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Benefit Plans and Stock-Based Compensation - Summary of Status of Stock Options (Detail) - $ / shares | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 30, 2019 | Mar. 31, 2018 | Mar. 25, 2017 | Mar. 26, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Weighted average exercise price | $ 1.14 | $ 1.13 | $ 1.13 | $ 1.02
Range One [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Exercise price, Upper limit | 0.78 |  |  |
Range Two [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Exercise price, Upper limit | 0.84 |  |  |
Range Three [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Exercise price, Upper limit | 0.89 |  |  |
Range Four [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Exercise price, Upper limit | 1.04 |  |  |
Range Five [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Exercise price, Upper limit | 1.05 |  |  |
Range Six [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Exercise price, Upper limit | 1.25 |  |  |
Range Seven [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Exercise price, Upper limit | 1.43 |  |  |
Range Eight [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Exercise price, Upper limit | 1.66 |  |  |
Range Nine [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Exercise price, Upper limit | $ 1.94 |  |  |
Options Outstanding [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 741,060 |  |  |
Options outstanding, Weighted average remaining life (years) | 5 years 2 months 12 days |  |  |
Options outstanding, Weighted average exercise price | $ 1.14 |  |  |
Options Outstanding [Member] | Range One [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 175,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 6 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) | 4 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 | 25,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 3 years 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 | 150,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 2 years 9 months 18 days |  |  |
Options outstanding, Weighted average exercise price | $ 1.04 |  |  |
Options Outstanding [Member] | Range Five [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 3,060 |  |  |
Options outstanding, Weighted average remaining life (years) | 1 year |  |  |
Options outstanding, Weighted average exercise price | $ 1.05 |  |  |
Options Outstanding [Member] | Range Six [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 30,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 1 year 6 months |  |  |
Options outstanding, Weighted average exercise price | $ 1.25 |  |  |
Options Outstanding [Member] | Range Seven [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 168,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 7 years 7 months 6 days |  |  |
Options outstanding, Weighted average exercise price | $ 1.43 |  |  |
Options Outstanding [Member] | Range Eight [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 40,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 4 years 6 months |  |  |
Options outstanding, Weighted average exercise price | $ 1.66 |  |  |
Options Outstanding [Member] | Range Nine [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 50,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 5 years 9 months 18 days |  |  |
Options outstanding, Weighted average exercise price | $ 1.94 |  |  |
Options Exercisable [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 685,059 |  |  |
Options exercisable, Weighted average exercise price | $ 1.14 |  |  |
Options Exercisable [Member] | Range One [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 175,000 |  |  |
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 | 25,000 |  |  |
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 | 150,000 |  |  |
Options exercisable, Weighted average exercise price | $ 1.04 |  |  |
Options Exercisable [Member] | Range Five [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 3,060 |  |  |
Options exercisable, Weighted average exercise price | $ 1.05 |  |  |
Options Exercisable [Member] | Range Six [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 30,000 |  |  |
Options exercisable, Weighted average exercise price | $ 1.25 |  |  |
Options Exercisable [Member] | Range Seven [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 111,999 |  |  |
Options exercisable, Weighted average exercise price | $ 1.43 |  |  |
Options Exercisable [Member] | Range Eight [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 40,000 |  |  |
Options exercisable, Weighted average exercise price | $ 1.66 |  |  |
Options Exercisable [Member] | Range Nine [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 50,000 |  |  |
Options exercisable, Weighted average exercise price | $ 1.94 |  |  |

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