XML 126 R112.htm IDEA: XBRL DOCUMENT v3.19.1
Identification and business activity (Details 2) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Operating income      
Net sales $ (1,122,995) $ (1,223,942) $ (1,015,670)
Total income (1,167,381) (1,274,378) (1,068,791)
Operating costs      
Cost of sales, excluding depreciation and amortization 982,957 980,254 824,973
Depreciation and amortization (241,286) (213,722) (192,647)
Mining royalties (21,526) (31,217) (27,611)
Total operating costs (982,957) (980,254) (824,973)
Gross loss (184,424) (294,124) (243,818)
Operating income (expenses), net      
Reversal of Impairment loss of long-lived assets, note 11(b) 0 11,770 0
Administrative expenses (78,760) (83,597) (81,692)
Impairment loss of long-lived assets   (21,620) 0
Others, net 68,683 258,826 24,107,000
Total operating expenses, net (130,669) (188,608) (111,622)
Operating loss (53,755) (105,516) (132,196)
Other income (expense), net      
Finance costs, note 15(b) (38,456) (34,623) (31,580)
Net gain (loss) from currency exchange difference 1,366 (2,928) (2,638)
Total other expenses, net (31,280) (12,971) (387,433)
Loss before income tax (7,203) (10,098) (19,069)
Loss from discontinued operations 7,203 10,098 19,073
Discontinued Operations Mining Activities [Member]      
Operating income      
Net sales 0 0 1,149
Total income 0 0 1,149
Operating costs      
Cost of sales, excluding depreciation and amortization 0 0 (4,842)
Exploration 0 0 (3,777)
Depreciation and amortization 0 0 (5,049)
Mining royalties 0 0 (11)
Total operating costs 0 0 (13,679)
Gross loss 0 0 (12,530)
Operating income (expenses), net      
Changes in provision for closure of mining units, note 15(b) (6,013) (12,701) (3,365)
Derecognition of long-lived assets (2,837) 0 0
Net loss in sale of mining units 0 (18,550) (3,014)
Administrative expenses 0 (941) (111)
Reversal (provision) for contingencies 0 (423) 901
Gain (loss) for sale in other assets 0 (162) 3,200
Reversal of provision for closure of mining units for sale of mining units, note 15(b) 0 11,700 0
Reversal of provision for impairment of inventories, note 8(c) 0 1,345 706
Impairment loss of long-lived assets 0 0 (2,043)
Others, net (1,147) (6,871) (1,793)
Total operating expenses, net (7,160) (9,406) (5,519)
Operating loss (7,160) (9,406) (18,049)
Other income (expense), net      
Finance costs, note 15(b) (54) (694) (970)
Net gain (loss) from currency exchange difference 11 2 (50)
Total other expenses, net (43) (692) (1,020)
Income tax 0 0 (4)
Loss from discontinued operations $ (7,203) $ (10,098) $ (19,073)
Loss from the discontinued operations, per basic and diluted share, express in U. S. dollars $ (30) $ (40) $ (70)