Accounts Receivable (Details) - USD ($) $ in Thousands	Jul. 28, 2018	Jan. 28, 2018	Jan. 27, 2018
Receivables [Abstract]
Trade accounts receivable	$ 326,269		$ 300,271
Unbilled accounts receivable	341,971		0
Retainage	17,570		19,411
Total	685,810		319,682
Less: allowance for doubtful accounts	(948)		(998)
Accounts receivable, net	$ 684,900	$ 630,400	$ 318,700

Contract Receivable Retainage and Other Receivables

No definition available.

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- Definition

For unclassified balance sheet, amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business.

+ References

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-Publisher FASB
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- Definition

For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

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- Definition

For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

+ References

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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.

+ References

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- Definition

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.

+ References

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