Note 4 - Fair Value Measurements (Details Textual) € in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2024 EUR (€)
Senhance Surgical Robotic System Acquisition[Member] | Minimum [Member]
Business Combination Contingent Consideration Arrangements Target Revenue | $	$ 25
Merger Agreement [Member]
Business Combination, Contingent Consideration Arrangements, Assumed Percentage Probability	90.00%	90.00%
Merger Agreement [Member] | Minimum [Member]
Business Combination Contingent Consideration Arrangements Target Revenue | €		€ 25