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Note 22 - Segment and Related Information - Net Assets by Geographic Area (Details) - Continuing Operations [Member] - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Total net assets | $ 81,694 | $ 82,724
UNITED STATES |  |
Total net assets | 37,726 | 38,921
GERMANY |  |
Total net assets | 17,340 | 17,261
UNITED KINGDOM |  |
Total net assets | 11,254 | 10,473
Rest of the World [Member] |  |
Total net assets | $ 15,374 | $ 16,069

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