Document and Entity Information
Document and Entity Information | 12 Months Ended |
Dec. 31, 2017shares | |
Document - Document and Entity Information [Abstract] | |
Document Type | 20-F |
Amendment Flag | false |
Document Period End Date | Dec. 31, 2017 |
Document Fiscal Year Focus | 2,017 |
Document Fiscal Period Focus | FY |
Trading Symbol | IMOS |
Entity Registrant Name | ChipMOS TECHNOLOGIES INC. |
Entity Central Index Key | 1,123,134 |
Current Fiscal Year End Date | --12-31 |
Entity Well-known Seasoned Issuer | No |
Entity Current Reporting Status | Yes |
Entity Filer Category | Accelerated Filer |
Entity Common Stock, Shares Outstanding | 856,059,061 |
Consolidated Statements of Comp
Consolidated Statements of Comprehensive Income $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($)$ / shares | Dec. 31, 2017USD ($)$ / shares | Dec. 31, 2016TWD ($)$ / shares | Dec. 31, 2015TWD ($)$ / shares | |
Revenue | $ 17,940,855 | $ 605,292 | $ 18,387,593 | $ 18,837,089 |
Cost of revenue | (14,703,729) | (496,077) | (14,745,472) | (14,685,514) |
Gross profit | 3,237,126 | 109,215 | 3,642,121 | 4,151,575 |
Research and development expenses | (985,873) | (33,261) | (838,866) | (747,779) |
Sales and marketing expenses | (64,397) | (2,173) | (72,918) | (90,345) |
General and administrative expenses | (639,809) | (21,586) | (822,068) | (770,075) |
Other operating income (expenses), net | 692,834 | 23,375 | 90,306 | 105,051 |
Operating profit | 2,239,881 | 75,570 | 1,998,575 | 2,648,427 |
Finance costs | (217,283) | (7,331) | (179,116) | (142,511) |
Other non-operating income (expenses), net | (490,182) | (16,538) | (119,024) | 340,140 |
Profit before income tax | 1,532,416 | 51,701 | 1,700,435 | 2,846,056 |
Income tax expense | (550,487) | (18,572) | (177,120) | (935,855) |
Profit from continuing operations | 981,929 | 33,129 | 1,523,315 | 1,910,201 |
Profit (loss) from discontinued operations | 1,814,953 | 61,233 | (122,105) | (34,233) |
Profit for the year | 2,796,882 | 94,362 | 1,401,210 | 1,875,968 |
Other comprehensive income (loss) that will be reclassified to profit or loss in subsequent periods: | ||||
Exchange differences on translation of foreign operations | (232,652) | (7,849) | (200,280) | (12,376) |
Share of other comprehensive income of associates that will be reclassified to profit or loss | 678 | 23 | ||
Net other comprehensive loss that will be reclassified to profit or loss in subsequent periods | (231,974) | (7,826) | (200,280) | (12,376) |
Other comprehensive income (loss) that will not be reclassified to profit or loss in subsequent periods: | ||||
Other comprehensive income (loss) on remeasurements of defined benefit plans | 50,838 | 1,715 | (43,383) | (41,758) |
Share of other comprehensive loss of associates that will not be reclassified to profit or loss | (124) | (4) | (133) | (165) |
Income tax effect that will not be reclassified to profit or loss | (8,642) | (292) | 7,375 | 7,099 |
Net other comprehensive income (loss) that will not be reclassified to profit or loss in subsequent periods | 42,072 | 1,419 | (36,141) | (34,824) |
Other comprehensive loss for the year, net of income tax | (189,902) | (6,407) | (236,421) | (47,200) |
Total comprehensive income | 2,606,980 | 87,955 | 1,164,789 | 1,828,768 |
Profit (loss) attributable to: | ||||
Equity holders of the Company - Continuing operations | 981,929 | 33,129 | 1,829,327 | 2,164,557 |
