Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (Recurring [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred compensation	$ 5,989	$ 4,540
Derivative instruments		223
Assets	5,989	4,763
Contingent consideration	8,482	11,519
Deferred compensation	9,110	7,015
Deriviative instruments	31
Liabilities	17,623	18,534
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred compensation	5,989	4,540
Assets	5,989	4,540
Deferred compensation	9,110	7,015
Liabilities	9,110	7,015
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative instruments		223
Assets		223
Deriviative instruments	31
Liabilities	31
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent consideration	8,482	11,519
Liabilities	$ 8,482	$ 11,519