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| 0001564590-20-023473-index.html | 2020-05-08 15:03:00 | |
| 0001564590-20-023473.txt | 2020-05-08 15:03:00 | |
 0001564590-20-023473-xbrl.zip | 213990 | 2020-05-08 15:03:00 |
| fbss-10q_20200331.htm | 3916576 | 2020-05-08 15:03:00 |
| fbss-20200331.xml | 5393563 | 2020-05-08 15:03:00 |
| fbss-20200331.xsd | 50917 | 2020-05-08 15:03:00 |
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| fbss-20200331_lab.xml | 517326 | 2020-05-08 15:03:00 |
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| fbss-ex322_8.htm | 4286 | 2020-05-08 15:03:00 |
| FilingSummary.xml | 37320 | 2020-05-08 15:03:00 |
| Financial_Report.xlsx | 85426 | 2020-05-08 15:03:00 |
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| report.css | 2767 | 2020-05-08 15:03:00 |
| Show.js | 1085 | 2020-05-08 15:03:00 |