Equity holders of the Company - Discontinued operations | 1,814,953 | 61,233 | (122,105) | (34,233) |
Predecessors' interests | (306,012) | (291,429) | ||
Non-controlling interests | 37,073 | |||
Profit for the year | 2,796,882 | 94,362 | 1,401,210 | 1,875,968 |
Total comprehensive income (loss) attributable to: | ||||
Equity holders of the Company - Continuing operations | 1,079,672 | 36,426 | 1,788,878 | 2,167,256 |
Equity holders of the Company - Discontinued operations | 1,527,308 | 51,529 | (318,077) | (62,126) |
Predecessors' interests | (306,012) | (291,429) | ||
Non-controlling interests | 15,067 | |||
Total comprehensive income | $ 2,606,980 | $ 87,955 | $ 1,164,789 | $ 1,828,768 |
Ordinary shares [member] | ||||
Basic earnings per share: | ||||
Equity holders of the Company - Continuing operations | (per share) | $ 1.16 | $ 0.04 | $ 2.13 | $ 2.47 |
Equity holders of the Company - Discontinued operations | (per share) | 2.14 | 0.07 | (0.14) | (0.04) |
Equity holders of the Company | (per share) | 3.30 | 0.11 | 1.99 | 2.43 |
Predecessors' interests | (per share) | (0.35) | (0.33) | ||
Total basic earnings per share | (per share) | 3.30 | 0.11 | 1.64 | 2.10 |
Diluted earnings per share: | ||||
Equity holders of the Company - Continuing operations | (per share) | 1.13 | 0.04 | 2.11 | 2.44 |
Equity holders of the Company - Discontinued operations | (per share) | 2.10 | 0.07 | (0.14) | (0.04) |
Equity holders of the Company | (per share) | 3.23 | 0.11 | 1.97 | 2.40 |
Predecessors' interests | (per share) | (0.35) | (0.33) | ||
Total diluted earnings per share | (per share) | 3.23 | 0.11 | 1.62 | 2.07 |
American depositary share (each representing 20 common shares) [member] | ||||
Basic earnings per share: | ||||
Equity holders of the Company - Continuing operations | (per share) | 23.20 | 0.78 | 42.56 | 49.34 |
Equity holders of the Company - Discontinued operations | (per share) | 42.87 | 1.45 | (2.84) | (0.78) |
Equity holders of the Company | (per share) | 66.07 | 2.23 | 39.72 | 48.56 |
Predecessors' interests | (per share) | (7.12) | (6.64) | ||
Total basic earnings per share | (per share) | 66.07 | 2.23 | 32.60 | 41.92 |
Diluted earnings per share: | ||||
Equity holders of the Company - Continuing operations | (per share) | 22.68 | 0.77 | 42.21 | 48.73 |
Equity holders of the Company - Discontinued operations | (per share) | 41.93 | 1.41 | (2.82) | (0.77) |
Equity holders of the Company | (per share) | 64.61 | 2.18 | 39.39 | 47.96 |
Predecessors' interests | (per share) | (7.06) | (6.56) | ||
Total diluted earnings per share | (per share) | $ 64.61 | $ 2.18 | $ 32.33 | $ 41.40 |
Consolidated Statements of Fina
Consolidated Statements of Financial Position $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Non-current assets | |||
Available-for-sale financial assets | $ 20,890 | $ 705 | $ 9,960 |
Investment in associates | 3,433,332 | 115,834 | 369,329 |
Property, plant and equipment, net | 15,265,311 | 515,024 | 13,497,218 |
Deferred tax assets | 212,372 | 7,165 | 249,806 |
Refundable deposits | 21,342 | 720 | 21,321 |
Other financial assets - non-current | 70,241 | 2,370 | 70,677 |
Other non-current assets | 35,474 | 1,197 | 181,692 |
Total non-current assets | 19,058,962 | 643,015 | 14,400,003 |
Current assets | |||
Inventories | 1,929,239 | 65,089 | 1,877,982 |
Accounts and notes receivable | 4,015,734 | 135,484 | 4,140,246 |
