Construction Backlog (Details 1)	Mar. 31, 2020 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total remaining unsatisfied performance obligations	$ 17,481,973
Within 1 year [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total remaining unsatisfied performance obligations	2,054,473
1 to 2 years [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total remaining unsatisfied performance obligations	10,285,000
Thereafter [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total remaining unsatisfied performance obligations	$ 5,142,500