Note 4 - Acquisition of Royston Group (Details Textual) - USD ($) $ in Thousands		1 Months Ended		9 Months Ended	12 Months Ended			15 Months Ended
	Feb. 26, 2026	Mar. 31, 2026	Mar. 24, 2026	Mar. 31, 2026	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2026
Business Combination, Acquisition-Related Cost, Expense					$ 8,340	$ 900	$ 735
Proceeds from Issuance of Common Stock					98,109	0	0
February Public Offering [Member]
Proceeds from Issuance of Common Stock	$ 98,100
Senior Secured Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 350,000		$ 350,000
Senior Secured Credit Facility [Member] | Term Loan [Member]
Debt Instrument, Face Amount		$ 200,000		200,000
Debt Instrument, Term (Year)		5 years
Royston [Member]
Business Combination, Consideration Transferred, Before Prefunded Estimated Cash and Working Capital			$ 325,000
Payments to Acquire Businesses, Gross			320,000
Business Combination, Consideration Transferred, Equity Interest			5,000
Business Combination, Consideration Transferred, Estimated Cash and Working Capital Prefunded			13,200
Business Combination, Consideration Transferred			338,200
Business Combination, Acquisition-Related Cost, Expense			9,900	$ 21,800
Line of Credit Facility, Maximum Borrowing Capacity			150,000
Debt Instrument, Face Amount			200,000
Business Combination, Acquired Receivable, Purchased without Credit Deterioration, Gross Contractual Amount			$ 37,200
Business Combination, Acquiree's Revenue since Acquisition Date, Actual								$ 73,500
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual								$ 2,400
Business Combination, Pro Forma Information, Pro Forma Income (Loss) from Continuing Operations, after Tax					$ 48,424	$ 56,590	$ 56,344