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| 0001144204-11-060524.txt | 2011-11-01 14:50:19 | |
 0001144204-11-060524-xbrl.zip | 35694 | 2011-11-01 14:50:19 |
| FilingSummary.xml | 5395 | 2011-11-01 14:50:19 |
| Financial_Report.xls | 149867 | 2011-11-01 14:50:19 |
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| hdsn-20110930.xsd | 7866 | 2011-11-01 14:50:19 |
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| R2.htm | 87892 | 2011-11-01 14:50:19 |
| R3.htm | 30469 | 2011-11-01 14:50:19 |
| R4.htm | 59087 | 2011-11-01 14:50:19 |
| R5.htm | 94902 | 2011-11-01 14:50:19 |
| R6.htm | 63685 | 2011-11-01 14:50:19 |
| R7.htm | 55921 | 2011-11-01 14:50:19 |
| R8.htm | 6392 | 2011-11-01 14:50:19 |
| report.css | 2721 | 2011-11-01 14:50:19 |
| Show.js | 6423 | 2011-11-01 14:50:19 |
| v238494_10q.htm | 461533 | 2011-11-01 14:50:19 |
| v238494_ex31-1.htm | 14745 | 2011-11-01 14:50:19 |
| v238494_ex31-2.htm | 14411 | 2011-11-01 14:50:19 |
| v238494_ex32-1.htm | 6898 | 2011-11-01 14:50:19 |
| v238494_ex32-2.htm | 6612 | 2011-11-01 14:50:19 |