Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0000768835-22-000114-index.html | 2022-09-07 16:48:20 | |
| 0000768835-22-000114.txt | 2022-09-07 16:48:20 | |
 0000768835-22-000114-xbrl.zip | 209507 | 2022-09-07 16:48:20 |
| big-20220730.htm | 1090546 | 2022-09-07 16:48:20 |
| big-20220730.xsd | 34401 | 2022-09-07 16:48:20 |
| big-20220730_cal.xml | 44633 | 2022-09-07 16:48:20 |
| big-20220730_def.xml | 243396 | 2022-09-07 16:48:20 |
| big-20220730_htm.xml | 613640 | 2022-09-07 16:48:20 |
| big-20220730_lab.xml | 502505 | 2022-09-07 16:48:20 |
| big-20220730_pre.xml | 309810 | 2022-09-07 16:48:20 |
| big-2022730xex311.htm | 11018 | 2022-09-07 16:48:20 |
| big-2022730xex312.htm | 11527 | 2022-09-07 16:48:20 |
| big-2022730xex321.htm | 5257 | 2022-09-07 16:48:20 |
| big-2022730xex322.htm | 5775 | 2022-09-07 16:48:20 |
| exhibit106-2020ltipxrestri.htm | 26561 | 2022-09-07 16:48:20 |
| FilingSummary.xml | 17549 | 2022-09-07 16:48:20 |
| Financial_Report.xlsx | 49502 | 2022-09-07 16:48:20 |
| MetaLinks.json | 500798 | 2022-09-07 16:48:20 |
| R1.htm | 51623 | 2022-09-07 16:48:20 |
| R10.htm | 17147 | 2022-09-07 16:48:20 |
| R11.htm | 22689 | 2022-09-07 16:48:20 |
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| R14.htm | 32114 | 2022-09-07 16:48:20 |
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| R2.htm | 77284 | 2022-09-07 16:48:20 |
| R20.htm | 24003 | 2022-09-07 16:48:20 |
| R21.htm | 31596 | 2022-09-07 16:48:20 |
| R22.htm | 7514 | 2022-09-07 16:48:20 |
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| R27.htm | 23828 | 2022-09-07 16:48:20 |
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| R4.htm | 19666 | 2022-09-07 16:48:20 |
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| R6.htm | 4776 | 2022-09-07 16:48:20 |
| R7.htm | 89013 | 2022-09-07 16:48:20 |
| R8.htm | 19313 | 2022-09-07 16:48:20 |
| R9.htm | 27609 | 2022-09-07 16:48:20 |
| report.css | 2767 | 2022-09-07 16:48:20 |
| Show.js | 1085 | 2022-09-07 16:48:20 |