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Consolidated Statements Of Cash Flows (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income $ 89,780 $ 195,041 $ 228,513
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 150,618 132,141 123,473
Write-off impairment and discontinued operations, net 15,977 1,284 3,017
Stock-based compensation 1,996 5,211 5,134
Amortization of Series A Notes discount and related issuance costs 422 (258)  
Deferred income taxes and reserve, net (8,777) (28,162) 7,606
Gain on sale of property, plant and equipment (1,645) (1,426) (723)
Loss (gain) on sale of investment 2,189 (19,151) (2,734)
Equity in net earnings of affiliated companies and partnership, net of dividend received(*) (270) (8,791) (1,824)
Changes in operating assets and liabilities, net of amounts acquired:      
Increase in short and long-term trade receivables, and prepaid expenses (65,062) (84,708) (136,224)
Decrease (increase) in inventories, net (95,363) (49,724) 75,431
Increase in trade payables, other payables and accrued expenses 17,225 76,807 20,223
Severance, pension and termination indemnities, net 1,879 4,160 (16,773)
Increase (decrease) in advances received from customers 81,946 (36,396) (95,397)
Net cash provided by operating activities 190,915 186,028 209,722
CASH FLOWS FROM INVESTING ACTIVITIES      
Purchase of property, plant and equipment (121,977) (138,644) (107,893)
Acquisitions of subsidiaries and business operations (Schedule A) (12,173) (229,556) (48,234)
Investments in affiliated companies and other companies (13,555) (4,956) (19,415)
Proceeds from sale of property, plant and equipment 15,059 10,667 9,055
Proceeds from sale of investments 329 27,941 33,026
Investment in long-term deposits (609) (14,484) (24,004)
Proceeds from sale of long-term deposits 40,396 30,240 12,994
Investment in short-term deposits and available for sale securities (88,842) (189,345) (152,457)
Proceeds from sale of short-term deposits and available for sale securities 126,306 252,550 99,625
Net cash used in investing activities (55,066) (255,587) (197,303)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from exercise of options 3,833 3,590 9,871
Purchase of non-controlling interests (71,000)   (110,250)
Repayment of long-term bank loans (73,666) (488,657) (148,652)
Proceeds from long-term bank loans 172,303 387,692 256,354
Proceeds from issuance of Series A Notes   283,213  
Series A Notes issuance costs   (2,530)  
Purchase of treasury shares (10,101)    
Repayment of Series A Notes and convertible debentures (29,998)    
Purchase of convertible debentures of a subsidiary (2,121)    
Dividends paid (61,633) (63,137) (76,172)
Tax benefit in respect of options exercised 169 710  
Change in short-term bank credit and loans, net (12,117) (40,972) (7,531)
Net cash provided by (used in) financing activities (84,331) 79,909 (76,380)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 51,518 10,350 (63,961)
CASH AND CASH EQUIVALENTS AT THE BEGINNING OF THE YEAR 151,059 140,709 204,670
CASH AND CASH EQUIVALENTS AT THE END OF THE YEAR 202,577 151,059 140,709
(*) Dividend received from affiliated companies and partnerships 15,107 10,925 17,468
SUPPLEMENTAL CASH FLOW ACTIVITIES:      
Income taxes 18,955 60,759 47,946
Interest $ 10,258 $ 13,524 $ 11,665