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Benefit Plans and Stock-Based Compensation - Summary of Status of Stock Options (Detail) - $ / shares | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 27, 2021 | Mar. 28, 2020 | Mar. 30, 2019 | Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Weighted average exercise price | $ 1.04 | $ 1.13 | $ 1.14 | $ 1.13
Options Outstanding [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 395,147 |  |  |
Options outstanding, Weighted average remaining life (years) | 3 years 2 months 12 days |  |  |
Options outstanding, Weighted average exercise price | $ 1.04 |  |  |
Options Outstanding [Member] | Range One [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 145,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 4 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 | 100,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 2 years 1 month 6 days |  |  |
Options outstanding, Weighted average exercise price | $ 0.84 |  |  |
Options Outstanding [Member] | Range Three [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 5,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 1 year 7 months 6 days |  |  |
Options outstanding, Weighted average exercise price | $ 0.89 |  |  |
Options Outstanding [Member] | Range Four [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 142,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 5 years 7 months 6 days |  |  |
Options outstanding, Weighted average exercise price | $ 1.43 |  |  |
Options Outstanding [Member] | Range Five [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 3,147 |  |  |
Options outstanding, Weighted average remaining life (years) | 2 years 6 months |  |  |
Options outstanding, Weighted average exercise price | $ 1.66 |  |  |
Options Exercisable [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 395,147 |  |  |
Options exercisable, Weighted average exercise price | $ 1.04 |  |  |
Options Exercisable [Member] | Range One [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 145,000 |  |  |
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 | 100,000 |  |  |
Options exercisable, Weighted average exercise price | $ 0.84 |  |  |
Options Exercisable [Member] | Range Three [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 5,000 |  |  |
Options exercisable, Weighted average exercise price | $ 0.89 |  |  |
Options Exercisable [Member] | Range Four [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 142,000 |  |  |
Options exercisable, Weighted average exercise price | $ 1.43 |  |  |
Options Exercisable [Member] | Range Five [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 3,147 |  |  |
Options exercisable, Weighted average exercise price | $ 1.66 |  |  |

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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://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) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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 http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition 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. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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