Note 4 - Stock Options Activity (Details) - $ / shares	3 Months Ended		6 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Balance, stock options (in shares)			950,000
Balance, stock options, weighted-average exercise price (in dollars per share)			$ 0.96
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0	350,000	0	350,000
Options granted, weighted-average exercise price (in dollars per share)			$ 0
Options canceled or expired (in shares)			(246,192)
Options canceled or expired, weighted-average exercise price (in dollars per share)			$ 1.06
Options exercise (in shares)			0
Options exercise, weighted-average exercise price (in dollars per share)			$ 0
Balance, stock options (in shares)	703,808		703,808
Balance, stock options, weighted-average exercise price (in dollars per share)	$ 0.51		$ 0.51
Stock Options Exercisable (in shares)	663,808		663,808
Stock Options Exercisable, weighted-average exercise price (in dollars per share)	$ 0.48		$ 0.48