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Consolidated Statements of Cash Flows
$ in Thousands, ฿ in Millions
 12 Months Ended
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Operating activities:      
Profit/(loss) before tax $ 18,668 $ 6,535 $ (8,645)
Adjustments to reconcile profit/(loss) before tax to net cash provided by operating activities:      
Depreciation 4,972 5,451 5,598
Impairment of property, plant and equipment 223 2,524 0
Reversal of impairment loss of investment properties     (12)
Amortization of prepaid land lease payments 35 57 59
Gain on disposal of investment property   (4,466) (32)
Amortization of intangible assets 49 46 36
Gain on disposal of property, plant and equipment (99) (100) (41)
(Gain) loss on disposal of assets classified as held for sale (4,525) 11  
Adjustment for loss (gain) on fair value of derivatives 332 (171) (20)
Dividend income (100) (96) (99)
Finance income (876) (1,045) (697)
Finance costs 1,221 1,147 1,547
Share of loss of associates 3 710 801
Impairment of investment in associates   126  
Impairment for trade receivables 302 279 332
Impairment (reversal of impairment) for trade receivables for related parties 27 (1) (16)
Impairment of other receivable   191  
Impairment (write-back of impairment) of inventories 532 (3,306) 1,481
Unrealized foreign exchange difference, net (1,771) 1,244 1,013
Loss on liquidation of subsidiary 261    
Changes in operating assets and liabilities      
Trade and other receivable, net (17,438) (9,949) 15,660
Inventories (11,523) 7,713 16,042
Prepayment and other current assets 123 1,704 (2,357)
Amounts due to/from related parties 2,733 (7) (7,611)
Other non-current assets (398) (261) (84)
Trade and other payables, accruals, other current liabilities and other non-current liabilities (6,778) 2,334 (10,837)
Net cash flows (used in) provided by operating activities (14,027) 10,670 12,118
Dividend received 100 96 99
Interest received 858 869 688
Interest paid (1,043) (941) (1,371)
Income tax paid (2,787) (1,680) (2,747)
Net cash (used in) provided by operating activities (16,899) 9,014 8,787
Investing activities:      
Purchases of property, plant and equipment (4,903) (5,044) (7,417)
Purchases of intangible assets (10) (126) (27)
Purchases of investment properties (84)    
Proceeds from disposal of held for sale assets 8,011 210  
Proceeds from disposal of property, plant and equipment 510 113 70
Proceeds from disposal of other financial assets-held to maturity 340    
Proceeds from disposal of investment property   4,695 53
Net cash provided by (used in) investing activities 3,864 (152) (7,321)
Financing activities:      
Dividend paid to non-controlling shareholders of subsidiaries (1,943) (1,159) (2,035)
Dividend paid to company's shareholders (1,382)    
Repayments of borrowings (17,306) (35,346) (41,553)
Proceeds from borrowings 27,714 26,120 28,986
Change in financial lease liabilities (41) (28) (31)
Net cash provided by (used in) financing activities 7,042 (10,413) (14,633)
Effect of exchange rate 3,855 (1,521) (4,393)
Net decrease in cash and cash equivalents (2,138) (3,072) (17,560)
Cash and cash equivalents at beginning of year 48,231 51,303 68,863
Cash and cash equivalents at end of year $ 46,093 $ 48,231 $ 51,303