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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual)	6 Months Ended
	Jun. 30, 2013
Equity Method Investment, Ownership Percentage	50.00%
Value Added Tax Payable, Percentage	17.00%
Income Tax Recognizes Tax Benefit Percentage	50.00%

X

- Definition

Income tax recognizes tax Benefit percentage during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	dhrm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the value added tax percentage.

+ References

No definition available.

+ Details

Name:	dhrm_ValueAddedTaxPayablePercentage
Namespace Prefix:	dhrm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant