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Note 4 - Business Combinations (Details Textual) - USD ($) $ in Thousands		3 Months Ended		11 Months Ended	12 Months Ended
	Jan. 22, 2021	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2021
Payments to Acquire Businesses, Net of Cash Acquired, Total		$ (0)	$ 127,709
Acquired 3D Hubs [Member]
Business Combination, Consideration Transferred, Total	$ 294,100				$ 294,122
Payments to Acquire Businesses, Net of Cash Acquired, Total	$ 127,400				127,413
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	863,995
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 166,700				166,709
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	52,800
Payments to Acquire Businesses, Gross					$ 133,847
Business Combination, Contingent Consideration, Liability, Total	$ 13,600
Acquired 3D Hubs [Member] | Cash [Member]
Payments to Acquire Businesses, Gross				$ 25,000
Acquired 3D Hubs [Member] | Common Stock [Member] | Maximum [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	143,983
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 27,800

X

- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479

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X

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

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-Publisher FASB
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X

- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
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-Subparagraph (c)(1)
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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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