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CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Cash flows from operating activities:      
Profit (loss) for the year $ 24,573 $ (5,822) [1] $ (358,613) [1]
Adjustments to reconcile net profit (loss) to net cash provided by operating activities:      
Income tax expense (benefit) 24,235 (14,821) (46,695)
Depreciation and amortization charges, operating allowances and write-downs 119,137 104,529 125,677
Finance income (5,374) (3,708) (1,536)
Finance costs 62,022 65,412 30,251
Financial derivative (gain) loss (2,838) 6,850  
Exchange differences 14,136 (8,214) 3,513
Impairment losses 58,919 30,957 268,089
Bargain purchase gain (40,142)    
Loss (gain) due to changes in the value of assets 7,623 (7,504) (1,891)
(Gain) loss on disposal of non-current assets (14,564) 4,316 (340)
Share-based compensation 2,798 2,405  
Other loss   2,613 40
Changes in operating assets and liabilities:      
(Increase) decrease in inventories (101,024) (16,274) 108,207
(Increase) decrease in trade and other receivables (25,807) 50,168 56,297
Increase in trade and other payables 55,410 17,613 28,572
Other amounts paid due to operating activities (25,901) (12,251) (50,001)
Income tax paid (36,408) (26,764) (10,933)
Interest paid (43,018) (39,130) (29,468)
Net cash provided by operating activities 73,777 150,375 121,169
Cash flows from investing activities:      
Interest and finance income received 3,833 952 1,554
Payments due to investments:      
Acquisition of subsidiaries (20,379)    
Other intangible assets (3,313) (811) (4,914)
Property, plant and equipment (106,136) (74,616) (71,119)
Other financial assets   (343) (9,912)
Disposals:      
Disposal of subsidiaries 20,533    
Other non-current assets 12,734    
Other 6,853   110
Net cash used by investing activities (85,875) (74,818) (84,281)
Cash flows from financing activities:      
Dividends paid (20,642)   (54,988)
Payment for debt issuance costs (4,905) (16,765)  
Repayment of other financial liabilities (33,096)    
Proceeds from debt issuance   350,000  
Increase (decrease) in bank borrowings:      
Borrowings 252,200 31,455 124,384
Payments (106,514) (453,948) (81,237)
Proceeds from stock option exercises 240 180  
Other amounts (paid) received due to financing activities (13,880) (24,319) 61,758
Payments to acquire or redeem own shares (20,100)    
Net cash provided (used) by financing activities 53,303 (113,397) 49,917
Total net cash flows for the year 41,205 (37,840) 86,805
Beginning balance of cash and cash equivalents 184,472 196,982 116,666
Exchange differences on cash and cash equivalents in foreign currencies (9,030) 25,330 (6,489)
Ending balance of cash and cash equivalents $ 216,647 $ 184,472 $ 196,982
[1] The amounts for 2016 have been re-presented to show the results of the Spanish energy business within profit (loss) from continuing operations, as described in Note 1 to the consolidated financial statements.