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v2.4.1.9

Summary of Significant Accounting Policies - Additional Information (Details 1) | 12 Months Ended
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Dec. 31, 2014 lb | Dec. 31, 2013 lb
Significant Accounting Policies [Line Items] |  |
Production Or Importation Of Hcfc | 51,000,000 hdsn_ProductionOrImportationOfHcfc | 63,000,000 hdsn_ProductionOrImportationOfHcfc

X
- Definition This represents the production or importation of Hcfc. + References No definition available. + Details
Name: | hdsn_ProductionOrImportationOfHcfc
Namespace Prefix: | hdsn_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | hdsn_SignificantAccountingPoliciesLineItems
Namespace Prefix: | hdsn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration