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Condensed Consolidated Financial Statements (Details)	6 Months Ended
	Sep. 29, 2018 USD ($) segment	Mar. 31, 2018 USD ($)
Financial Statement [Line Items]
Number of operating segments | segment	1
Leases not recorded on balance sheet, percent	50.00%
Liability for anticipated lease defaults	$ 0	$ 200,000
Property Lease Guarantee [Member] | Maximum [Member]
Financial Statement [Line Items]
Maximum potential guarantee payments	$ 2,600,000

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Financial Statement [Line Items]

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Leases not recorded on balance sheet, percent

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Amount of loss contingency liability expected to be resolved after one year or beyond the normal operating cycle, if longer.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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