Accounts receivable - related parties | 11 | ||
Other receivables | 56,716 | 1,914 | 57,411 |
Other receivables - related parties | 4,534 | 153 | |
Current tax assets | 104,906 | 3,539 | |
Other financial assets - current | 1,600 | ||
Prepayments | 54,126 | 1,826 | 142,281 |
Cash and cash equivalents | 8,035,714 | 271,110 | 7,571,366 |
Total current assets other than non-current assets held for sale | 14,200,980 | 479,115 | 13,790,886 |
Non-current assets held for sale | 3,105,071 | ||
Total current assets | 14,200,980 | 479,115 | 16,895,957 |
Total assets | 33,259,942 | 1,122,130 | 31,295,960 |
Capital and reserves | |||
Issued capital | 8,862,971 | 299,021 | 8,869,663 |
Capital surplus | 6,271,448 | 211,587 | 6,888,826 |
Retained earnings | |||
Legal reserve | 1,166,517 | 39,356 | 1,137,837 |
Unappropriated retained earnings | 2,815,966 | 95,006 | 260,989 |
Other reserve | |||
Foreign currency translation reserve | 65,593 | 2,213 | 10,600 |
Unrealized gain on valuation of available-for-sale financial assets | 678 | 23 | |
Amounts recognized in other comprehensive income and accumulated in equity relating to non-current assets held for sale | 287,645 | ||
Unearned employee awards | (54,570) | (1,841) | (200,204) |
Treasury stock | (1,007,654) | (33,997) | (1,007,654) |
Total equity | 18,120,949 | 611,368 | 16,247,702 |
Non-current liabilities | |||
Bank loans - non-current | 7,498,853 | 252,998 | 9,687,720 |
Long-term deferred revenue | 24,898 | 840 | |
Lease payable - non-current | 18,057 | 609 | 29,311 |
Deferred tax liabilities | 174,293 | 5,880 | 92,543 |
Net defined benefit liability, non-current | 478,526 | 16,145 | 546,968 |
Guarantee deposits | 1,371 | 46 | 1,404 |
Total non-current liabilities | 8,195,998 | 276,518 | 10,357,946 |
Current liabilities | |||
Accounts payable | 687,960 | 23,210 | 825,062 |
Accounts payable - related parties | 226 | 8 | |
Payables to contractors and equipment suppliers | 713,313 | 24,066 | 550,346 |
Other payables | 1,980,182 | 66,808 | 1,412,054 |
Other payables - related parties | 36 | 1 | |
Current tax liabilities | 273,177 | 9,216 | 115,916 |
Provisions - current | 127,311 | 4,295 | 80,719 |
Receipts in advance | 5,209 | 176 | 1,324 |
Other current liabilities | 31,275 | 1,055 | 43,676 |
Lease payable - current | 11,785 | 398 | 11,291 |
Bank loans - current portion | 2,143,168 | 72,307 | 1,062,285 |
Short-term bank loans | 969,353 | 32,704 | |
Total current liabilities other than liabilities directly related to non-current assets held for sale | 6,942,995 | 234,244 | 4,102,673 |
Liabilities directly related to non-current assets held for sale | 587,639 | ||
Total current liabilities | 6,942,995 | 234,244 | 4,690,312 |
Total liabilities | 15,138,993 | 510,762 | 15,048,258 |
Total equity and liabilities | $ 33,259,942 | $ 1,122,130 | $ 31,295,960 |
Consolidated Statements of Chan
Consolidated Statements of Changes in Equity $ in Thousands, $ in Thousands | TWD ($) | USD ($) | Issued capital [member]TWD ($) | Capital surplus [member]TWD ($) | Legal reserve [member]TWD ($) | Unappropriated retained earnings [member]TWD ($) | Foreign currency translation reserve [member]TWD ($) | Amounts recognized in other comprehensive income (loss) and accumulated in equity relating to non-current assets held for sale [member]TWD ($) | Unearned employee awards [member]TWD ($) | Treasury stock [member]TWD ($) | Treasury stock [member]USD ($) | Attributable to equity holders of the company total [member]TWD ($) | Equity attributable to predecessors' interests [member]TWD ($) | Unrealized gain (loss) in available-for-sale financial assets [Member]TWD ($) | Non-controlling interests [member]TWD ($) |
