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 0001193125-19-086286-index-headers.html | 2019-03-26 12:17:10 | |
| 0001193125-19-086286-index.html | 2019-03-26 12:17:10 | |
| 0001193125-19-086286.txt | 2019-03-26 12:17:10 | |
 0001193125-19-086286-xbrl.zip | 91113 | 2019-03-26 12:17:10 |
| ck0001097396-20181231.xml | 543132 | 2019-03-26 12:17:10 |
| ck0001097396-20181231.xsd | 36687 | 2019-03-26 12:17:10 |
| ck0001097396-20181231_cal.xml | 46727 | 2019-03-26 12:17:10 |
| ck0001097396-20181231_def.xml | 161733 | 2019-03-26 12:17:10 |
| ck0001097396-20181231_lab.xml | 246310 | 2019-03-26 12:17:10 |
| ck0001097396-20181231_pre.xml | 206828 | 2019-03-26 12:17:10 |
| d684199d10k.htm | 749095 | 2019-03-26 12:17:10 |
| d684199dex3101.htm | 10804 | 2019-03-26 12:17:10 |
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| d684199dex991.htm | 239372 | 2019-03-26 12:17:10 |
| d684199dex992.htm | 89393 | 2019-03-26 12:17:10 |
| FilingSummary.xml | 24414 | 2019-03-26 12:17:10 |
| Financial_Report.xlsx | 45449 | 2019-03-26 12:17:10 |
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| report.css | 2767 | 2019-03-26 12:17:10 |
| Show.js | 1085 | 2019-03-26 12:17:10 |