Costs and Estimated Earnings on Uncompleted Contracts (Tables)

12 Months Ended

Dec. 31, 2017

Contractors [Abstract]

Costs in Excess of Billings and Billings in Excess of Costs

Long-term fixed-price electrical construction contracts in progress accounted for using the percentage-of-completion method as of December 31 for the years as indicated:

	2017			2016
Costs incurred on uncompleted contracts	$	48,681,608		$	47,282,570
Estimated earnings	16,076,125			18,644,216
	64,757,733			65,926,786
Less billings to date	58,849,655			59,458,744
Total	$	5,908,078		$	6,468,042
Included in the consolidated balance sheets under the following captions
Costs and estimated earnings in excess of billings on uncompleted contracts	$	6,074,346		$	7,313,099
Billings in excess of costs and estimated earnings on uncompleted contracts	(166,268		)	(845,057		)
Total	$	5,908,078		$	6,468,042