Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001104659-20-033130-index-headers.html | 2020-03-13 16:16:32 | |
| 0001104659-20-033130-index.html | 2020-03-13 16:16:32 | |
| 0001104659-20-033130.txt | 2020-03-13 16:16:32 | |
 0001104659-20-033130-xbrl.zip | 164973 | 2020-03-13 16:16:32 |
| FilingSummary.xml | 38248 | 2020-03-13 16:16:32 |
| Financial_Report.xlsx | 90518 | 2020-03-13 16:16:32 |
| hdsn-20191231.xml | 1803553 | 2020-03-13 16:16:32 |
| hdsn-20191231.xsd | 62040 | 2020-03-13 16:16:32 |
| hdsn-20191231_cal.xml | 71721 | 2020-03-13 16:16:32 |
| hdsn-20191231_def.xml | 182935 | 2020-03-13 16:16:32 |
| hdsn-20191231_lab.xml | 465882 | 2020-03-13 16:16:32 |
| hdsn-20191231_pre.xml | 378695 | 2020-03-13 16:16:32 |
| R1.htm | 36947 | 2020-03-13 16:16:32 |
| R10.htm | 22383 | 2020-03-13 16:16:32 |
| R11.htm | 73652 | 2020-03-13 16:16:32 |
| R12.htm | 54805 | 2020-03-13 16:16:32 |
| R13.htm | 101937 | 2020-03-13 16:16:32 |
| R14.htm | 92844 | 2020-03-13 16:16:32 |
| R15.htm | 108553 | 2020-03-13 16:16:32 |
| R16.htm | 49824 | 2020-03-13 16:16:32 |
| R17.htm | 128060 | 2020-03-13 16:16:32 |
| R18.htm | 5344 | 2020-03-13 16:16:32 |
| R19.htm | 5686 | 2020-03-13 16:16:32 |
| R2.htm | 73082 | 2020-03-13 16:16:32 |
| R20.htm | 120960 | 2020-03-13 16:16:32 |
| R21.htm | 45371 | 2020-03-13 16:16:32 |
| R22.htm | 31324 | 2020-03-13 16:16:32 |
| R23.htm | 23475 | 2020-03-13 16:16:32 |
| R24.htm | 73134 | 2020-03-13 16:16:32 |
| R25.htm | 56853 | 2020-03-13 16:16:32 |
| R26.htm | 101920 | 2020-03-13 16:16:32 |
| R27.htm | 90124 | 2020-03-13 16:16:32 |
| R28.htm | 81339 | 2020-03-13 16:16:32 |
| R29.htm | 48837 | 2020-03-13 16:16:32 |
| R3.htm | 22133 | 2020-03-13 16:16:32 |
| R30.htm | 127897 | 2020-03-13 16:16:32 |
| R31.htm | 9444 | 2020-03-13 16:16:32 |
| R32.htm | 11063 | 2020-03-13 16:16:32 |
| R33.htm | 64484 | 2020-03-13 16:16:32 |
| R34.htm | 9477 | 2020-03-13 16:16:32 |
| R35.htm | 4967 | 2020-03-13 16:16:32 |
| R36.htm | 9004 | 2020-03-13 16:16:32 |
| R37.htm | 60889 | 2020-03-13 16:16:32 |
| R38.htm | 9084 | 2020-03-13 16:16:32 |
| R39.htm | 19557 | 2020-03-13 16:16:32 |
| R4.htm | 49332 | 2020-03-13 16:16:32 |
| R40.htm | 16120 | 2020-03-13 16:16:32 |
| R41.htm | 19380 | 2020-03-13 16:16:32 |
| R42.htm | 8130 | 2020-03-13 16:16:32 |
| R43.htm | 22238 | 2020-03-13 16:16:32 |
| R44.htm | 21301 | 2020-03-13 16:16:32 |
| R45.htm | 23114 | 2020-03-13 16:16:32 |
| R46.htm | 30641 | 2020-03-13 16:16:32 |
| R47.htm | 31918 | 2020-03-13 16:16:32 |
| R48.htm | 33118 | 2020-03-13 16:16:32 |
| R49.htm | 24999 | 2020-03-13 16:16:32 |
| R5.htm | 27829 | 2020-03-13 16:16:32 |
| R50.htm | 11883 | 2020-03-13 16:16:32 |
| R51.htm | 11848 | 2020-03-13 16:16:32 |
| R52.htm | 220111 | 2020-03-13 16:16:32 |
| R53.htm | 38062 | 2020-03-13 16:16:32 |
| R54.htm | 4307 | 2020-03-13 16:16:32 |
| R55.htm | 20790 | 2020-03-13 16:16:32 |
| R56.htm | 25246 | 2020-03-13 16:16:32 |
| R57.htm | 29959 | 2020-03-13 16:16:32 |
| R58.htm | 6577 | 2020-03-13 16:16:32 |
| R59.htm | 35802 | 2020-03-13 16:16:32 |
| R6.htm | 75334 | 2020-03-13 16:16:32 |
| R60.htm | 4122 | 2020-03-13 16:16:32 |
| R61.htm | 12267 | 2020-03-13 16:16:32 |
| R7.htm | 83238 | 2020-03-13 16:16:32 |
| R8.htm | 7636 | 2020-03-13 16:16:32 |
| R9.htm | 31612 | 2020-03-13 16:16:32 |
| report.css | 2767 | 2020-03-13 16:16:32 |
| Show.js | 1085 | 2020-03-13 16:16:32 |
| tm205284-1_10k.htm | 733470 | 2020-03-13 16:16:32 |
| tm205284d1_ex21.htm | 4361 | 2020-03-13 16:16:32 |
| tm205284d1_ex23-1.htm | 2880 | 2020-03-13 16:16:32 |
| tm205284d1_ex31-1.htm | 8732 | 2020-03-13 16:16:32 |
| tm205284d1_ex31-2.htm | 8601 | 2020-03-13 16:16:32 |
| tm205284d1_ex32-1.htm | 4065 | 2020-03-13 16:16:32 |
| tm205284d1_ex32-2.htm | 3918 | 2020-03-13 16:16:32 |
| tm205284d1_ex4-1.htm | 6617 | 2020-03-13 16:16:32 |