Uncompleted Contracts - Summary of Cost, Estimated Earnings and Billings on Uncompleted Contracts (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Contractors [Abstract]
Costs incurred on uncompleted contracts	$ 2,042,082	$ 2,193,406
Estimated earnings	946,868	629,086
Costs and estimated earnings earned on uncompleted contracts	2,988,950	2,822,492
Billings to date	2,616,487	2,558,700
Costs and estimated earnings in excess of billings on uncompleted contracts	372,463	263,792
Costs and earnings in excess of billings on completed contracts	396,515	255,426
Costs in excess of billings	80,826	91,904
Billings in excess of cost	(104,718)	(83,538)
Billings on Uncompleted Contracts total	$ (24,052)	$ 8,366