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Series A Notes, Net Of Current Maturities (Narrative) (Details)
In Thousands, unless otherwise specified
 1 Months Ended 12 Months Ended 2 Months Ended 12 Months Ended
May 31, 2012
USD ($)
May 31, 2012
ILS
Mar. 31, 2012
USD ($)
Mar. 31, 2012
ILS
Jun. 30, 2010
USD ($)
installment
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
Dec. 31, 2013
ILS
Dec. 31, 2012
ILS
Jun. 30, 2010
ILS
May 31, 2012
4.84% First Amount
ILS
May 31, 2012
4.84% Second Amount
ILS
May 31, 2012
Average spread 2.02%
USD ($)
May 31, 2012
Average spread 2.285%
USD ($)
Dec. 31, 2013
LIBOR 0.45%
May 31, 2012
Cross Currency Interest Rate Swaps
London Interbank Offered Rate (LIBOR)
Dec. 31, 2013
Cross Currency Interest Rate Swaps
London Interbank Offered Rate (LIBOR)
May 31, 2012
Cross Currency Interest Rate Swaps
London Interbank Offered Rate (LIBOR)
Average spread 2.02%
May 31, 2012
Cross Currency Interest Rate Swaps
London Interbank Offered Rate (LIBOR)
Average spread 2.285%
Derivative [Line Items]                                        
Proceeds from issuance of Series A Notes $ 24,900 95,000 $ 224,000 831,000 $ 283,000 $ 0 $ 246,973 $ 0                        
Number of equal annual installments associated with note, in installments         10                              
Fixed interest rate of Series A Notes 4.84% 4.84%     4.84% 4.84% 4.84%                          
Series A Notes issuance costs 94   2,010   2,530 0 2,035 0                        
Series A Notes issuance costs, discount     1,795   2,164                              
Amortization of deferred issuance costs     215   366 92 153 422                        
Amount of Series A Note 24,407 92,000 217,420 807,000   423,509 450,040       1,100,000                  
Premium amount 260   3,675                                  
Interest expense on Series A Notes           9,715 10,787 5,753                        
Cross currency interest rate swap transaction term, in years           10 years                            
Cross currency interest rate swap, amount           $ 287,000     1,100,000 1,100,000   807,000 92,000 $ 217,300 $ 24,100          
Average spread on LIBOR                               1.84%   1.65% 2.02% 2.285%
LIBOR measurement term, in months           6 months                            
Variable rate basis of fair value hedge transactions                                 LIBOR LIBOR    
Effective interest rate           0.45%                       0.45%    
Fixed interest rate                       4.84%