Quarterly report pursuant to Section 13 or 15(d)

Business Segment Information - Summary of Identifiable Assets by Segment (Details)

v3.19.1
Business Segment Information - Summary of Identifiable Assets by Segment (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Segment Reporting Information [Line Items]    
Identifiable Assets $ 130,964,701 $ 112,548,475
Operating Segments | Electrical construction    
Segment Reporting Information [Line Items]    
Identifiable Assets 110,523,633 93,625,017
Operating Segments | Real estate development    
Segment Reporting Information [Line Items]    
Identifiable Assets 14,104,568 14,557,323
Corporate    
Segment Reporting Information [Line Items]    
Identifiable Assets $ 6,336,500 $ 4,366,135