Note 3 - Acquisition of Astero Bio Corporation - Consideration Transferred (Details) - Astero [Member] $ in Thousands	Apr. 01, 2019 USD ($)
Cash consideration	$ 12,521
Contingent consideration	1,931
Working capital adjustment	(71)
Total consideration transferred	$ 14,381

Amount of working capital adjustment associated with the acquisition of business during the period.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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