Note 16 - Income Taxes - Summary of Reconciliation of Income Tax Expense (Benefit) at the Federal Statutory Rate (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Computed federal income taxes at the statutory rate			$ 1,616	$ 2,335
State income taxes (net of Federal benefit)			731	824
Enacted rate change		$ (703)		(703)
Alternative minimum tax sequestration	$ (569)			(569)
Other			415	236
Stock-based compensation			23	(40)
Change in valuation allowance			(20)	(42)
Total income tax expense			$ 2,765	$ 2,041

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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