Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000352825-21-000018-index-headers.html | 2021-05-03 16:35:27 | |
| 0000352825-21-000018-index.html | 2021-05-03 16:35:27 | |
| 0000352825-21-000018.txt | 2021-05-03 16:35:27 | |
 0000352825-21-000018-xbrl.zip | 26758 | 2021-05-03 16:35:27 |
| ex-991q12021.htm | 198072 | 2021-05-03 16:35:27 |
| FilingSummary.xml | 1711 | 2021-05-03 16:35:27 |
| Financial_Report.xlsx | 5685 | 2021-05-03 16:35:27 |
| fstr-20210503.htm | 43337 | 2021-05-03 16:35:27 |
| fstr-20210503.xsd | 2423 | 2021-05-03 16:35:27 |
| fstr-20210503_cal.xml | 710 | 2021-05-03 16:35:27 |
| fstr-20210503_def.xml | 1643 | 2021-05-03 16:35:27 |
| fstr-20210503_htm.xml | 15708 | 2021-05-03 16:35:27 |
| fstr-20210503_lab.xml | 23970 | 2021-05-03 16:35:27 |
| fstr-20210503_pre.xml | 12646 | 2021-05-03 16:35:27 |
 lbflogo1.jpg | 587126 | 2021-05-03 16:35:27 |
| MetaLinks.json | 17213 | 2021-05-03 16:35:27 |
| R1.htm | 39639 | 2021-05-03 16:35:27 |
| report.css | 2767 | 2021-05-03 16:35:27 |
| Show.js | 1085 | 2021-05-03 16:35:27 |