Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000352825-21-000008-index-headers.html | 2021-02-16 16:02:47 | |
| 0000352825-21-000008-index.html | 2021-02-16 16:02:47 | |
| 0000352825-21-000008.txt | 2021-02-16 16:02:47 | |
 0000352825-21-000008-xbrl.zip | 22225 | 2021-02-16 16:02:47 |
| ex-99121621.htm | 75696 | 2021-02-16 16:02:47 |
| FilingSummary.xml | 1710 | 2021-02-16 16:02:47 |
| Financial_Report.xlsx | 5464 | 2021-02-16 16:02:47 |
| fstr-20210216.htm | 106538 | 2021-02-16 16:02:47 |
| fstr-20210216.xsd | 2423 | 2021-02-16 16:02:47 |
| fstr-20210216_cal.xml | 710 | 2021-02-16 16:02:47 |
| fstr-20210216_def.xml | 1643 | 2021-02-16 16:02:47 |
| fstr-20210216_htm.xml | 15282 | 2021-02-16 16:02:47 |
| fstr-20210216_lab.xml | 23970 | 2021-02-16 16:02:47 |
| fstr-20210216_pre.xml | 12646 | 2021-02-16 16:02:47 |
 image_01a.jpg | 149547 | 2021-02-16 16:02:47 |
| MetaLinks.json | 17213 | 2021-02-16 16:02:47 |
| R1.htm | 39640 | 2021-02-16 16:02:47 |
| report.css | 2767 | 2021-02-16 16:02:47 |
| Show.js | 1085 | 2021-02-16 16:02:47 |