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v2.4.1.9

EQUITY (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Option Indexed to Issuers Equity [Line Items] |  |  |
Balance - beginning of year | $ 76,260 dhrm_StatutorySurplusReserve | $ 75,489 dhrm_StatutorySurplusReserve | $ 74,469 dhrm_StatutorySurplusReserve
Addition to statutory reserves | (33,999)dhrm_StatutoryReserveAddition | 771 dhrm_StatutoryReserveAddition | 1,020 dhrm_StatutoryReserveAddition
Balance -end of year | $ 42,261 dhrm_StatutorySurplusReserve | $ 76,260 dhrm_StatutorySurplusReserve | $ 75,489 dhrm_StatutorySurplusReserve

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
- Details
Name: | us-gaap_OptionIndexedToIssuersEquityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration