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|---|---|---|
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| 0000768835-23-000104-index.html | 2023-09-06 16:16:32 | |
| 0000768835-23-000104.txt | 2023-09-06 16:16:32 | |
 0000768835-23-000104-xbrl.zip | 269415 | 2023-09-06 16:16:32 |
| big-20230729.htm | 873158 | 2023-09-06 16:16:32 |
| big-20230729.xsd | 42815 | 2023-09-06 16:16:32 |
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| big-2023729xex312.htm | 11425 | 2023-09-06 16:16:32 |
| big-2023729xex321.htm | 5154 | 2023-09-06 16:16:32 |
| big-2023729xex322.htm | 5671 | 2023-09-06 16:16:32 |
| ex1010-thirdpsaamendment.htm | 83523 | 2023-09-06 16:16:32 |
| ex107-purchaseandsaleagree.htm | 677725 | 2023-09-06 16:16:32 |
| ex108-firstpsaamendment.htm | 67713 | 2023-09-06 16:16:32 |
| ex109-secondpsaamendment.htm | 134304 | 2023-09-06 16:16:32 |
| FilingSummary.xml | 22667 | 2023-09-06 16:16:32 |
| Financial_Report.xlsx | 65990 | 2023-09-06 16:16:32 |
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| R1.htm | 51615 | 2023-09-06 16:16:32 |
| R10.htm | 24107 | 2023-09-06 16:16:32 |
| R11.htm | 11771 | 2023-09-06 16:16:32 |
| R12.htm | 24630 | 2023-09-06 16:16:32 |
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| R17.htm | 6259 | 2023-09-06 16:16:32 |
| R18.htm | 8617 | 2023-09-06 16:16:32 |
| R19.htm | 23777 | 2023-09-06 16:16:32 |
| R2.htm | 76686 | 2023-09-06 16:16:32 |
| R20.htm | 24225 | 2023-09-06 16:16:32 |
| R21.htm | 13567 | 2023-09-06 16:16:32 |
| R22.htm | 65620 | 2023-09-06 16:16:32 |
| R23.htm | 26098 | 2023-09-06 16:16:32 |
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| R25.htm | 25667 | 2023-09-06 16:16:32 |
| R26.htm | 32770 | 2023-09-06 16:16:32 |
| R27.htm | 35539 | 2023-09-06 16:16:32 |
| R28.htm | 8344 | 2023-09-06 16:16:32 |
| R29.htm | 12554 | 2023-09-06 16:16:32 |
| R3.htm | 96587 | 2023-09-06 16:16:32 |
| R30.htm | 21104 | 2023-09-06 16:16:32 |
| R31.htm | 8679 | 2023-09-06 16:16:32 |
| R32.htm | 95376 | 2023-09-06 16:16:32 |
| R33.htm | 8317 | 2023-09-06 16:16:32 |
| R34.htm | 8851 | 2023-09-06 16:16:32 |
| R35.htm | 23640 | 2023-09-06 16:16:32 |
| R36.htm | 5863 | 2023-09-06 16:16:32 |
| R37.htm | 8932 | 2023-09-06 16:16:32 |
| R4.htm | 20844 | 2023-09-06 16:16:32 |
| R5.htm | 83150 | 2023-09-06 16:16:32 |
| R6.htm | 4753 | 2023-09-06 16:16:32 |
| R7.htm | 85178 | 2023-09-06 16:16:32 |
| R8.htm | 20790 | 2023-09-06 16:16:32 |
| R9.htm | 33302 | 2023-09-06 16:16:32 |
| report.css | 2767 | 2023-09-06 16:16:32 |
| Show.js | 1085 | 2023-09-06 16:16:32 |