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Note 17 - Income Taxes - Summary of Components of Income Tax Expense for Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Federal	$ 174	$ (117)	$ (466)
State	(16)	99	49
Foreign	439	395	12
Total current income tax expense (benefit)	597	377	(405)
Federal	3,597	(2,954)	(766)
State	561	(807)	71
Foreign	(17)	132
Total deferred income tax expense (benefit)	4,141	(3,629)	(695)
Income tax expense (benefit)	$ 4,738	$ (3,252)	$ (1,100)

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