Segmented Information - Schedule of Information Relating to Segments (Detail) - USD ($)
$ in Thousands |
12 Months Ended |
Mar. 28, 2020 |
Mar. 30, 2019 |
Mar. 31, 2018 |
| Segment Reporting Information [Line Items] |
|
|
|
| Revenues |
$ 169,420
|
$ 151,049
|
$ 146,608
|
| Unadjusted gross profit |
68,284
|
60,055
|
57,755
|
| Intersegment Eliminations [Member] |
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
| Revenues |
3,606
|
9,912
|
13,054
|
| Retail Segment [Member] |
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
| Unadjusted gross profit |
64,210
|
58,936
|
55,578
|
| Retail Segment [Member] | Operating Segments [Member] |
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
| Revenues |
160,981
|
143,499
|
141,607
|
| Other Segments [Member] |
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
| Unadjusted gross profit |
4,074
|
1,119
|
2,177
|
| Other Segments [Member] | Intersegment Eliminations [Member] |
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
| Revenues |
3,606
|
9,912
|
13,054
|
| Other Segments [Member] | Operating Segments [Member] |
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
| Revenues |
$ 8,439
|
$ 7,550
|
$ 5,001
|