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Note 5 - Goodwill and Other Intangible Assets (Details Textual) $ in Thousands, € in Millions |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 22, 2021 USD ($) | Jan. 22, 2021 EUR (€) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($)
Goodwill, Written Off |  |  |  |  | $ 630 |  |
Goodwill, Acquired During Period |  |  |  |  | 0 |  |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Total |  |  |  |  | 2,000 |  | $ 900
Amortization of Intangible Assets |  |  | $ 1,500 | $ 1,500 | 3,100 | $ 3,000 |
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 |  |  |  |  |
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations [Member] | Manufacturing Facility in Japan [Member] |  |  |  |  |  |  |
Goodwill, Written Off |  |  | $ 600 |  | $ 600 |  |

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- 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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