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| 0000352825-22-000062.txt | 2022-11-08 08:32:16 | |
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| ex-991q32022.htm | 305581 | 2022-11-08 08:32:16 |
| FilingSummary.xml | 1641 | 2022-11-08 08:32:16 |
| Financial_Report.xlsx | 5683 | 2022-11-08 08:32:16 |
| fstr-20221108.htm | 41984 | 2022-11-08 08:32:16 |
| fstr-20221108.xsd | 1902 | 2022-11-08 08:32:16 |
| fstr-20221108_htm.xml | 14583 | 2022-11-08 08:32:16 |
| fstr-20221108_lab.xml | 23832 | 2022-11-08 08:32:16 |
| fstr-20221108_pre.xml | 12508 | 2022-11-08 08:32:16 |
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| R1.htm | 38094 | 2022-11-08 08:32:16 |
| report.css | 2767 | 2022-11-08 08:32:16 |
| Show.js | 1085 | 2022-11-08 08:32:16 |