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EQUITY (Details) (USD $) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012
Balance - beginning of year | $ 75,489 | $ 74,469
Addition to statutory reserves | 0 | 1,020
Balance - end of year | $ 75,489 | $ 75,489

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