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Taxes On Income (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Corporate tax rates | 25.00% | 24.00% | 25.00%
Period for certain income from approved enterprise program to be tax exempt, in years | 2 years |  |
Tax rate for certain income from approved enterprise program | 25.00% |  |
Period of reduced tax rate for certain income from approved enterprise program, in years | 8 years |  |
Commencement of production maximum period for tax exempt income, in years | 12 years |  |
Period after date of approval which income is not longer tax exempt, in years | 14 years |  |
Alternative tax rate | 25.00% |  |
Minimum percentage of income from exports | 25.00% |  |
Tax-exempt profits earned by the company's "Approved Enterprises" and "Privileged Enterprises | $ 694,342 |  |
Income tax liability | 173,585 |  |
Withholding tax rate | 15.00% |  |
Liability for unrecognized tax benefits | 52,599 | 53,183 | 48,791
Accrued interest and penalties | 8,449 | 5,916 |
Reduction in other income taxes liabilities |  | 4,684 | 1,508
Taxes on income |  | 0 | 800
Available carry forward tax losses | 163,812 |  |
Available carry forward tax losses non-Israeli subsidiaries | $ 43,526 |  |
Reduced tax rate, payable period, in days | 30 days |  |
Development Area A [Member] |  |  |
Tax rate in 2012 | 10.00% |  |
Tax rate in 2013 | 7.00% |  |
Tax rate in 2014 | 7.00% |  |
Tax rate in 2015 | 6.00% |  |
Other Regions [Member] |  |  |
Tax rate in 2012 | 15.00% |  |
Tax rate in 2013 | 12.50% |  |
Tax rate in 2014 | 12.50% |  |
Tax rate in 2015 | 12.00% |  |
Maximum [Member] |  |  |
Period of reduced tax rate for certain income from approved enterprise program, in years | 10 years |  |
Reduced tax rate, due to amendment law | 17.50% |  |
Minimum [Member] |  |  |
Period of reduced tax rate for certain income from approved enterprise program, in years | 5 years |  |
Reduced tax rate, due to amendment law | 6.00% |  |

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- Definition The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 47 -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 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817 + Details
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