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Note 5 - Discontinued Operations - Income (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Income from discontinued operations before income taxes         $ 936
Income tax benefit from discontinued operations         0 (441)
Income from discontinued operations $ (443) $ 0 $ 34 $ 1,786 1,377
Denville [Member]            
Revenues           893
Cost of revenues           (534)
Operating and other expenses           (674)
Gain on disposal of discontinued operations           1,251
Income from discontinued operations before income taxes           936
Income tax benefit from discontinued operations           (441)
Income from discontinued operations           $ 1,377