Contract Assets and Contract Liabilities - Schedule of Costs Estimated Earnings and Billings on Uncompleted Contract (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 30, 2017
Contract Assets And Contract Liabilities - Schedule Of Costs Estimated Earnings And Billings On Uncompleted Contract
Costs incurred on uncompleted contracts	$ 34,848	$ 57,916
Estimated earnings on uncompleted contracts	6,135	15,423
Earned revenues	40,983	73,339
Less: billings to date	34,907	69,400
Net costs and estimated earnings in excess of billings on uncompleted contracts	6,076	3,939
Contract assets	6,993	5,273
Contract liabilities	(917)	(1,334)
Net contract assets	$ 6,076	$ 3,939

No definition available.

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Amount of receivable reflecting the cost incurred on uncompleted contracts which is expected to be collected within one year or the normal operating cycle, if longer.

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Amount of receivable reflecting the estimated earnings (losses) on uncompleted contracts which is expected to be collected within one year or the normal operating cycle, if longer.

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Net contract assets.

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- Definition

Amounts due for billed services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the Company and, at a minimum, one other party. An example would be amounts billed to customers under contracts or programs but not paid as of the balance sheet date.

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Liability attributable to (i) billings in excess of costs under the percentage of completion contract accounting method representing the difference between contractually invoiced amounts (billings) and revenue recognized based, for example, on costs incurred to estimated total costs at period end or (ii) contractually invoiced amounts (billings) in excess of costs incurred and accumulated under the completed contract accounting method that are expected to be realized within one year or one operating cycle, whichever is longer, from the reporting date.

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Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings which is expected to be collected within one year or the normal operating cycle, if longer.

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Amount to be collected within one year of the balance sheet date (or one operating cycle, if longer) from customers in accordance with the contractual provisions of long-term contracts or programs including amounts billed and unbilled as of the balance sheet date.

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Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

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