Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000768835-21-000003-index-headers.html | 2021-01-13 07:30:23 | |
| 0000768835-21-000003-index.html | 2021-01-13 07:30:23 | |
| 0000768835-21-000003.txt | 2021-01-13 07:30:23 | |
 0000768835-21-000003-xbrl.zip | 18757 | 2021-01-13 07:30:23 |
| big-20210113.htm | 35189 | 2021-01-13 07:30:23 |
| big-20210113.xsd | 2669 | 2021-01-13 07:30:23 |
| big-20210113_cal.xml | 731 | 2021-01-13 07:30:23 |
| big-20210113_def.xml | 14473 | 2021-01-13 07:30:23 |
| big-20210113_htm.xml | 10494 | 2021-01-13 07:30:23 |
| big-20210113_lab.xml | 28256 | 2021-01-13 07:30:23 |
| big-20210113_pre.xml | 14996 | 2021-01-13 07:30:23 |
| exhibit991-q4businessupdate.htm | 22411 | 2021-01-13 07:30:23 |
| FilingSummary.xml | 1743 | 2021-01-13 07:30:23 |
| Financial_Report.xlsx | 5431 | 2021-01-13 07:30:23 |
 logoq2191.jpg | 2935 | 2021-01-13 07:30:23 |
| MetaLinks.json | 19978 | 2021-01-13 07:30:23 |
| R1.htm | 38823 | 2021-01-13 07:30:23 |
| report.css | 2767 | 2021-01-13 07:30:23 |
| Show.js | 1085 | 2021-01-13 07:30:23 |