Area of additional plant facility.

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Area of land held.

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Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

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Amount of contractual obligation maturing in the remainder of the fiscal year following the latest fiscal year ended.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The amount of net income (loss) reported by an equity method investment of the entity.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Investment in Unconsolidated Joint Venture - Narrative (Detail)		1 Months Ended	3 Months Ended								12 Months Ended
	Feb. 29, 2020 USD ($)	May 31, 2020 USD ($)	May 03, 2020 USD ($) ft²	Feb. 02, 2020 USD ($)	Nov. 03, 2019 USD ($)	Aug. 04, 2019 USD ($)	Apr. 28, 2019 USD ($)	Jan. 27, 2019 USD ($)	Oct. 28, 2018 USD ($)	Jul. 29, 2018 USD ($)	May 03, 2020 USD ($) ft²	Apr. 28, 2019 USD ($)	Apr. 29, 2018 USD ($)	Dec. 20, 2019 USD ($) ft²	Nov. 01, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Income (loss) from investment in unconsolidated joint venture			$ (65,000)	$ (56,000)	$ (16,000)	$ 13,000	$ (5,000)	$ 23,000	$ (55,000)	$ (77,000)	$ (125,000)	$ (114,000)	$ (266,000)
Investment in unconsolidated joint venture			$ 1,602,000				1,508,000				$ 1,602,000	1,508,000
CLIH [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage			50.00%								50.00%
Area of facility \| ft²			80,000								80,000
Area of additional plant facility \| ft²														40,000
Contractual obligation														$ 1,200,000
Payments to acquire additional plant facility	$ 600,000
Payments to acquire additional plant facility, remaining															$ 420,000
Unconsolidated joint venture, net Income (loss)											$ (250,000)	(227,000)	(532,000)
Income (loss) from investment in unconsolidated joint venture											(125,000)	(114,000)	$ (266,000)
Investment in unconsolidated joint venture			$ 1,600,000				$ 1,500,000				$ 1,600,000	$ 1,500,000
CLIH [Member] \| Subsequent Event [Member]
Schedule of Equity Method Investments [Line Items]
Payments to acquire additional plant facility		$ 180,000