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Revenue Recognition Contract with Customer, Asset and Liability (Details) $ in Thousands	3 Months Ended
	Aug. 03, 2019 USD ($)	Apr. 27, 2019 USD ($)
Revenue from Contract with Customer [Abstract]
Contract assets	$ 42,809	$ 33,704
Contract liabilities - current	53,421	47,178
Contract liabilities - noncurrent	10,140	$ 10,053
Dollar Change
Contract assets	9,105
Contract liabilities - current	6,243
Contract liabilities - noncurrent	$ 87
Change in Contract with Customer, Asset and Liability, Percentage [Abstract]
Contract assets percent change	27.00%
Contract liabilities, current, percent change	13.20%
Contract liabilities, noncurrent, percent change	0.90%
Number of Loss on Contracts	4	6
Provision for Loss on Contracts	$ 531	$ 2,353
Revenue recognized related to contract liability	$ 31,259

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Number of Loss on Contracts

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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.

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Cumulative provision for contract losses not offset against related costs accumulated on the balance sheet.

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