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SUBSEQUENT EVENTS (Details Textual)
12 Months Ended 0 Months Ended 1 Months Ended 0 Months Ended 12 Months Ended
Dec. 31, 2014
USD ($)
Dec. 31, 2014
CNY
Dec. 31, 2013
USD ($)
Dec. 31, 2012
Dec. 13, 2013
USD ($)
Dec. 13, 2013
CNY
Mar. 07, 2014
Nanjing Bank Company Limited [Member]
USD ($)
Mar. 07, 2014
Nanjing Bank Company Limited [Member]
CNY
Jan. 20, 2014
Nanjing Bank Company Limited [Member]
USD ($)
Jan. 20, 2014
Nanjing Bank Company Limited [Member]
CNY
Jan. 28, 2014
Nanjing Bank Company Limited [Member]
USD ($)
Jan. 28, 2014
Nanjing Bank Company Limited [Member]
CNY
Jan. 28, 2015
Nanjing Bank Company Limited [Member]
Subsequent Event [Member]
USD ($)
Jan. 28, 2015
Nanjing Bank Company Limited [Member]
Subsequent Event [Member]
CNY
Jan. 29, 2015
Nanjing Bank Company Limited [Member]
Subsequent Event [Member]
USD ($)
Jan. 29, 2015
Nanjing Bank Company Limited [Member]
Subsequent Event [Member]
CNY
Dec. 31, 2014
Nanjing Bank Company Limited [Member]
Subsequent Event [Member]
USD ($)
Dec. 31, 2014
Nanjing Bank Company Limited [Member]
Subsequent Event [Member]
CNY
Subsequent Event [Line Items]                                    
Line Of Credit, Current $ 2,440,500us-gaap_LinesOfCreditCurrent 15,000,000us-gaap_LinesOfCreditCurrent $ 2,477,715us-gaap_LinesOfCreditCurrent   $ 2,477,715us-gaap_LinesOfCreditCurrent 15,000,000us-gaap_LinesOfCreditCurrent $ 812,000us-gaap_LinesOfCreditCurrent
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
5,000,000us-gaap_LinesOfCreditCurrent
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
    $ 1,624,000us-gaap_LinesOfCreditCurrent
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
10,000,000us-gaap_LinesOfCreditCurrent
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
        $ 2,434,500us-gaap_LinesOfCreditCurrent
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
15,000,000us-gaap_LinesOfCreditCurrent
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Line Of Credit Facility, Interest Rate During Period 7.50%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod 7.50%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod 6.30%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod 6.60%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod     7.50%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
7.50%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
    7.50%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
7.50%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
        7.811%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
7.811%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Line Of Credit Facility, Expiration Date             Mar. 07, 2015 Mar. 07, 2015     Jan. 28, 2015 Jan. 28, 2015         Mar. 03, 2016 Mar. 03, 2016
Repayments of Short-term Debt, Total                 $ 825,905us-gaap_RepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
5,000,000us-gaap_RepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
    $ 1,625,000us-gaap_RepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
10,000,000us-gaap_RepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
$ 812,500us-gaap_RepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
5,000,000us-gaap_RepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember