Note 2 - Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands |
Jan. 31, 2020 |
Jan. 31, 2019 |
|---|---|---|
| Cash and cash equivalents | $ 13,371 | $ 10,156 |
| Restricted cash | 1,287 | 2,581 |
| Cash, cash equivalents and restricted cash shown in the statement of cash flows | $ 14,658 | $ 12,737 |