|
Note 4 - Stock-Based Compensation (Details) - Stock Awards Outstanding (USD $)
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3 Months Ended | |||||
|---|---|---|---|---|---|---|
|
Apr. 30, 2014
|
Jan. 31, 2014
|
Apr. 30, 2014
Range 1 [Member]
|
Apr. 30, 2014
Range 2 [Member]
|
Apr. 30, 2014
Range 3 [Member]
|
Apr. 30, 2014
Range 4 [Member]
|
|
| Note 4 - Stock-Based Compensation (Details) - Stock Awards Outstanding [Line Items] | ||||||
| Range of Exercise/Grant Prices | $ 0.40 | $ 1.09 | $ 4.90 | $ 10.43 | ||
| Number of Options Outstanding (in Shares) | 600,000 | 638,500 | 465,000 | 100,000 | 15,000 | 20,000 |
| Weighted-Ave. Remaining Contractual Life of Outstanding Options | 8 years 164 days | 4 years 197 days | 3 years 306 days | 2 years 51 days | ||
| Weighted-Ave. Exercise/Grant Price of Outstanding Options | $ 1.13 | $ 1.22 | $ 0.40 | $ 1.09 | $ 4.90 | $ 10.25 |
| Number of Options Exercisable (in Shares) | 560,000 | 465,000 | 60,000 | 15,000 | 20,000 | |
| Weighted-Ave. Exercise Price of Exercisable Options | $ 0.95 | $ 0.40 | $ 1.09 | $ 4.90 | $ 10.43 | |