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Consolidated Statements Of Cash Flows - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income $ 208,655 $ 240,622 $ 238,808
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 118,205 114,017 122,888
Write-off impairment 13,334 0 86
Stock-based compensation 1,387 13 70
Amortization of Series A Notes discount (premium) and related issuance costs, net (92) (92) (92)
Deferred income taxes and reserve, net 13,724 28,774 2,683
Loss (gain) on sale of property, plant and equipment 2,080 (2,440) (3,347)
Loss (gain) on sale of investments and deconsolidation of subsidiaries (41,822) 1,358 (16,734)
Equity in net (earnings) losses of affiliated companies and partnerships, net of dividend received() 17,929 (1,987) (1,728)
Changes in operating assets and liabilities, net of amounts acquired:      
Increase in short and long-term trade and unbilled receivables and contract assets, net and prepaid expenses (89,099) (315,236) (297,439)
Increase in inventories, net (117,221) (59,699) (8,040)
Increase (decrease) in trade payables, other payables and accrued expenses (89,956) 63,273 253,413
Severance, pension and termination indemnities, net (31,363) 2,003 315
Increase (decrease) in contract liabilities (customer advances) 185,898 30,287 (82,881)
Net cash provided by operating activities 191,659 100,893 208,002
CASH FLOWS FROM INVESTING ACTIVITIES      
Purchase of property, plant and equipment and other assets (102,301) (107,880) (124,221)
Acquisitions of subsidiaries and business operations (Schedule A) (504,447) (25,440) 0
Investments in affiliated companies and other companies (7,538) (4,964) (19,277)
Deconsolidation of subsidiary (Schedule B) (2,873) 0 (1,538)
Proceeds from sale of property, plant and equipment 4,388 6,270 15,745
Proceeds from sale of investments 0 12,067 0
Investment in long-term deposits (183) (1,396) (417)
Proceeds from sale of long-term deposits 82 176 894
Investment in short-term deposits and available-for-sale marketable securities (10,361) (40,893) (25,622)
Proceeds from sale of short-term deposits and available-for-sale marketable securities 30,363 46,491 36,619
Net cash used in investing activities (592,870) (115,569) (117,817)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from exercise of options 48 119 505
Repayment of long-term loans (775) (167,425) (48,250)
Proceeds from long-term loans 342,528 118,623 0
Repayment of Series A Notes (55,532) (55,532) (55,532)
Dividends paid (75,305) (75,300) (68,447)
Change in short-term bank credit and loans, net 242,652 127,455 5,027
Net cash used in financing activities 453,616 (52,060) (166,697)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 52,405 (66,736) (76,512)
CASH AND CASH EQUIVALENTS AT THE BEGINNING OF THE YEAR 156,074 222,810 299,322
CASH AND CASH EQUIVALENTS AT THE END OF THE YEAR 208,479 156,074 222,810
Dividends received from affiliated companies and partnerships 15,707 9,374 3,496
Cash paid during the year for:      
Income taxes, net 26,463 47,707 28,603
Interest $ 30,304 $ 16,139 $ 6,254