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Commitments and Contingencies - Leases (Details) - USD ($) $ in Thousands	6 Months Ended
	Oct. 27, 2018	Oct. 28, 2017
Operating Leased Assets
Operating leases, rent expense	$ 1,724	$ 1,715
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity
2019	1,611
2020	2,770
2021	2,398
2022	1,646
2023	249
Thereafter	296
Total	8,970
March 31, 2017 to March 31, 2022
Operating Leased Assets
Operating leases, purchase option price	9,000
April 1, 2022 to March 31, 2023
Operating Leased Assets
Operating leases, purchase option price	9,090
April 1, 2023 to March 31, 2024
Operating Leased Assets
Operating leases, purchase option price	$ 9,180

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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