Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001145549-25-028841-index-headers.html | 2025-05-05 13:06:10 | |
| 0001145549-25-028841-index.html | 2025-05-05 13:06:10 | |
| 0001145549-25-028841.txt | 2025-05-05 13:06:10 | |
 0001145549-25-028841-xbrl.zip | 1221108 | 2025-05-05 13:06:10 |
| 302_Certification.htm | 32230 | 2025-05-05 13:06:10 |
| 8dd832f592bb7c2.htm | 2087530 | 2025-05-05 13:06:10 |
| 8dd832f592bb7c2_htm.xml | 448319 | 2025-05-05 13:06:10 |
| 906_Certification.htm | 9767 | 2025-05-05 13:06:10 |
 chartimages_3584020.jpg | 135341 | 2025-05-05 13:06:10 |
 chartimages_3584023.jpg | 33969 | 2025-05-05 13:06:10 |
 chartimages_3584051.jpg | 137588 | 2025-05-05 13:06:10 |
 chartimages_3584052.jpg | 33969 | 2025-05-05 13:06:10 |
 chartimages_3584071.jpg | 138725 | 2025-05-05 13:06:10 |
 chartimages_3584072.jpg | 33969 | 2025-05-05 13:06:10 |
 chartimages_3584080.jpg | 33969 | 2025-05-05 13:06:10 |
 chartimages_3584091.jpg | 138240 | 2025-05-05 13:06:10 |
 chartimages_3584128.jpg | 33969 | 2025-05-05 13:06:10 |
 chartimages_3584139.jpg | 136391 | 2025-05-05 13:06:10 |
 chartimages_3584147.jpg | 138099 | 2025-05-05 13:06:10 |
 chartimages_3584148.jpg | 33969 | 2025-05-05 13:06:10 |
| cik0001097519-20250228.xsd | 9571 | 2025-05-05 13:06:10 |
| cik0001097519-20250228_def.xml | 14122 | 2025-05-05 13:06:10 |
| cik0001097519-20250228_lab.xml | 23094 | 2025-05-05 13:06:10 |
| cik0001097519-20250228_pre.xml | 23724 | 2025-05-05 13:06:10 |
| Code_of_Ethics.htm | 67682 | 2025-05-05 13:06:10 |
| FilingSummary.xml | 4718 | 2025-05-05 13:06:10 |
| Financial_Report.xlsx | 20060 | 2025-05-05 13:06:10 |
 g3fbsqpjm5jlh61joglaq.jpg | 49493 | 2025-05-05 13:06:10 |
 g427wzso1ivyeucndgte6.jpg | 49493 | 2025-05-05 13:06:10 |
 g8l8z63x2ubv9bgmfi3hl.jpg | 49493 | 2025-05-05 13:06:10 |
 giqzhdjhye6dij478s79u.jpg | 49493 | 2025-05-05 13:06:10 |
 go4zzjnpdfl9v22kfz526.jpg | 49493 | 2025-05-05 13:06:10 |
 gsglud73f2nej0ylcnmaa.jpg | 49493 | 2025-05-05 13:06:10 |
 gugfi7zn7guszs2liu8pw.jpg | 729 | 2025-05-05 13:06:10 |
 gvk0gd7vdf59jkrw93hc8.jpg | 49493 | 2025-05-05 13:06:10 |
 images_1902.jpg | 24911 | 2025-05-05 13:06:10 |
 images_1913.jpg | 109128 | 2025-05-05 13:06:10 |
 img822d10e21.jpg | 250062 | 2025-05-05 13:06:10 |
 imgbd7095412.jpg | 38453 | 2025-05-05 13:06:10 |
| MetaLinks.json | 92583 | 2025-05-05 13:06:10 |
| R1.htm | 12718 | 2025-05-05 13:06:10 |
| R2.htm | 337136 | 2025-05-05 13:06:10 |
| R3.htm | 35757 | 2025-05-05 13:06:10 |
| R4.htm | 31982 | 2025-05-05 13:06:10 |
| R5.htm | 98652 | 2025-05-05 13:06:10 |
| report.css | 2767 | 2025-05-05 13:06:10 |
| Show.js | 1085 | 2025-05-05 13:06:10 |