Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000768835-20-000134-index-headers.html | 2020-09-01 16:04:10 | |
| 0000768835-20-000134-index.html | 2020-09-01 16:04:10 | |
| 0000768835-20-000134.txt | 2020-09-01 16:04:10 | |
 0000768835-20-000134-xbrl.zip | 64522 | 2020-09-01 16:04:10 |
| big-20200827.htm | 69163 | 2020-09-01 16:04:10 |
| big-20200827.xsd | 2669 | 2020-09-01 16:04:10 |
| big-20200827_cal.xml | 731 | 2020-09-01 16:04:10 |
| big-20200827_def.xml | 14473 | 2020-09-01 16:04:10 |
| big-20200827_htm.xml | 10428 | 2020-09-01 16:04:10 |
| big-20200827_lab.xml | 28256 | 2020-09-01 16:04:10 |
| big-20200827_pre.xml | 14996 | 2020-09-01 16:04:10 |
| exhibit991-earningsrel.htm | 475095 | 2020-09-01 16:04:10 |
| exhibit992-eventtransc.htm | 161217 | 2020-09-01 16:04:10 |
| exhibit993-shareholder.htm | 22379 | 2020-09-01 16:04:10 |
| FilingSummary.xml | 1826 | 2020-09-01 16:04:10 |
| Financial_Report.xlsx | 5433 | 2020-09-01 16:04:10 |
 logoq2191.jpg | 2935 | 2020-09-01 16:04:10 |
 logoq21911.jpg | 2935 | 2020-09-01 16:04:10 |
| MetaLinks.json | 19978 | 2020-09-01 16:04:10 |
| R1.htm | 38823 | 2020-09-01 16:04:10 |
| report.css | 2767 | 2020-09-01 16:04:10 |
| Show.js | 1085 | 2020-09-01 16:04:10 |