Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

Name:	us-gaap_FairValueInputsDiscountRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Fair Value Measurements (Fair Value Inputs, Liabilities, Quantitative Information) (Details) (Contingent Consideration [Member], USD $) In Thousands, unless otherwise specified				3 Months Ended				3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Revenue-based Payments [Member]	Mar. 31, 2013 Revenue-based Payments [Member] Fair Value, Inputs, Level 3 [Member] Income Approach Valuation Technique [Member]	Mar. 31, 2013 Revenue-based Payments [Member] Fair Value, Inputs, Level 3 [Member] Income Approach Valuation Technique [Member] Minimum [Member]	Mar. 31, 2013 Revenue-based Payments [Member] Fair Value, Inputs, Level 3 [Member] Income Approach Valuation Technique [Member] Maximum [Member]	Mar. 31, 2013 Other Payments [Member]	Mar. 31, 2013 Other Payments [Member] Fair Value, Inputs, Level 3 [Member] Income Approach Valuation Technique [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Liabilities - Contingent consideration liability	$ 6,694	$ 6,697	$ 6,362				$ 332
Discount rate					10.00%	14.50%		4.50%
Probability of milestone payment				90.00%				100.00%