Other Current Assets and Other Assets - Non-current (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 27, 2019	Jul. 28, 2018	Jul. 27, 2019	Jul. 28, 2018	Jan. 26, 2019
Accounts Receivable, Net	$ 796,908		$ 796,908		$ 625,258
Provision for bad debt (recovery)	(202)	$ (14)	(10,514)	$ (38)
Long-term contract assets	26,173		26,173		30,399
Deferred financing costs	8,044		8,044		9,036
Restricted cash	3,753		3,753		4,253
Insurance recoveries/receivables for accrued insurance claims	5,000		5,000		13,684
Long-term accounts receivable, net	0		0		24,815
Other non-current deposits and assets	9,619		9,619		7,251
Total other assets	$ 52,589		52,589		$ 89,438
Decrease in accrued insurance claims			$ (8,700)

Other Non-current Deposits and Assets

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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.

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Amount, before allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as noncurrent.

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The increase (decrease) in insurance liability balances during the period.

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Carrying amount due after one year of the balance sheet date (or one operating cycle, if longer) of amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy.

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Amount of noncurrent assets classified as other.

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Net amount of other deferred costs capitalized at the end of the reporting period. Does not include deferred finance costs or deferred acquisition costs of insurance companies.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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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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Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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