Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Quoted prices In active markets for identical assets (Level 1) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of financial assets measured on recurring basis	$ 2,539	$ 1,746
Fair value of financial liabilities measured on recurring basis		0
Significant other observable inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of financial assets measured on recurring basis	85	0
Fair value of financial liabilities measured on recurring basis	191	602
Significant unobservable inputs (Level 3) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of financial assets measured on recurring basis		0
Fair value of financial liabilities measured on recurring basis	3,964	8,924
Total [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of financial assets measured on recurring basis	2,624	1,746
Fair value of financial liabilities measured on recurring basis	4,155	9,526
Equity securities [Member] | Quoted prices In active markets for identical assets (Level 1) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of financial assets measured on recurring basis	2,539	1,746
Equity securities [Member] | Significant other observable inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of financial assets measured on recurring basis		0
Equity securities [Member] | Significant unobservable inputs (Level 3) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of financial assets measured on recurring basis		0
Equity securities [Member] | Total [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of financial assets measured on recurring basis	2,539	1,746
Derivative instruments [Member] | Quoted prices In active markets for identical assets (Level 1) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of financial assets measured on recurring basis	0
Fair value of financial liabilities measured on recurring basis		0
Derivative instruments [Member] | Significant other observable inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of financial assets measured on recurring basis	85
Fair value of financial liabilities measured on recurring basis	191	602
Derivative instruments [Member] | Significant unobservable inputs (Level 3) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of financial assets measured on recurring basis	0
Fair value of financial liabilities measured on recurring basis		0
Derivative instruments [Member] | Total [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of financial assets measured on recurring basis	85
Fair value of financial liabilities measured on recurring basis	191	602
Acquisition-related contingent consideration - short-term [Member] | Quoted prices In active markets for identical assets (Level 1) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related contingent consideration - short-term		0
Acquisition-related contingent consideration - short-term [Member] | Significant other observable inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related contingent consideration - short-term		0
Acquisition-related contingent consideration - short-term [Member] | Significant unobservable inputs (Level 3) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related contingent consideration - short-term	1,194	6,195
Acquisition-related contingent consideration - short-term [Member] | Total [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related contingent consideration - short-term	1,194	6,195
Acquisition-related contingent consideration - long-term [Member] | Quoted prices In active markets for identical assets (Level 1) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related contingent consideration - long-term		0
Acquisition-related contingent consideration - long-term [Member] | Significant other observable inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related contingent consideration - long-term		0
Acquisition-related contingent consideration - long-term [Member] | Significant unobservable inputs (Level 3) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related contingent consideration - long-term	2,770	2,729
Acquisition-related contingent consideration - long-term [Member] | Total [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related contingent consideration - long-term	$ 2,770	$ 2,729