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CONCENTRATIONS (Details Textual) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Entity Wide Receivable Major Customer Percentage Description | No customer represented more than 10% of amounts receivable |
Net Revenue, Percentage | 68.00% | 27.00%
Suppliers One [Member] |  |
Entity Wide Payable, Major Suppliers, Percentage | 34.00% | 50.00%
Suppliers Two [Member] |  |
Entity Wide Payable, Major Suppliers, Percentage | 33.00% | 8.00%
Suppliers Three [Member] |  |
Entity Wide Payable, Major Suppliers, Percentage | 19.00% | 6.00%
Customer 1 [Member] |  |
Entity Wide Revenue, Major Customer, Percentage | 13.00% | 13.00%
Entity Wide Receivable, Major Customer, Percentage |  | 12.00%
Customer 2 [Member] |  |
Entity Wide Receivable, Major Customer, Percentage |  | 10.00%

X
- Definition Percentage of payables to suppliers. + References No definition available. + Details
Name: | dhrm_EntityWidePayableMajorSuppliersPercentage
Namespace Prefix: | dhrm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of receivables generated from a external customer. + References No definition available. + Details
Name: | dhrm_EntityWideReceivableMajorCustomerPercentage
Namespace Prefix: | dhrm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Description of percentage of receivables generated from a external customer. + References No definition available. + Details
Name: | dhrm_EntityWideReceivableMajorCustomerPercentageDescription
Namespace Prefix: | dhrm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of net revenue generated from three top selling product of the company. + References No definition available. + Details
Name: | dhrm_NetRevenuePercentage
Namespace Prefix: | dhrm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues. + References No definition available. + Details
Name: | us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration