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EQUITY (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Option Indexed to Issuers Equity [Line Items] |  |  |
• Balance - beginning of year | $ 76,260 | $ 76,260 | $ 75,489
• Addition to statutory reserves | 0 | 0 | 771
• Balance - end of year | $ 76,260 | $ 76,260 | $ 76,260

X
- Definition Additions made to statutory surplus reserve of the company during the period. + References No definition available. + Details
Name: | dhrm_StatutoryReserveAddition
Namespace Prefix: | dhrm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of statutory surplus reserve of the company during the period. + References No definition available. + Details
Name: | dhrm_StatutorySurplusReserve
Namespace Prefix: | dhrm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_OptionIndexedToIssuersEquityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration