Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Leases (Details Textual)

v3.23.1
Note 5 - Leases (Details Textual)
3 Months Ended
Mar. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
ft²
Operating Lease, Payments | $ $ 345,000 $ 322,000
HONG KONG    
Area of Land (Square Foot)   7,300
Rolling Hills Estates [Member]    
Area of Land (Square Foot)   4,900
Richmond, British Columbia [Member]    
Area of Land (Square Foot)   1,600
Metuchen, New Jersey [Member]    
Area of Land (Square Foot)   2,000
CHINA    
Lessee, Number of Branches   7