Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000352825-21-000044-index-headers.html | 2021-07-23 15:02:46 | |
| 0000352825-21-000044-index.html | 2021-07-23 15:02:46 | |
| 0000352825-21-000044.txt | 2021-07-23 15:02:46 | |
 0000352825-21-000044-xbrl.zip | 35263 | 2021-07-23 15:02:46 |
| ex-1017232021.htm | 100283 | 2021-07-23 15:02:46 |
| ex-1027232021.htm | 30339 | 2021-07-23 15:02:46 |
| FilingSummary.xml | 1666 | 2021-07-23 15:02:46 |
| Financial_Report.xlsx | 5664 | 2021-07-23 15:02:46 |
| fstr-20210723.htm | 50252 | 2021-07-23 15:02:46 |
| fstr-20210723.xsd | 1902 | 2021-07-23 15:02:46 |
| fstr-20210723_htm.xml | 14952 | 2021-07-23 15:02:46 |
| fstr-20210723_lab.xml | 23832 | 2021-07-23 15:02:46 |
| fstr-20210723_pre.xml | 12508 | 2021-07-23 15:02:46 |
 image_0.jpg | 28698 | 2021-07-23 15:02:46 |
| MetaLinks.json | 16637 | 2021-07-23 15:02:46 |
| R1.htm | 38567 | 2021-07-23 15:02:46 |
| report.css | 2767 | 2021-07-23 15:02:46 |
| Show.js | 1085 | 2021-07-23 15:02:46 |