Note E - Leases (Details Textual)	Jul. 18, 2023 USD ($) a	Dec. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)	Jan. 26, 2024 USD ($)	Jan. 22, 2024
Operating Lease, Right-of-Use Asset		$ 42,303,000	$ 43,537,000
Operating Lease, Weighted Average Remaining Lease Term (Year)		9 years	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	$ 25,900,000
Operating Lease, Liability	$ 25,900,000
Early Termination of Manno, Switzerland Apartment Lease [Member]
Operating Lease, Right-of-Use Asset				$ 300,000
Operating Lease, Liability				$ 300,000
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	2,300,000
California 1 [Member] | Reimbursements For Tenant Improvements [Member]
Tenant Improvements	$ 1,100,000
Manno, Switzerland [Member]
Operating Lease, Weighted Average Remaining Lease Term (Year)				9 years 7 months 28 days