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Note 1 - Basis of Presentation and Accounting Policies (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	6 Months Ended
	May 31, 2026	May 31, 2026	Jun. 30, 2026	Jun. 30, 2025
Proceeds from Issuance of Common Stock			$ 441,643	$ 0
Enercon Technologies, Ltd [Member]
Remaining Acquisition Expenses, Percent	20.00%	20.00%
Credit and Security Agreement with KeyBank [Member] \| Revolving Credit Facility [Member]
Repayments of Debt		$ 197,500
Follow-On Public Offering [Member] \| Common Class B [Member]
Stock Issued During Period, Shares, New Issues (in shares)		1,725,000
Shares Issued, Price Per Share (in dollars per share)	$ 266	$ 266
Proceeds from Issuance of Common Stock		$ 458,900
Underwriter Discounts and Commisions		17,200
Proceeds From Issuance of Common Stock, Net		$ 441,600
Over-Allotment Option [Member] \| Common Class B [Member]
Stock Issued During Period, Shares, New Issues (in shares)	225,000