Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000352825-21-000024-index-headers.html | 2021-05-28 10:40:32 | |
| 0000352825-21-000024-index.html | 2021-05-28 10:40:32 | |
| 0000352825-21-000024.txt | 2021-05-28 10:40:32 | |
 0000352825-21-000024-xbrl.zip | 11921 | 2021-05-28 10:40:32 |
| FilingSummary.xml | 1600 | 2021-05-28 10:40:32 |
| Financial_Report.xlsx | 5659 | 2021-05-28 10:40:32 |
| fstr-20210528.htm | 61125 | 2021-05-28 10:40:32 |
| fstr-20210528.xsd | 1914 | 2021-05-28 10:40:32 |
| fstr-20210528_htm.xml | 14957 | 2021-05-28 10:40:32 |
| fstr-20210528_lab.xml | 23970 | 2021-05-28 10:40:32 |
| fstr-20210528_pre.xml | 12646 | 2021-05-28 10:40:32 |
| MetaLinks.json | 17044 | 2021-05-28 10:40:32 |
| R1.htm | 38603 | 2021-05-28 10:40:32 |
| report.css | 2766 | 2021-05-28 10:40:32 |
| Show.js | 1084 | 2021-05-28 10:40:32 |