Note E - Leases (Details Textual) $ in Thousands	Mar. 31, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jan. 26, 2024 USD ($)	Jan. 22, 2024	Jul. 18, 2023 USD ($) a
Operating Lease, Right-of-Use Asset	$ 41,682	$ 43,537
Operating Lease, Weighted Average Remaining Lease Term (Year)	8 years 9 months 18 days	9 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent	5.93%	5.92%
Extension on Manufacturing Facilities Lease [Member]
Operating Lease, Right-of-Use Asset					$ 25,900
Operating Lease, Liability					$ 25,900
Early Termination of Manno, Switzerland Apartment Lease [Member]
Operating Lease, Right-of-Use Asset			$ 300
Operating Lease, Liability			$ 300
New Apartment in Lugano, Switzerland [Member]
Lessee, Operating Lease, Term of Contract (Month)				27 months
California 1 [Member]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)					10 years 4 months 24 days
Area of Real Estate Property (Acre) | a					162,000
Operating Lease, Base Rent Per Square Foot					1.5
Tenant Improvements					$ 2,300
California 1 [Member] | Reimbursements For Tenant Improvements [Member]
Tenant Improvements					$ 1,100
Manno, Switzerland [Member]
Operating Lease, Weighted Average Remaining Lease Term (Year)			9 years 7 months 28 days