Parent Directory| Name | Size | Last Modified |
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| 0001193125-12-223368-index.html | 2012-05-10 06:03:36 | |
| 0001193125-12-223368.txt | 2012-05-10 06:03:36 | |
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| d334429d10q.htm | 305718 | 2012-05-10 06:03:36 |
| d334429dex311.htm | 9424 | 2012-05-10 06:03:36 |
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| d334429dex321.htm | 3666 | 2012-05-10 06:03:36 |
| d334429dex322.htm | 3736 | 2012-05-10 06:03:36 |
| dwsn-20120331.xml | 125916 | 2012-05-10 06:03:36 |
| dwsn-20120331.xsd | 6908 | 2012-05-10 06:03:36 |
| dwsn-20120331_cal.xml | 28587 | 2012-05-10 06:03:36 |
| dwsn-20120331_lab.xml | 102510 | 2012-05-10 06:03:36 |
| dwsn-20120331_pre.xml | 61688 | 2012-05-10 06:03:36 |
| FilingSummary.xml | 6445 | 2012-05-10 06:03:36 |
| Financial_Report.xls | 119415 | 2012-05-10 06:03:36 |
| R1.htm | 26717 | 2012-05-10 06:03:36 |
| R10.htm | 16915 | 2012-05-10 06:03:36 |
| R11.htm | 6258 | 2012-05-10 06:03:36 |
| R12.htm | 38435 | 2012-05-10 06:03:36 |
| R2.htm | 108660 | 2012-05-10 06:03:36 |
| R3.htm | 29848 | 2012-05-10 06:03:36 |
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| R7.htm | 18799 | 2012-05-10 06:03:36 |
| R8.htm | 13982 | 2012-05-10 06:03:36 |
| R9.htm | 24310 | 2012-05-10 06:03:36 |
| report.css | 2721 | 2012-05-10 06:03:36 |
| Show.js | 6423 | 2012-05-10 06:03:36 |