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Note 1 - Basis of Presentation - Components of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Jun. 30, 2019
Dec. 31, 2018
Cash and Cash Equivalents $ 5,568 $ 15,682 $ 19,481  
Restricted Cash included in Other Assets 134 134 133  
Cash, Cash Equivalents and Restricted Cash in the Consolidated Statement of Cash Flows $ 5,702 $ 15,816 $ 19,614 $ 12,691