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Note 2 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Cash and Cash Equivalents [Table Text Block] |
Cash, Cash Equivalents and Restricted Cash |  | December 3 1 , 2019 |  |  | December 31, 2018 |
(in thousands) |  |  |  |  |  |  |  |
Cash and Cash Equivalents |  | $ | 15,682 |  |  | $ | 12,558 |
Restricted Cash included in Other Assets |  |  | 134 |  |  |  | 133 |
Cash, Cash Equivalents and Restricted Cash in the Consolidated Statement of Cash Flows |  | $ | 15,816 |  |  | $ | 12,691 |

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