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| 0001193125-13-048241-index.html | 2013-02-11 14:16:13 | |
| 0001193125-13-048241.txt | 2013-02-11 14:16:13 | |
 0001193125-13-048241-xbrl.zip | 53175 | 2013-02-11 14:16:13 |
| ck0001097519-20130129.xml | 173815 | 2013-02-11 14:16:13 |
| ck0001097519-20130129.xsd | 50077 | 2013-02-11 14:16:13 |
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| ck0001097519-20130129_lab.xml | 195829 | 2013-02-11 14:16:13 |
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| d481726d497.htm | 830 | 2013-02-11 14:16:13 |
| FilingSummary.xml | 9000 | 2013-02-11 14:16:13 |
| Financial_Report.xls | 467654 | 2013-02-11 14:16:13 |
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| R10.htm | 40117 | 2013-02-11 14:16:13 |
| R11.htm | 34090 | 2013-02-11 14:16:13 |
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| R15.htm | 33160 | 2013-02-11 14:16:13 |
| R16.htm | 93256 | 2013-02-11 14:16:13 |
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| R31.htm | 81297 | 2013-02-11 14:16:13 |
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| R46.htm | 31889 | 2013-02-11 14:16:13 |
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| R9.htm | 40534 | 2013-02-11 14:16:13 |
| report.css | 2720 | 2013-02-11 14:16:13 |
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