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Benefit Plans and Stock-Based Compensation - Summary of Status of Stock Options (Detail) - $ / shares | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 25, 2017 | Mar. 26, 2016 | Mar. 28, 2015 | Mar. 29, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Weighted average exercise price | $ 1.13 | $ 1.02 | $ 1.15 | $ 1.21
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, Lower limit | 1.04 |  |  |
Exercise price, Upper limit | 1.05 |  |  |
Range Five [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Exercise price, Lower limit | 1.25 |  |  |
Exercise price, Upper limit | 1.66 |  |  |
Range Six [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Exercise price, Upper limit | 1.43 |  |  |
Range Seven [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 | 874,162 |  |  |
Options outstanding, Weighted average remaining life (years) | 8 years 2 months 12 days |  |  |
Options outstanding, Weighted average exercise price | $ 1.13 |  |  |
Options Outstanding [Member] | Range One [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 225,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 8 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) | 6 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 | 55,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 5 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 | 156,162 |  |  |
Options outstanding, Weighted average remaining life (years) | 4 years 8 months 12 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 | 70,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 5 years 2 months 12 days |  |  |
Options outstanding, Weighted average exercise price | $ 1.48 |  |  |
Options Outstanding [Member] | Range Six [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding, Number outstanding | 218,000 |  |  |
Options outstanding, Weighted average remaining life (years) | 9 years 8 months 12 days |  |  |
Options outstanding, Weighted average exercise price | $ 1.43 |  |  |
Options Outstanding [Member] | Range Seven [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) | 7 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 | 489,491 |  |  |
Options exercisable, Weighted average exercise price | $ 1.07 |  |  |
Options Exercisable [Member] | Range One [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 74,996 |  |  |
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 | 55,000 |  |  |
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 | 156,162 |  |  |
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 | 70,000 |  |  |
Options exercisable, Weighted average exercise price | $ 1.48 |  |  |
Options Exercisable [Member] | Range Seven [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercisable, Number exercisable | 33,333 |  |  |
Options exercisable, Weighted average exercise price | $ 1.94 |  |  |

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