Related Party Balances And Transactions (Schedule Of Transaction With Related Parties) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Related Party Transaction [Line Items]
Cost of revenues	$ 4,974	$ 1,819	$ 6,853
Research And Development [Member]
Related Party Transaction [Line Items]
Expenses	1,032	1,010	951
Selling And Marketing [Member]
Related Party Transaction [Line Items]
Expenses	1,233	1,308	1,152
General And Administrative [Member]
Related Party Transaction [Line Items]
Expenses	684	704	514
Purchase Of Property And Equpment [Member]
Related Party Transaction [Line Items]
Expenses	$ 1,130	$ 275	$ 206

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 57

-Paragraph 2

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Name:	us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration