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Consolidated Statements Of Cash Flows - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income $ 240,622 $ 238,808 $ 206,861
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 114,017 122,888 122,354
Write-off impairment on marketable securities 0 86 0
Stock-based compensation 13 70 139
Amortization of Series A Notes discount (premium) and related issuance costs, net (92) (92) (92)
Deferred income taxes and reserve, net 28,774 2,683 15,928
Loss (gain) on sale of property, plant and equipment (2,440) (3,347) 1,742
Loss (gain) on sale of investments and deconsolidation of subsidiary 1,358 (16,734) 33
Equity in net (earnings) losses of affiliated companies and partnerships, net of dividend received() (1,987) (1,728) 19,999
Changes in operating assets and liabilities, net of amounts acquired:      
Decrease (increase) in short and long-term trade receivables, and prepaid expenses (315,236) (297,439) 31,860
Decrease (increase) in inventories, net (59,699) (8,040) 39,801
Increase (decrease) in trade payables, other payables and accrued expenses 63,273 253,413 (74,280)
Severance, pension and termination indemnities, net 2,003 315 (799)
Increase (decrease) in advances received from customers 30,287 (82,881) 71,282
Net cash provided by operating activities 100,893 208,002 434,828
CASH FLOWS FROM INVESTING ACTIVITIES      
Purchase of property, plant and equipment and other assets (107,880) (124,221) (99,175)
Acquisitions of subsidiaries and business operations (Schedule A) (25,440) 0 (141,436)
Investments in affiliated companies and other companies (4,964) (19,277) (23,852)
Deconsolidation of subsidiary() 0 (1,538) 0
Proceeds from sale of property, plant and equipment 6,270 15,745 11,563
Proceeds from sale of investments 12,067 0 0
Investment in long-term deposits (1,396) (417) (396)
Proceeds from sale of long-term deposits 176 894 721
Investment in short-term deposits and available-for-sale marketable securities (40,893) (25,622) (57,175)
Proceeds from sale of short-term deposits and available-for-sale marketable securities 46,491 36,619 128,187
Net cash used in investing activities (115,569) (117,817) (181,563)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from exercise of options 119 505 1,616
Repayment of long-term loans (167,425) (48,250) (226,635)
Proceeds from long-term loans 118,623 0 196,550
Repayment of Series A Notes (55,532) (55,532) (55,532)
Dividends paid () [1] (75,300) (68,447) (69,792)
Change in short-term bank credit and loans, net 127,455 5,027 (557)
Net cash provided by (used in) financing activities (52,060) (166,697) (154,350)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS (66,736) (76,512) 98,915
CASH AND CASH EQUIVALENTS AT THE BEGINNING OF THE YEAR 222,810 299,322 200,407
CASH AND CASH EQUIVALENTS AT THE END OF THE YEAR 156,074 222,810 299,322
dividend received from affiliated companies and partnership 9,374 3,496 24,541
Cash paid during the year for:      
Income taxes, net 47,707 28,603 37,410
Interest $ 9,379 $ 6,254 $ 3,631
[1] Dividends paid in 2015 included approximately $8,222 in dividends paid by a subsidiary to non-controlling interests.