Number of shares of equity interests issued or issuable to acquire entity.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Note 13 - Commitments and Contingencies (Details Textual) $ in Thousands, € in Millions	Dec. 30, 2016 EUR (€) shares	Sep. 21, 2015 shares	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Business Combination, Contingent Consideration, Liability, Total			$ 2,278	$ 1,084
Senhance Surgical Robotic System Acquisition [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) \| shares	286,360	1,195,647
Business Combination, Contingent Consideration, Liability, Total			$ 2,300	$ 1,100
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable \| €	€ 5