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Note 1 - Organization and Significant Accounting Policies - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Balance		$ 46,200	$ 22,321
Balance		44,841	46,200
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance		(1,604)	(1,370)
Foreign currency translation adjustments (1)	[1]	(124)	(234)
Balance		$ (1,728)	$ (1,604)
[1] In all periods presented, there were no tax impacts related to functional currency translation adjustments.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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