Annual report pursuant to Section 13 and 15(d)

Concentrations (Details Textual)

v3.20.1
Concentrations (Details Textual)
12 Months Ended
Dec. 31, 2019
Customer / Integer
Supplier / Integer
Dec. 31, 2018
Customer / Integer
Supplier / Integer
Supplier [Member]    
Concentrations (Textual)    
Concentration risk, percentage 10.00% 10.00%
10% or more of purchase [Member] | Outstanding accounts payable [Member]    
Concentrations (Textual)    
Concentration risk, percentage 90.80% 95.50%
Number of supplier | Supplier / Integer 1 1
More than 10% Revenues [Member] | Outstanding accounts and tenants receivable [Member]    
Concentrations (Textual)    
Concentration risk, percentage 93.00% 56.00%
Number of customer | Customer / Integer 2 2