Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001104659-20-123591-index-headers.html | 2020-11-10 16:16:00 | |
| 0001104659-20-123591-index.html | 2020-11-10 16:16:00 | |
| 0001104659-20-123591.txt | 2020-11-10 16:16:00 | |
 0001104659-20-123591-xbrl.zip | 123226 | 2020-11-10 16:16:00 |
| FilingSummary.xml | 26101 | 2020-11-10 16:16:00 |
| Financial_Report.xlsx | 78338 | 2020-11-10 16:16:00 |
| hdsn-20200930.xml | 1192217 | 2020-11-10 16:16:00 |
| hdsn-20200930.xsd | 41996 | 2020-11-10 16:16:00 |
| hdsn-20200930_cal.xml | 51181 | 2020-11-10 16:16:00 |
| hdsn-20200930_def.xml | 112231 | 2020-11-10 16:16:00 |
| hdsn-20200930_lab.xml | 347687 | 2020-11-10 16:16:00 |
| hdsn-20200930_pre.xml | 266702 | 2020-11-10 16:16:00 |
| R1.htm | 34197 | 2020-11-10 16:16:00 |
| R10.htm | 77501 | 2020-11-10 16:16:00 |
| R11.htm | 39435 | 2020-11-10 16:16:00 |
| R12.htm | 95189 | 2020-11-10 16:16:00 |
| R13.htm | 65083 | 2020-11-10 16:16:00 |
| R14.htm | 96250 | 2020-11-10 16:16:00 |
| R15.htm | 6011 | 2020-11-10 16:16:00 |
| R16.htm | 6703 | 2020-11-10 16:16:00 |
| R17.htm | 126044 | 2020-11-10 16:16:00 |
| R18.htm | 43353 | 2020-11-10 16:16:00 |
| R19.htm | 23752 | 2020-11-10 16:16:00 |
| R2.htm | 83381 | 2020-11-10 16:16:00 |
| R20.htm | 76557 | 2020-11-10 16:16:00 |
| R21.htm | 38302 | 2020-11-10 16:16:00 |
| R22.htm | 93415 | 2020-11-10 16:16:00 |
| R23.htm | 58713 | 2020-11-10 16:16:00 |
| R24.htm | 72570 | 2020-11-10 16:16:00 |
| R25.htm | 16173 | 2020-11-10 16:16:00 |
| R26.htm | 75230 | 2020-11-10 16:16:00 |
| R27.htm | 8742 | 2020-11-10 16:16:00 |
| R28.htm | 60878 | 2020-11-10 16:16:00 |
| R29.htm | 4771 | 2020-11-10 16:16:00 |
| R3.htm | 22434 | 2020-11-10 16:16:00 |
| R30.htm | 17983 | 2020-11-10 16:16:00 |
| R31.htm | 16135 | 2020-11-10 16:16:00 |
| R32.htm | 8139 | 2020-11-10 16:16:00 |
| R33.htm | 29032 | 2020-11-10 16:16:00 |
| R34.htm | 10973 | 2020-11-10 16:16:00 |
| R35.htm | 23852 | 2020-11-10 16:16:00 |
| R36.htm | 13605 | 2020-11-10 16:16:00 |
| R37.htm | 41133 | 2020-11-10 16:16:00 |
| R38.htm | 27890 | 2020-11-10 16:16:00 |
| R39.htm | 13773 | 2020-11-10 16:16:00 |
| R4.htm | 67915 | 2020-11-10 16:16:00 |
| R40.htm | 135958 | 2020-11-10 16:16:00 |
| R41.htm | 8925 | 2020-11-10 16:16:00 |
| R42.htm | 11960 | 2020-11-10 16:16:00 |
| R5.htm | 42744 | 2020-11-10 16:16:00 |
| R6.htm | 83974 | 2020-11-10 16:16:00 |
| R7.htm | 82897 | 2020-11-10 16:16:00 |
| R8.htm | 7631 | 2020-11-10 16:16:00 |
| R9.htm | 22603 | 2020-11-10 16:16:00 |
| report.css | 2767 | 2020-11-10 16:16:00 |
| Show.js | 1085 | 2020-11-10 16:16:00 |
| tm2029526-1_10q.htm | 439698 | 2020-11-10 16:16:00 |
| tm2029526d1_ex31-1.htm | 10766 | 2020-11-10 16:16:00 |
| tm2029526d1_ex31-2.htm | 10669 | 2020-11-10 16:16:00 |
| tm2029526d1_ex32-1.htm | 4485 | 2020-11-10 16:16:00 |
| tm2029526d1_ex32-2.htm | 4169 | 2020-11-10 16:16:00 |