Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000352825-21-000003-index-headers.html | 2021-02-04 14:08:48 | |
| 0000352825-21-000003-index.html | 2021-02-04 14:08:48 | |
| 0000352825-21-000003.txt | 2021-02-04 14:08:48 | |
 0000352825-21-000003-xbrl.zip | 33633 | 2021-02-04 14:08:48 |
| ex-103242021.htm | 213100 | 2021-02-04 14:08:48 |
| FilingSummary.xml | 1711 | 2021-02-04 14:08:48 |
| Financial_Report.xlsx | 5440 | 2021-02-04 14:08:48 |
| fstr-20210204.htm | 51560 | 2021-02-04 14:08:48 |
| fstr-20210204.xsd | 2423 | 2021-02-04 14:08:48 |
| fstr-20210204_cal.xml | 710 | 2021-02-04 14:08:48 |
| fstr-20210204_def.xml | 1643 | 2021-02-04 14:08:48 |
| fstr-20210204_htm.xml | 14957 | 2021-02-04 14:08:48 |
| fstr-20210204_lab.xml | 23970 | 2021-02-04 14:08:48 |
| fstr-20210204_pre.xml | 12646 | 2021-02-04 14:08:48 |
| MetaLinks.json | 17213 | 2021-02-04 14:08:48 |
| R1.htm | 38606 | 2021-02-04 14:08:48 |
| report.css | 2767 | 2021-02-04 14:08:48 |
| Show.js | 1085 | 2021-02-04 14:08:48 |