Consolidated Balance Sheets (Parenthetical) $ in Thousands	Dec. 31, 2008 USD ($)
kaleo [Member]
Cost Method Investments, Original Cost	$ 7,500

Original amount of cost-method investments at the acquisition date.

No definition available.

Name:	us-gaap_CostMethodInvestmentsOriginalCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant