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Note 12 - Income Taxes - Provision (Benefit) for Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Current:      
Federal $ 7,695 $ 2,563 $ (149)
State and local 666 929 (752)
8,361 3,492 (901)
Deferred (10,974) (1,994) (5,916)
Income tax provision (benefit) $ (2,613) $ 1,498 $ (6,817)