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Commitments And Contingent Liabilities (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2011 | Apr. 30, 2011 | Dec. 31, 2009 | May 31, 2009 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Royalties expenses |  |  |  |  | $ 2,524 | $ 3,012 | $ 5,317
Outstanding buy-back obligations | 691,000 |  |  |  | 691,000 |  |
Filed claims | 35,000 | 100,000 | 10,000 |  |  |  |
Settlement amount receivable | 32,000 |  |  |  | 32,000 |  |
Recovery seeking from complaint |  |  |  | 16,000 |  |  |
Holding percentage of share capital issued |  |  |  |  | 46.00% |  |
Ownership percentage fully diluted basis |  |  |  |  | 7.00% |  |
Lease expenses |  |  |  |  | 12,977 | 15,233 | 28,812
Guarantees issued by banks to secure certain advances from customers and performance bonds |  |  |  |  | 1,039,500 |  |
Amount guaranteed in respect of credit lines granted by banks |  |  |  |  | 5,700 | 7,000 |
Purchase commitments |  |  |  |  | 1,026,000 | 1,046,000 |
Secure bank and bank guarantees amount | 1,039,500 |  |  |  | 1,039,500 |  |
Total amount of project |  |  |  |  | 23,000 |  |
Customer advances and performance guarantees | $ 5,000 |  |  |  | $ 5,000 |  |
Elop [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Holding percentage of share capital issued |  |  |  |  | 14.00% |  |
Maximum [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Percentage of total sales of products developed within framework of research and development activity program |  |  |  |  | 5.00% |  |
Maximum amount of royalties paid, percentage |  |  |  |  | 150.00% |  |
Minimum [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Percentage of total sales of products developed within framework of research and development activity program |  |  |  |  | 2.00% |  |
Maximum amount of royalties paid, percentage |  |  |  |  | 100.00% |  |

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