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EQUITY (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Option Indexed to Issuers Equity [Line Items]
Balance - beginning of year	$ 75,489	$ 74,469	$ 72,226
Addition to statutory reserves	771	1,020	2,243
Balance - end of year	$ 76,260	$ 75,489	$ 74,469

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

X

- Details

Name:	us-gaap_OptionIndexedToIssuersEquityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration