WARRANTS (Details 2) (USD $)	6 Months Ended	12 Months Ended
Jun. 30, 2012	Dec. 31, 2011
Ending balance	$ 286,041
Fair Value, Inputs, Level 2 [Member]
Beginning balance	96,469	318,109
Warrants issued	97,505	0
Fair value change of the issued warrants included in earnings	92,067	(221,640)
Ending balance	$ 286,041	$ 96,469

Fair Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

No definition available.

Name:	dhrm_WarrantsAndRightsOutstandingFairValue
Namespace Prefix:	dhrm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant