Contracts (Tables)

12 Months Ended

Dec. 30, 2017

Contractors [Abstract]

Schedule of Costs Estimated Earnings and Billings on Uncompleted Contracts

Costs, estimated earnings and billings on uncompleted contracts consist of the following at December 30, 2017 and December 31, 2016 (amounts in thousands):

	2017			2016
Costs incurred on uncompleted contracts	$	57,916		$	58,933
Estimated earnings on uncompleted contracts		15,423			24,694
Earned revenues		73,339			83,627
Less: billings to date		69,400			82,564
Net costs in excess of billings on uncompleted contracts	$	3,939		$	1,063
Costs and estimated earnings in excess of billings on uncompleted contracts	$	5,273		$	2,434
Billings in excess of costs and estimated earnings on uncompleted contracts		(1,334	)		(1,371	)
Net costs in excess of billings on uncompleted contracts	$	3,939		$	1,063