Note 12 - Income Taxes - Summary of Provision for Income Taxes (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current	$ 1,086,000	$ (211,000)	$ 219,000
Deferred	529,000	1,740,000	1,524,000
Enactment of federal tax reform			1,136,000
Total provision for income taxes	$ 1,615,000	$ 1,529,000	$ 2,879,000

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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