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|---|---|---|
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| 0000768835-22-000131-index.html | 2022-12-07 17:26:03 | |
| 0000768835-22-000131.txt | 2022-12-07 17:26:03 | |
 0000768835-22-000131-xbrl.zip | 632113 | 2022-12-07 17:26:03 |
| big-20221029.htm | 1124178 | 2022-12-07 17:26:03 |
| big-20221029.xsd | 36035 | 2022-12-07 17:26:03 |
| big-20221029xex1072022cred.htm | 2037063 | 2022-12-07 17:26:03 |
| big-20221029xex1082022avdc.htm | 1536009 | 2022-12-07 17:26:03 |
| big-20221029xex311.htm | 11018 | 2022-12-07 17:26:03 |
| big-20221029xex312.htm | 11527 | 2022-12-07 17:26:03 |
| big-20221029xex321.htm | 5251 | 2022-12-07 17:26:03 |
| big-20221029xex322.htm | 5768 | 2022-12-07 17:26:03 |
| big-20221029_cal.xml | 44633 | 2022-12-07 17:26:03 |
| big-20221029_def.xml | 247520 | 2022-12-07 17:26:03 |
| big-20221029_htm.xml | 711324 | 2022-12-07 17:26:03 |
| big-20221029_lab.xml | 517468 | 2022-12-07 17:26:03 |
| big-20221029_pre.xml | 316292 | 2022-12-07 17:26:03 |
| FilingSummary.xml | 18148 | 2022-12-07 17:26:03 |
| Financial_Report.xlsx | 52614 | 2022-12-07 17:26:03 |
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| R11.htm | 24167 | 2022-12-07 17:26:03 |
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| R19.htm | 25710 | 2022-12-07 17:26:03 |
| R2.htm | 77295 | 2022-12-07 17:26:03 |
| R20.htm | 24989 | 2022-12-07 17:26:03 |
| R21.htm | 22370 | 2022-12-07 17:26:03 |
| R22.htm | 34396 | 2022-12-07 17:26:03 |
| R23.htm | 7514 | 2022-12-07 17:26:03 |
| R24.htm | 14198 | 2022-12-07 17:26:03 |
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| R26.htm | 83639 | 2022-12-07 17:26:03 |
| R27.htm | 10410 | 2022-12-07 17:26:03 |
| R28.htm | 23830 | 2022-12-07 17:26:03 |
| R3.htm | 95874 | 2022-12-07 17:26:03 |
| R4.htm | 19666 | 2022-12-07 17:26:03 |
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| R6.htm | 4776 | 2022-12-07 17:26:03 |
| R7.htm | 89053 | 2022-12-07 17:26:03 |
| R8.htm | 18314 | 2022-12-07 17:26:03 |
| R9.htm | 28452 | 2022-12-07 17:26:03 |
| report.css | 2767 | 2022-12-07 17:26:03 |
| Show.js | 1085 | 2022-12-07 17:26:03 |