CONDENSED STATEMENTS OF CHANGES IN MEMBERS' & SHAREHOLDERS' EQUITY (Parenthetical) (USD $)	0 Months Ended	12 Months Ended
Jul. 23, 2010	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CONDENSED STATEMENTS OF CHANGES IN MEMBERS' & SHAREHOLDERS' EQUITY
Private Placement Offerings price per unit	$ 50	$ 50	$ 50	$ 50	$ 50	$ 50

Represents the offering price per unit of units privately placed.

No definition available.

Name:	dprx_PrivatePlacementOfferingsUnitsIssuedPricePerUnit
Namespace Prefix:	dprx_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration