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| 0001437749-24-014067.txt | 2024-05-01 07:55:19 | |
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| ex_623149.htm | 629805 | 2024-05-01 07:55:19 |
| FilingSummary.xml | 1765 | 2024-05-01 07:55:19 |
| Financial_Report.xlsx | 5798 | 2024-05-01 07:55:19 |
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| R1.htm | 42242 | 2024-05-01 07:55:19 |
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| spre20240206_8k.htm | 32649 | 2024-05-01 07:55:19 |
| spre20240206_8k_htm.xml | 4547 | 2024-05-01 07:55:19 |
| sr-20240501.xsd | 3805 | 2024-05-01 07:55:19 |
| sr-20240501_def.xml | 13322 | 2024-05-01 07:55:19 |
| sr-20240501_lab.xml | 17448 | 2024-05-01 07:55:19 |
| sr-20240501_pre.xml | 13299 | 2024-05-01 07:55:19 |