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Useful life of finite-lived intangible asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed.

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Note 2 - Acquisitions (Details Textual) - USD ($) $ in Thousands			3 Months Ended		9 Months Ended		12 Months Ended
	Feb. 05, 2025	Oct. 28, 2024	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025	Jun. 30, 2025
Goodwill			$ 585,503		$ 585,503		$ 610,338
Business Combination, Acquisition-Related Cost, Expense			2,513	$ 2,152	3,562	$ 20,392
McStarlite [Member]
Business Combination, Voting Equity Interest Acquired, Percentage	100.00%
Business Combination, Consideration Transferred	$ 57,000				56,963		56,963
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	24,500		24,500		24,500		24,500
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived	19,700
Goodwill	16,200		$ 16,207		16,207		16,761
Payments to Acquire Businesses, Gross					$ 57,549		$ 57,549
McStarlite [Member] \| Trade Names [Member]
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Indefinite-Lived	$ 4,800
McStarlite [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	12 years
Amran Instrument Transformers [Member]
Business Combination, Voting Equity Interest Acquired, Percentage		100.00%
Business Combination, Consideration Transferred		$ 179,700
Payments to Acquire Businesses, Gross		$ 153,700
Amran Instrument Transformers [Member] \| Common Stock [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)		152,299
Amran Instrument Transformers [Member] \| Treasury Stock, Common [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)		26
Narayan Powertech Pvt. Ltd. [Member]
Business Combination, Voting Equity Interest Acquired, Percentage		90.10%
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill		$ 136,000
Goodwill		298,400
Payments to Acquire Businesses, Gross		$ 261,900
Business Combination, Period for Right to Transfer Remaining Interest (Year)		3 years
Business Combination, Period for Right to Acquire Remaining Interest (Year)		3 years
Pro Forma Information, Interest Rate Assumption			7.70%		7.70%
Pro Forma Information, Tax Rate Assumed			22.60%		22.60%
Narayan Powertech Pvt. Ltd. [Member] \| Trade Names [Member]
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Indefinite-Lived		$ 28,700
Narayan Powertech Pvt. Ltd. [Member] \| Customer Relationships [Member]
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived		$ 107,300
Finite-Lived Intangible Asset, Useful Life (Year)		12 years