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Series A Notes, Net Of Current Maturities (Narrative) (Details) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2010 USD ($) | Jun. 30, 2010 ILS | Dec. 31, 2011 USD ($) | Dec. 31, 2010 USD ($)
Series A Notes, Net Of Current Maturities [Abstract] |  |  |  |
Notes issued |  | 1,100,000,000 |  |
Proceeds from issuance of Series A Notes | 283,000,000 |  |  | 283,213,000
Description of maturity period | payable in 10 equal annual installments on June 30 of each of the years 2011 through 2020. | payable in 10 equal annual installments on June 30 of each of the years 2011 through 2020. |  |
Fixed interest rate of Series A Notes |  |  |  | 4.84%
Maturity date of first interest payment | December 30, 2010 | December 30, 2010 |  |
Maturity date of last interest payment | June 30, 2020 | June 30, 2020 |  |
Interest expense on Series A Notes |  |  | 5,640,000 |
Series A Notes issuance costs |  |  |  | 2,530,000
Series A Notes issuance costs, discount |  |  | 2,164,000 |
Amortization of deferred issuance costs |  |  | 366,000 |
Amortization of Series A Notes discount and related issuance costs |  |  | $ 422,000 | $ (258,000)
Variable rate basis of fair value hedge transactions |  |  | Under the cross currency interest rate swaps, the Company will receive fixed NIS at a rate of 4.84% on NIS 1.1 billion and pay floating six-month USD LIBOR + an average spread of 1.65% on $287,000, which reflects the U.S. dollar value of the Series A Notes on the specific dates the transactions were entered. | The purpose of these transactions was to convert the NIS fixed rate Series A Notes into USD LIBOR (6 months) floating rate obligations. As a result of these agreements, the Company is currently paying an effective interest rate of six-month LIBOR (0.45% at December 31, 2011) plus an average of 1.65% on the principal amount, as compared to the original 4.84% fixed rate.

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