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 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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Note 6 - Goodwill and Other Intangible Assets (Details Textual) $ in Thousands, € in Millions			12 Months Ended
	Jan. 22, 2021 USD ($)	Jan. 22, 2021 EUR (€)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Goodwill, Acquired During Period			$ 280,925	$ 0
Amortization of Intangible Assets, Total			6,200	3,000	$ 3,500
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Total			900	0	$ 0
Europe [Member]
Goodwill, Acquired During Period			129,649	0
UNITED STATES
Goodwill, Acquired During Period			151,276	$ 0
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	$ 151,300