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WARRANTS (Details 2) (Fair Value, Inputs, Level 2 [Member], USD $) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012
Fair Value, Inputs, Level 2 [Member] |  |
Beginning balance | $ 374,166 | $ 96,469
Warrants issued |  | 97,505
Fair value change of the issued warrants included in earnings | 4,413 | 180,192
Ending balance | $ 378,579 | $ 374,166

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- Definition It represents the fair value of issued warrants. + References No definition available. + Details
Name: | dhrm_FairValueOfIssuedWarrants
Namespace Prefix: | dhrm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Fair Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. + References No definition available. + Details
Name: | dhrm_WarrantsAndRightsOutstandingFairValue
Namespace Prefix: | dhrm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Fair value of warrants issued. + References No definition available. + Details
Name: | dhrm_WarrantsIssuedAtFairValue
Namespace Prefix: | dhrm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration