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Benefit Plans and Stock-Based Compensation - Summary of Status of Stock Options (Detail) - $ / shares	12 Months Ended
	Mar. 25, 2023	Mar. 26, 2022	Mar. 27, 2021	Mar. 27, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, Weighted average exercise price	$ 1.02	$ 1.09	$ 1.13	$ 1.14
Options Outstanding [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, Number outstanding	32,000
Options outstanding, Weighted average remaining life (years)	2 years 10 months 24 days
Options outstanding, Weighted average exercise price	$ 1.02
Options Outstanding [Member] | Range One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, Number outstanding	20,000
Options outstanding, Weighted average remaining life (years)	2 years 6 months
Options outstanding, Weighted average exercise price	$ 0.78
Options Outstanding [Member] | Range Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, Number outstanding	12,000
Options outstanding, Weighted average remaining life (years)	3 years 7 months 6 days
Options outstanding, Weighted average exercise price	$ 1.43
Options Exercisable [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercisable, Number exercisable	32,000
Options exercisable, Weighted average exercise price	$ 1.02
Options Exercisable [Member] | Range One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercisable, Number exercisable	20,000
Options exercisable, Weighted average exercise price	$ 0.78
Options Exercisable [Member] | Range Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercisable, Number exercisable	12,000
Options exercisable, Weighted average exercise price	$ 1.43

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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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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(iii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Name Accounting Standards Codification
-Topic 718
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-Paragraph 2
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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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