Revenue - Contract Assets and Liabilities (Details) - USD ($)	3 Months Ended
Jul. 27, 2019	Apr. 27, 2019
Contract with Customer, Asset and Liability [Abstract]
Unbilled receivables	$ 800,000	$ 800,000
Unbilled receivables recorded into accounts receivable	(800,000)
Impairment of contract assets	0
Deferred revenue	300,000	$ 300,000
Deferred revenue recorded into revenue	$ 0

No definition available.

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- Definition

Amount of credit loss recognized for write-down of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

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-Publisher FASB
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- Definition

Amount, after 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.

+ References

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- Definition

Amount of decrease in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time from transfer to receivable due to right to consideration becoming unconditional.

+ References

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Balance Type:	credit
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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

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