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Note 5 - Goodwill and Other Intangible Assets (Details Textual) $ in Thousands, € in Millions			3 Months Ended		12 Months Ended
	Jan. 22, 2021 USD ($)	Jan. 22, 2021 EUR (€)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Goodwill, Acquired During Period			$ 0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Total			1,200		$ 900
Amortization of Intangible Assets			$ 1,500	$ 1,500
Acquired 3D Hubs [Member] | Europe [Member]
Goodwill, Acquired During Period | €		€ 106.5
Acquired 3D Hubs [Member] | UNITED STATES
Goodwill, Acquired During Period	$ 151,300
Finite-Lived Intangible Assets Acquired	$ 16,600	€ 11.6

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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