Fair Value Measurements (Fair Value Inputs, Liabilities, Quantitative Information) (Details) (USD $) In Thousands, unless otherwise specified		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012 Income Approach Valuation Technique [Member] Contingent Consideration [Member]	Jun. 30, 2012 Income Approach Valuation Technique [Member] Minimum [Member] Contingent Consideration [Member]	Jun. 30, 2012 Income Approach Valuation Technique [Member] Maximum [Member] Contingent Consideration [Member]	Jun. 30, 2012 Estimate of Fair Value, Fair Value Disclosure [Member] Fair Value, Measurements, Recurring [Member]	Dec. 31, 2011 Estimate of Fair Value, Fair Value Disclosure [Member] Fair Value, Measurements, Recurring [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Liabilities - Contingent consideration liability	$ 6,738				$ 6,738	$ 1,290
Discount rate			10.00%	14.50%
Probability of milestone payment		90.00%