Note 6 - Goodwill and Other Intangible Assets (Details Textual) $ in Thousands, € in Millions			12 Months Ended
	Jan. 22, 2021 USD ($)	Jan. 22, 2021 EUR (€)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Goodwill, Acquired During Period				$ 280,925
Amortization of Intangible Assets			$ 6,000	6,200	$ 3,000
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Total			1,700	900	0
Europe [Member]
Goodwill, Impairment Loss			118,008	0	$ 0
Goodwill, Acquired During Period				130,817
UNITED STATES
Goodwill, Acquired During Period				150,108
Acquired 3D Hubs [Member]
Goodwill, Acquired During Period				$ 280,900
Acquired 3D Hubs [Member] | Europe [Member]
Goodwill, Acquired During Period | €		€ 106.5
Acquired 3D Hubs [Member] | UNITED STATES
Goodwill, Acquired During Period	$ 150,100
Europe and Japan Reporting Units [Member]
Goodwill, Impairment Loss			$ 126,600