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| 0001193125-12-140744-index.html | 2012-03-29 21:11:06 | |
| 0001193125-12-140744.txt | 2012-03-29 21:11:06 | |
 0001193125-12-140744-xbrl.zip | 139014 | 2012-03-29 21:11:06 |
| btc-20111231.xml | 2256779 | 2012-03-29 21:11:06 |
| btc-20111231.xsd | 26849 | 2012-03-29 21:11:06 |
| btc-20111231_cal.xml | 61597 | 2012-03-29 21:11:06 |
| btc-20111231_def.xml | 15525 | 2012-03-29 21:11:06 |
| btc-20111231_lab.xml | 243109 | 2012-03-29 21:11:06 |
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| d294512dex992.htm | 15340 | 2012-03-29 21:11:06 |
| FilingSummary.xml | 17163 | 2012-03-29 21:11:06 |
| Financial_Report.xls | 1837186 | 2012-03-29 21:11:06 |
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| report.css | 2721 | 2012-03-29 21:11:06 |
| Show.js | 6423 | 2012-03-29 21:11:06 |