Derivative Instruments And Hedging Activities (Summary Of Notional Amounts Of Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Derivative [Line Items]
Total forward contracts notional amount	$ 124,177	$ 162,984
Euro Member Countries, Euro
Derivative [Line Items]
Total forward contracts notional amount	60,559	84,770
Japan, Yen
Derivative [Line Items]
Total forward contracts notional amount	31,639	42,209
Hungary, Forint
Derivative [Line Items]
Total forward contracts notional amount	$ 31,979	$ 36,005

Aggregate notional amount of all derivatives designated as cash flow hedging instruments. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

Name:	us-gaap_NotionalAmountOfCashFlowHedgeInstruments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant