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Liquidity (Details)
Jun. 30, 2021
USD ($)
Liquidity [Line Items]  
Total Backlog $ 21,035,831
Within 1 year [Member]  
Liquidity [Line Items]  
Total Backlog 8,179,581
1 to 2 years [Member]  
Liquidity [Line Items]  
Total Backlog $ 12,856,250