Note 6 - Supplier Concentration (Details Textual) - USD ($) |
1 Months Ended | 3 Months Ended | ||
|---|---|---|---|---|
May 28, 2014 |
Apr. 30, 2016 |
Apr. 30, 2016 |
Jan. 31, 2016 |
|
| Pillsbury Winthrop Shaw Pittman L L P [Member] | ||||
| Gain (Loss) Related to Litigation Settlement | $ 0 | |||
| Lump Sum Legal Fee | 1,500,000 | |||
| Accrued Professional Fees | $ 400,000 | |||
| Interest Rate for Outstanding Legal Fees Payable Solely with Settlement | 20.00% | |||
| Pillsbury Winthrop Shaw Pittman L L P [Member] | Litigation Reserve [Member] | ||||
| Liabilities, Current | $ 100,000 | $ 100,000 | ||
| Pillsbury Winthrop Shaw Pittman L L P [Member] | ||||
| Payments for Legal Settlements | 0.40 | 400,000 | ||
| Liabilities, Current | $ 1,034,000 | $ 1,034,000 | $ 1,570,000 |