Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0001193125-12-234513-index.html | 2012-05-15 16:07:51 | |
| 0001193125-12-234513.txt | 2012-05-15 16:07:51 | |
 0001193125-12-234513-xbrl.zip | 85724 | 2012-05-15 16:07:51 |
| btc-20120331.xml | 1474339 | 2012-05-15 16:07:51 |
| btc-20120331.xsd | 16183 | 2012-05-15 16:07:51 |
| btc-20120331_cal.xml | 57039 | 2012-05-15 16:07:51 |
| btc-20120331_def.xml | 10708 | 2012-05-15 16:07:51 |
| btc-20120331_lab.xml | 189521 | 2012-05-15 16:07:51 |
| btc-20120331_pre.xml | 117667 | 2012-05-15 16:07:51 |
| d336644d10q.htm | 1439415 | 2012-05-15 16:07:51 |
| d336644dex311.htm | 7978 | 2012-05-15 16:07:51 |
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| d336644dex321.htm | 4108 | 2012-05-15 16:07:51 |
| FilingSummary.xml | 10684 | 2012-05-15 16:07:51 |
| Financial_Report.xls | 1182949 | 2012-05-15 16:07:51 |
| R1.htm | 26066 | 2012-05-15 16:07:51 |
| R10.htm | 583446 | 2012-05-15 16:07:51 |
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| R15.htm | 26027 | 2012-05-15 16:07:51 |
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| R2.htm | 163404 | 2012-05-15 16:07:51 |
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| R8.htm | 15589 | 2012-05-15 16:07:51 |
| R9.htm | 139336 | 2012-05-15 16:07:51 |
| report.css | 2721 | 2012-05-15 16:07:51 |
| Show.js | 6423 | 2012-05-15 16:07:51 |