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Note 16 - Segment and Related Information - Net Assets by Geographic Area (Details) - Continuing Operations [Member] - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Total net assets	$ 76,681	$ 81,694
UNITED STATES
Total net assets	32,457	37,726
GERMANY
Total net assets	18,697	17,340
UNITED KINGDOM
Total net assets	8,867	11,254
Rest of the World [Member]
Total net assets	$ 16,660	$ 15,374

X

- Definition

Amount of net assets (liabilities).

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-URI http://asc.fasb.org/extlink&oid=120401555&loc=SL114874367-224272

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