Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Leases (Details Textual)

v3.21.2
Note 5 - Leases (Details Textual)
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
ft²
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
ft²
Sep. 30, 2020
USD ($)
Operating Lease, Payments | $ $ 327,000 $ 342,000 $ 1,000,000.0 $ 1,200,000
HONG KONG        
Area of Land (Square Foot) 7,300   7,300  
Rolling Hills Estates [Member]        
Area of Land (Square Foot) 4,900   4,900  
Lessee, Operating Lease, Renewal Term (Year) 5 years   5 years  
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 8   8