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Note 2 - Acquisitions (Details Textual) - USD ($) $ in Thousands			12 Months Ended			24 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2022	Sep. 30, 2020
Payments to Acquire Businesses, Net of Cash Acquired, Total			$ 12,978	$ 27,406	$ 622
Goodwill, Ending Balance	$ 267,906		267,906	$ 278,054		$ 267,906
Standex Electronics [Member]
Payments to Acquire Businesses, Gross			3,100
Business Acquisition, Goodwill, Expected Tax Deductible Amount	2,500		2,500			2,500
Sensor Solutions [Member]
Payments to Acquire Businesses, Gross	10,016	$ 10,016
Payments to Acquire Businesses, Net of Cash Acquired, Total			9,900
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	2,780	2,800	2,780			2,780
Goodwill, Ending Balance	5,840	$ 6,001	5,840			5,840
Sensor Solutions [Member] | Customer-Related Intangible Assets [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	2,000		$ 2,000			2,000
Finite-Lived Intangible Asset, Useful Life (Year)			10 years
Sensor Solutions [Member] | Trademarks [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	800		$ 800			800
Renco Electronics [Member]
Payments to Acquire Businesses, Gross			29,613
Business Acquisition, Goodwill, Expected Tax Deductible Amount	14,000		14,000			14,000
Payments to Acquire Businesses, Net of Cash Acquired, Total			27,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	10,400		10,400			10,400
Goodwill, Ending Balance	13,991		13,991			$ 13,991
Renco Electronics [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total							$ 6,800
Finite-Lived Intangible Asset, Useful Life (Year)						12 years
Renco Electronics [Member] | Indefinite Trademarks [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	$ 3,600		3,600			$ 3,600
Horizon Scientific Inc. [Member]
Business Combination, Deferred Compensation Arrangements			$ 1,200

X

- Definition

This element represents acquisition-related costs incurred due to the effect of deferred compensation arrangements made in the course of the acquisition.

+ References

No definition available.

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X

- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
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- Definition

Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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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.

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