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| 0001144204-12-025289-index.html | 2012-05-01 16:15:36 | |
| 0001144204-12-025289.txt | 2012-05-01 16:15:36 | |
 0001144204-12-025289-xbrl.zip | 37450 | 2012-05-01 16:15:36 |
| FilingSummary.xml | 5737 | 2012-05-01 16:15:36 |
| Financial_Report.xls | 94698 | 2012-05-01 16:15:36 |
| hdsn-20120331.xml | 109744 | 2012-05-01 16:15:36 |
| hdsn-20120331.xsd | 8325 | 2012-05-01 16:15:36 |
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| R2.htm | 105488 | 2012-05-01 16:15:36 |
| R3.htm | 36502 | 2012-05-01 16:15:36 |
| R4.htm | 68593 | 2012-05-01 16:15:36 |
| R5.htm | 104583 | 2012-05-01 16:15:36 |
| R6.htm | 37934 | 2012-05-01 16:15:36 |
| R7.htm | 28832 | 2012-05-01 16:15:36 |
| R8.htm | 7579 | 2012-05-01 16:15:36 |
| R9.htm | 4316 | 2012-05-01 16:15:36 |
| report.css | 2721 | 2012-05-01 16:15:36 |
| Show.js | 6423 | 2012-05-01 16:15:36 |
| v310907_10q.htm | 208875 | 2012-05-01 16:15:36 |
| v310907_ex31-1.htm | 7546 | 2012-05-01 16:15:36 |
| v310907_ex31-2.htm | 8029 | 2012-05-01 16:15:36 |
| v310907_ex32-1.htm | 4267 | 2012-05-01 16:15:36 |
| v310907_ex32-2.htm | 4184 | 2012-05-01 16:15:36 |