Quarterly report [Sections 13 or 15(d)]

Note 5 - Leases (Details Textual)

v3.25.2
Note 5 - Leases (Details Textual)
3 Months Ended 6 Months Ended
Jun. 30, 2025
USD ($)
ft²
a
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
ft²
a
Jun. 30, 2024
USD ($)
Operating Lease, Payments | $ $ 321,000 $ 307,000 $ 630,000 $ 627,000
Rolling Hills Estates [Member]        
Area of Land (Square Foot) 4,900   4,900  
HONG KONG        
Area of Land (Square Foot) | a 7,300   7,300  
Richmond, British Columbia [Member]        
Area of Land (Square Foot) 1,600   1,600  
Metuchen, New Jersey [Member]        
Area of Land (Square Foot) 2,000   2,000  
CHINA        
Lessee, Number of Branches 7   7