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Consolidated Statements of Cash Flows
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2019
TWD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
TWD ($)
Dec. 31, 2017
TWD ($)
Cash flows from operating activities        
Profit before income tax – continuing operations $ 3,022,253 $ 101,045 $ 1,782,442 $ 1,532,416
Profit before income tax – discontinued operations       1,814,953
Profit before income tax including discontinued operations 3,022,253 101,045 1,782,442 3,347,369
Adjustments to reconcile profit before income tax to net cash flows :        
Depreciation expenses 3,731,914 124,771 3,376,579 2,899,278
Reversal for impairment of accounts and notes receivable       (87)
Expected (reversal of) credit losses (806) (27) 348  
Interest expense 171,075 5,720 152,416 192,839
Interest income (64,368) (2,152) (49,971) (53,587)
Dividend income (585) (20) (571)  
Impairment loss on property, plant and equipment 9,938 332   956
Gain on valuation of financial assets at fair value through profit or loss (1,317) (44) (1,485) (637)
Gain on disposal of property, plant and equipment, net (20,271) (678) (14,274) (132,774)
Gain on disposal of a subsidiary       (1,843,234)
Insurance compensation income (10,435) (349) (147) (486,858)
Share of loss of associates 154,926 5,179 300,101 179,491
Gain on disposal of investment in associates (973,609) (32,551)   (16,929)
Share-based payments 822 27 41,043 123,021
Deferred revenue (12,279) (410) (42,857) (11,995)
Financial assets at fair value through profit or loss 1,750 59 1,447 637
Current contract assets (78,013) (2,608) (44,858)  
Accounts and notes receivable 294,409 9,843 (733,695) 127,800
Accounts receivable – related parties (905) (30) (129) (240)
Other receivables (8,082) (270) 5,238 (15,644)
Other receivables – related parties 12,437 416 16,317 35,855
Inventories 11,193 374 (58,101) (63,910)
Prepayments (4,333) (145) 46,781 126,708
Other financial assets       1,600
Financial assets at fair value through profit or loss 1,750 59 1,447 637
Other non-current assets 6,914 231 6,914 6,914
Current contract liabilities (201) (7) 280  
Accounts payable 182,277 6,094 (50,689) (147,859)
Accounts payable – related parties (347) (12) 121 263
Other payables 331,207 11,073 (301,711) 438,682
Other payables – related parties (218) (7) 182 (43,144)
Current provisions (27,354) (914) (27,803) 46,592
Receipts in advance       (5,913)
Current refund liabilities (6,627) (222) (37,529)  
Other current liabilities 1,442 48 (475) (15,469)
Net defined benefit liability, non-current (19,742) (660) (17,722) (17,604)
Cash generated from operations 6,703,065 224,108 4,348,192 4,672,121
Interest received 67,105 2,244 48,590 47,815
Dividends received 20,585 688 6,184 14,325
Interest paid (171,149) (5,722) (154,307) (189,381)
Income tax paid (637,169) (21,303) (119,473) (387,590)
Net cash generated from operating activities 5,982,437 200,015 4,129,186 4,157,290
Cash flows from investing activities        
Proceeds from disposal of property, plant and equipment 21,434 717 18,160 306,634
Proceeds from insurance compensation 10,435 349 147 486,858
Net cash flow from disposal of a subsidiary       1,781,213
Proceeds from disposal of investment in associate 1,180,179 39,458    
Acquisition of property, plant and equipment (5,440,621) (181,900) (4,154,198) (4,682,705)
Acquisition of available-for-sale financial assets       (10,940)
Acquisition of investment in associate     (794,694) (1,373,486)
(Increase) decrease in refundable deposits 861 29 (664) (11)
Increase in other non-current assets (45,480) (1,520)    
Increase in other non-current liabilities 4,500 150    
(Increase) decrease in financial assets at amortized cost 30,851 1,031 (198,030)  
Increase in other financial assets       (964)
Net cash used in investing activities (4,237,841) (141,686) (5,129,279) (3,493,401)
Cash flows from financing activities        
Proceeds from short-term bank loans 834,955 27,916 1,053,202 5,560,354
Payments on short-term bank loans (834,955) (27,916) (2,022,555) (4,278,518)
Payment on lease liabilities (48,161) (1,610)    
Proceeds from long-term bank loans     12,663,550 148,829
Payments on long-term bank loans (756,450) (25,291) (12,553,300) (1,124,699)
(Decrease) increase in guarantee deposits 3   (279) (33)
Cash dividend paid (872,718) (29,178) (256,806) (257,026)
Cash distribution from capital surplus       (599,728)
Payments on capital reduction     (1,284,223)  
Net cash used in financing activities (1,677,326) (56,079) (2,400,411) (550,821)
Net increase (decrease) in cash and cash equivalents 67,270 2,250 (3,400,504) 113,068
Effect of foreign exchange rate changes (5,708) (191) 7,312 (38,617)
Cash and cash equivalents at beginning of year 4,642,522 155,216 8,035,714 7,961,263
Cash and cash equivalents at end of year $ 4,704,084 $ 157,275 $ 4,642,522 $ 8,035,714