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Note 12 - Income Taxes - Reconciliation of Uncertain Tax Positions (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Balance - beginning of year	$ 652,000	$ 1,189,000
Additions based on tax positions related to the current year	58,000	67,000
Additions for tax positions of prior years	118,000	520,000
Reductions for tax positions of prior years	(53,000)
Settlements		(165,000)
Lapse in statutes of limitations	(96,000)	(959,000)
Uncertain tax positions, ending balance	$ 679,000	$ 652,000

X

- Definition

Amount of unrecognized tax benefits.

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