Note 3 - Significant Accounting Policies - Previously Reported Statements of Cash Flow (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net cash provided by operating activities	$ 23,772	$ 22,362	$ 13,065
Net cash used in investing activities	(74,903)	(39,295)	(187,656)
Net cash provided by financing activities	$ 62,199	41,127	147,609
Previously Reported [Member]
Net cash provided by operating activities		27,256	10,440
Net cash used in investing activities		(39,295)	(187,656)
Net cash provided by financing activities		$ 41,127	$ 147,609

Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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-Name Accounting Standards Codification
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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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