Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-11-336740-index-headers.html | 2011-12-09 16:49:41 | |
| 0001193125-11-336740-index.html | 2011-12-09 16:49:41 | |
| 0001193125-11-336740.txt | 2011-12-09 16:49:41 | |
 0001193125-11-336740-xbrl.zip | 54158 | 2011-12-09 16:49:41 |
| d256654d10k.htm | 771017 | 2011-12-09 16:49:41 |
| d256654dex231.htm | 2182 | 2011-12-09 16:49:41 |
| d256654dex311.htm | 9397 | 2011-12-09 16:49:41 |
| d256654dex312.htm | 9335 | 2011-12-09 16:49:41 |
| d256654dex321.htm | 3682 | 2011-12-09 16:49:41 |
| d256654dex322.htm | 3736 | 2011-12-09 16:49:41 |
| dwsn-20110930.xml | 415797 | 2011-12-09 16:49:41 |
| dwsn-20110930.xsd | 14659 | 2011-12-09 16:49:41 |
| dwsn-20110930_cal.xml | 37923 | 2011-12-09 16:49:41 |
| dwsn-20110930_def.xml | 18643 | 2011-12-09 16:49:41 |
| dwsn-20110930_lab.xml | 163793 | 2011-12-09 16:49:41 |
| dwsn-20110930_pre.xml | 100899 | 2011-12-09 16:49:41 |
| FilingSummary.xml | 11253 | 2011-12-09 16:49:41 |
| Financial_Report.xls | 364925 | 2011-12-09 16:49:41 |
 g256654g10w24.jpg | 40981 | 2011-12-09 16:49:41 |
| R1.htm | 37271 | 2011-12-09 16:49:41 |
| R10.htm | 22513 | 2011-12-09 16:49:41 |
| R11.htm | 25371 | 2011-12-09 16:49:41 |
| R12.htm | 15087 | 2011-12-09 16:49:41 |
| R13.htm | 54891 | 2011-12-09 16:49:41 |
| R14.htm | 12925 | 2011-12-09 16:49:41 |
| R15.htm | 5399 | 2011-12-09 16:49:41 |
| R16.htm | 62788 | 2011-12-09 16:49:41 |
| R17.htm | 27751 | 2011-12-09 16:49:41 |
| R18.htm | 15586 | 2011-12-09 16:49:41 |
| R19.htm | 16912 | 2011-12-09 16:49:41 |
| R2.htm | 122492 | 2011-12-09 16:49:41 |
| R20.htm | 11580 | 2011-12-09 16:49:41 |
| R21.htm | 8287 | 2011-12-09 16:49:41 |
| R22.htm | 8104 | 2011-12-09 16:49:41 |
| R23.htm | 29207 | 2011-12-09 16:49:41 |
| R24.htm | 22837 | 2011-12-09 16:49:41 |
| R3.htm | 31613 | 2011-12-09 16:49:41 |
| R4.htm | 83313 | 2011-12-09 16:49:41 |
| R5.htm | 113275 | 2011-12-09 16:49:41 |
| R6.htm | 150291 | 2011-12-09 16:49:41 |
| R7.htm | 21671 | 2011-12-09 16:49:41 |
| R8.htm | 17074 | 2011-12-09 16:49:41 |
| R9.htm | 27563 | 2011-12-09 16:49:41 |
| report.css | 2721 | 2011-12-09 16:49:41 |
| Show.js | 6423 | 2011-12-09 16:49:41 |