Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-13-221988-index-headers.html | 2013-05-15 14:28:34 | |
| 0001193125-13-221988-index.html | 2013-05-15 14:28:34 | |
| 0001193125-13-221988.txt | 2013-05-15 14:28:34 | |
 0001193125-13-221988-xbrl.zip | 30523 | 2013-05-15 14:28:34 |
| d519468d10q.htm | 127650 | 2013-05-15 14:28:34 |
| d519468dex311.htm | 10324 | 2013-05-15 14:28:34 |
| d519468dex312.htm | 10672 | 2013-05-15 14:28:34 |
| d519468dex321.htm | 5717 | 2013-05-15 14:28:34 |
| dtipiv-20130331.xml | 45242 | 2013-05-15 14:28:34 |
| dtipiv-20130331.xsd | 16977 | 2013-05-15 14:28:34 |
| dtipiv-20130331_cal.xml | 23039 | 2013-05-15 14:28:34 |
| dtipiv-20130331_def.xml | 80389 | 2013-05-15 14:28:34 |
| dtipiv-20130331_lab.xml | 114264 | 2013-05-15 14:28:34 |
| dtipiv-20130331_pre.xml | 96001 | 2013-05-15 14:28:34 |
| FilingSummary.xml | 9958 | 2013-05-15 14:28:34 |
| Financial_Report.xls | 50607 | 2013-05-15 14:28:34 |
| R1.htm | 25533 | 2013-05-15 14:28:34 |
| R10.htm | 6373 | 2013-05-15 14:28:34 |
| R11.htm | 4037 | 2013-05-15 14:28:34 |
| R12.htm | 7300 | 2013-05-15 14:28:34 |
| R13.htm | 21629 | 2013-05-15 14:28:34 |
| R14.htm | 27174 | 2013-05-15 14:28:34 |
| R15.htm | 4972 | 2013-05-15 14:28:34 |
| R16.htm | 21776 | 2013-05-15 14:28:34 |
| R17.htm | 3141 | 2013-05-15 14:28:34 |
| R18.htm | 5482 | 2013-05-15 14:28:34 |
| R2.htm | 89095 | 2013-05-15 14:28:34 |
| R3.htm | 4936 | 2013-05-15 14:28:34 |
| R4.htm | 39426 | 2013-05-15 14:28:34 |
| R5.htm | 51331 | 2013-05-15 14:28:34 |
| R6.htm | 10671 | 2013-05-15 14:28:34 |
| R7.htm | 6475 | 2013-05-15 14:28:34 |
| R8.htm | 7998 | 2013-05-15 14:28:34 |
| R9.htm | 7202 | 2013-05-15 14:28:34 |
| report.css | 2721 | 2013-05-15 14:28:34 |
| Show.js | 6423 | 2013-05-15 14:28:34 |