Quarterly report pursuant to Section 13 or 15(d)

Concentrations (Details Textual)

v3.20.1
Concentrations (Details Textual)
3 Months Ended 12 Months Ended
Mar. 31, 2020
Customer / Integer
Supplier / Integer
Dec. 31, 2019
Customer / Integer
Supplier / Integer
10% or more of purchase [Member] | Outstanding accounts payable [Member]    
Concentrations (Textual)    
Concentration risk, percentage 93.60% 90.80%
Number of supplier | Supplier / Integer 1 1
More than 10% Revenues [Member] | Outstanding accounts and tenants receivable [Member]    
Concentrations (Textual)    
Concentration risk, percentage 88.30% 93.00%
Number of customer | Customer / Integer 2 2