Note 2 - Significant Transactions (Details Textual) - GKE Acquisition [Member] - USD ($) $ in Thousands		3 Months Ended
Oct. 16, 2023	Jun. 30, 2024
Payments to Acquire Businesses, Gross	$ 87,187
Business Combination, Consideration Transferred, Liabilities Incurred	9,200
Proceeds from Lines of Credit	$ 71,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		$ 6,254
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		3,820
Inventory Step-up Cost, Increase (Decrease) During Period		778
General and Administrative Expense [Member]
Amortization		532
Cost of Revenues Related to Intangibles Acquired [Member]
Amortization		$ 110
GKE GmbH and SAL GmbH [Member]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Beijing GKE Science & Technology Co. Ltd. [Member]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%

Represents increase (decrease) for inventory step-up cost during period.

No definition available.

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- Definition

The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
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-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
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-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

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- Definition

Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

+ References

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-SubTopic 30
-Name Accounting Standards Codification
-Section 50
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- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

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

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

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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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-SubTopic 30
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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

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