Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000352825-22-000004-index-headers.html | 2022-03-01 08:31:49 | |
| 0000352825-22-000004-index.html | 2022-03-01 08:31:49 | |
| 0000352825-22-000004.txt | 2022-03-01 08:31:49 | |
 0000352825-22-000004-xbrl.zip | 30279 | 2022-03-01 08:31:49 |
| ex-991q42021.htm | 323076 | 2022-03-01 08:31:49 |
| FilingSummary.xml | 1642 | 2022-03-01 08:31:49 |
| Financial_Report.xlsx | 5660 | 2022-03-01 08:31:49 |
| fstr-20220301.htm | 42300 | 2022-03-01 08:31:49 |
| fstr-20220301.xsd | 1902 | 2022-03-01 08:31:49 |
| fstr-20220301_htm.xml | 14889 | 2022-03-01 08:31:49 |
| fstr-20220301_lab.xml | 23832 | 2022-03-01 08:31:49 |
| fstr-20220301_pre.xml | 12508 | 2022-03-01 08:31:49 |
 image.jpg | 26481 | 2022-03-01 08:31:49 |
| MetaLinks.json | 16473 | 2022-03-01 08:31:49 |
| R1.htm | 38569 | 2022-03-01 08:31:49 |
| report.css | 2767 | 2022-03-01 08:31:49 |
| Show.js | 1085 | 2022-03-01 08:31:49 |