Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000352825-22-000020-index-headers.html | 2022-06-03 15:00:17 | |
| 0000352825-22-000020-index.html | 2022-06-03 15:00:17 | |
| 0000352825-22-000020.txt | 2022-06-03 15:00:17 | |
 0000352825-22-000020-xbrl.zip | 12029 | 2022-06-03 15:00:17 |
| FilingSummary.xml | 1605 | 2022-06-03 15:00:17 |
| Financial_Report.xlsx | 5661 | 2022-06-03 15:00:17 |
| fstr-20220603.htm | 67723 | 2022-06-03 15:00:17 |
| fstr-20220603.xsd | 1902 | 2022-06-03 15:00:17 |
| fstr-20220603_htm.xml | 14596 | 2022-06-03 15:00:17 |
| fstr-20220603_lab.xml | 23832 | 2022-06-03 15:00:17 |
| fstr-20220603_pre.xml | 12508 | 2022-06-03 15:00:17 |
| MetaLinks.json | 16472 | 2022-06-03 15:00:17 |
| R1.htm | 38699 | 2022-06-03 15:00:17 |
| report.css | 2766 | 2022-06-03 15:00:17 |
| Show.js | 1084 | 2022-06-03 15:00:17 |