Note 16 - Income Taxes - Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Balance	$ 4,096	$ 4,233
Additions for tax positions of current year	592	593
Additions for tax positions of prior years	0	309
Decrease related to expiration of statutes of limitations	(90)	(1,039)
Balance	$ 4,598	$ 4,096

Amount of unrecognized tax benefits.

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-Name Accounting Standards Codification
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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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