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SHORT-TERM BORROWINGS (Details Textual)
12 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Dec. 31, 2014
CNY
Dec. 13, 2013
USD ($)
Dec. 13, 2013
CNY
Dec. 31, 2014
Floating Interest Rate [Member]
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 ($)
Jan. 28, 2014
Nanjing Bank Company Limited [Member]
CNY
Jan. 20, 2014
Commercial Bank of China Limited [Member]
USD ($)
Jan. 20, 2014
Commercial Bank of China Limited [Member]
CNY
Dec. 31, 2014
Commercial Bank of China Limited [Member]
USD ($)
Dec. 31, 2014
Commercial Bank of China Limited [Member]
CNY
Line of Credit Facility [Line Items]                                  
Long-term Line of Credit                               $ 2,440,500us-gaap_LineOfCredit
/ dei_LegalEntityAxis
= dhrm_CommercialBankOfChinaLimitedMember
15,000,000us-gaap_LineOfCredit
/ dei_LegalEntityAxis
= dhrm_CommercialBankOfChinaLimitedMember
Line of Credit Facility, Interest Rate During Period 7.50%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod 6.30%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod 6.60%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod       7.50%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
/ us-gaap_VariableRateAxis
= dhrm_FloatingInterestRateMember
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
       
Short-term borrowings 2,440,500us-gaap_LinesOfCreditCurrent 2,477,715us-gaap_LinesOfCreditCurrent   15,000,000us-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
       
Line of Credit Facility, Expiration Date               Mar. 07, 2015 Mar. 07, 2015     Jan. 28, 2015 Jan. 28, 2015        
Interest Expense, Short-term Borrowings 176,231us-gaap_InterestExpenseShortTermBorrowings 159,483us-gaap_InterestExpenseShortTermBorrowings 149,488us-gaap_InterestExpenseShortTermBorrowings                            
Repayments of Short-term Debt, Total                   $ 825,905us-gaap_RepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
5,000,000us-gaap_RepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= dhrm_NanjingBankCompanyLimitedMember
    $ 1,651,970us-gaap_RepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= dhrm_CommercialBankOfChinaLimitedMember
10,000,000us-gaap_RepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= dhrm_CommercialBankOfChinaLimitedMember