Fair Value Measurement (Financial Assets And Liabilities Carried At Fair Value Measured On A Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Jan. 10, 2011	Dec. 31, 2010
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Cash and cash equivalents	$ 40,005
Bonds - foreign government	880
Investments in marketable securities	4,189		4,108
Derivative assets	204		880
Derivative liabilities	633		25,200
Contingent consideration liabilities	9,676	40,300
Quoted Prices In Active Markets (Level 1) [Member]
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Cash and cash equivalents	40,005
Bonds - foreign government	880
Investments in marketable securities	4,189		4,108
Derivative assets
Derivative liabilities
Significant Other Observable Inputs (Level 2) [Member]
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Investments in marketable securities
Derivative assets	204		880
Derivative liabilities	633		25,200
Significant Unobservable Inputs (Level 3) [Member]
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Investments in marketable securities
Derivative assets
Derivative liabilities
Contingent consideration liabilities	$ 9,676