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|---|---|---|
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| 0000768835-18-000064-index.html | 2018-06-13 16:04:08 | |
| 0000768835-18-000064.txt | 2018-06-13 16:04:08 | |
 0000768835-18-000064-xbrl.zip | 138851 | 2018-06-13 16:04:08 |
| big-20180505.xml | 579451 | 2018-06-13 16:04:08 |
| big-20180505.xsd | 29688 | 2018-06-13 16:04:08 |
| big-20180505_cal.xml | 56674 | 2018-06-13 16:04:08 |
| big-20180505_def.xml | 274242 | 2018-06-13 16:04:08 |
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| big-201855xex311.htm | 14954 | 2018-06-13 16:04:08 |
| big-201855xex312.htm | 15057 | 2018-06-13 16:04:08 |
| big-201855xex321.htm | 7604 | 2018-06-13 16:04:08 |
| big-201855xex322.htm | 7663 | 2018-06-13 16:04:08 |
| exhibit101-ceoseparationag.htm | 74550 | 2018-06-13 16:04:08 |
| FilingSummary.xml | 22642 | 2018-06-13 16:04:08 |
| Financial_Report.xlsx | 46716 | 2018-06-13 16:04:08 |
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| R10.htm | 8601 | 2018-06-13 16:04:08 |
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| R9.htm | 8263 | 2018-06-13 16:04:08 |
| report.css | 2767 | 2018-06-13 16:04:08 |
| Show.js | 1410 | 2018-06-13 16:04:08 |