The Company and Description of Business (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Future Revenue [Line Items]
Percentage of target institutions of U.S. critical care centers	10.00%
Minimum [Member]
Future Revenue [Line Items]
Potential revenues in fourth year	10
Maximum [Member]
Future Revenue [Line Items]
Potential revenues in fourth year	20

Refers to Percentage of target institutions of U.S. critical care centers.

No definition available.

Name:	dsco_PercentageOfTargetInstitutionsOfUSCriticalCareCenters
Namespace Prefix:	dsco_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration