted-Ave. Exercise Price (in dollars per share)	$ 0.15
Range 3 [Member]
Lower Range of Exercise/Grant Prices (in dollars per share)	0.40
Upper Range of Exercise/Grant Prices (in dollars per share)
Number Outstanding (in shares) | shares	385,000
Weighted-Ave. Remaining Contractual Life (Year)	5 years 182 days
Weighted-Ave. Exercise/Grant Price (in dollars per share)	$ 0.40
Exercisable Number Exercisable (in shares) | shares	385,000
Exercisable Weighted-Ave. Exercise Price (in dollars per share)	$ 0.40
Range 4 [Member]
Lower Range of Exercise/Grant Prices (in dollars per share)	1.09
Upper Range of Exercise/Grant Prices (in dollars per share)
Number Outstanding (in shares) | shares	100,000
Weighted-Ave. Remaining Contractual Life (Year)	1 year 284 days
Weighted-Ave. Exercise/Grant Price (in dollars per share)	$ 1.09
Exercisable Number Exercisable (in shares) | shares	60,000
Exercisable Weighted-Ave. Exercise Price (in dollars per share)	$ 1.09
Range 5 [Member]
Lower Range of Exercise/Grant Prices (in dollars per share)	4.53
Upper Range of Exercise/Grant Prices (in dollars per share)
Number Outstanding (in shares) | shares	15,000
Weighted-Ave. Remaining Contractual Life (Year)	1 year 29 days
Weighted-Ave. Exercise/Grant Price (in dollars per share)	$ 4.53
Exercisable Number Exercisable (in shares) | shares	15,000
Exercisable Weighted-Ave. Exercise Price (in dollars per share)	$ 4.53