Quarterly report pursuant to Section 13 or 15(d)

Construction Backlog (Details Textual)

v3.21.1
Construction Backlog (Details Textual)
3 Months Ended
Mar. 31, 2021
USD ($)
Item
Dec. 31, 2020
USD ($)
Item
Dec. 31, 2019
USD ($)
Construction Backlog (Textual)      
Total Backlog $ 22,871,480    
Construction backlog contract amount     $ 2,400,000
Contract backlog, description two contracts entered into during the third quarter of 2020 in the amount of approximately $4 million and approximately $2.95 million    
Exclusive License Agreement [Member]      
Construction Backlog (Textual)      
Number of large contracts | Item 1 3  
Contract Two [Member] | Exclusive License Agreement [Member]      
Construction Backlog (Textual)      
Construction backlog contract amount   $ 800,000  
Contract One [Member] | Exclusive License Agreement [Member]      
Construction Backlog (Textual)      
Construction backlog contract amount   2,700,000  
Contract Three [Member] | Exclusive License Agreement [Member]      
Construction Backlog (Textual)      
Construction backlog contract amount   $ 700,000