Beginning Balance at Dec. 31, 2014 | $ 23,196,249 | $ 8,646,193 | $ 2,272,838 | $ 582,927 | $ 6,545,839 | $ 36,074 | $ 18,083,871 | $ 2,490,693 | $ 2,621,685 | ||||||
Appropriations of prior year's earnings: | |||||||||||||||
Legal reserve (Note 20) | 331,863 | (331,863) | |||||||||||||
Cash dividends - the Company (Notes 11 and 20) | (840,207) | (1,999,225) | (1,999,225) | 1,159,018 | |||||||||||
Cash dividends - predecessors' interests | (125,293) | (125,293) | |||||||||||||
Share-based payments | 174,965 | 51,233 | 51,233 | 123,168 | 564 | ||||||||||
Restricted shares | 106,523 | 156,550 | 397,296 | $ (447,323) | 106,523 | ||||||||||
Repurchase of shares (Note 21) | (1,862,362) | $ (633,737) | (633,737) | (1,228,625) | |||||||||||
Cancellation of shares (Note 21) | (200,000) | (56,823) | (376,914) | 633,737 | |||||||||||
Acquisition of the interest of a subsidiary (Note 28) | (1,444,224) | 359,323 | 1,091,305 | (275,500) | 17,964 | 1,193,092 | (2,637,316) | ||||||||
Profit (loss) for the year | 1,875,968 | 2,130,324 | 2,130,324 | (291,429) | 37,073 | ||||||||||
Other comprehensive income (loss) for the year | (47,200) | (34,824) | 9,630 | (25,194) | $ (22,006) | ||||||||||
Ending Balance at Dec. 31, 2015 | 21,034,419 | 8,962,066 | 3,755,849 | 914,790 | 5,657,837 | 63,668 | (447,323) | 18,906,887 | 2,127,532 | ||||||
Appropriations of prior year's earnings: | |||||||||||||||
Legal reserve (Note 20) | 223,047 | (223,047) | |||||||||||||
Cash dividends - the Company (Notes 11 and 20) | (1,792,553) | (1,792,553) | (1,792,553) | ||||||||||||
Share-based payments | (71,913) | 56,689 | 56,689 | (128,602) | |||||||||||
Restricted shares | 262,235 | 4,347 | 10,755 | 14 | 247,119 | 262,235 | |||||||||
Repurchase of shares (Note 21) | (1,007,654) | (1,007,654) | (1,007,654) | ||||||||||||
Profit (loss) for the year | 1,401,210 | 1,707,222 | 1,707,222 | (306,012) | |||||||||||
Other comprehensive income (loss) for the year | (236,421) | (36,141) | (200,280) | (236,421) | |||||||||||
Reclassification to equity related to non-current assets held for sale | (287,645) | $ 287,645 | |||||||||||||
Effect of capital reorganization (Note 29) | (3,341,621) | (96,750) | 3,065,533 | (5,052,343) | 434,857 | (1,648,703) | $ (1,692,918) | ||||||||
Ending Balance at Dec. 31, 2016 | 16,247,702 | 8,869,663 | 6,888,826 | 1,137,837 | 260,989 | 10,600 | 287,645 | (200,204) | (1,007,654) | $ 16,247,702 | |||||
Appropriations of prior year's earnings: | |||||||||||||||
Legal reserve (Note 20) | 28,680 | (28,680) | |||||||||||||
Cash dividends - the Company (Notes 11 and 20) | (257,026) | (257,026) | |||||||||||||
Cash distribution from capital surplus (Notes 11 and 20) | (599,728) | (599,728) | |||||||||||||
Restricted shares | 123,021 | (6,692) | (17,650) | 1,729 | 145,634 | ||||||||||
Repurchase of shares (Note 21) | 0 | $ 0 | |||||||||||||
Cancellation of shares (Note 21) | 0 | $ 0 | |||||||||||||
Profit (loss) for the year | 2,796,882 | $ 94,362 | 2,796,882 | ||||||||||||
Other comprehensive income (loss) for the year | (189,902) | (6,407) | 42,072 | (232,652) | $ 678 | ||||||||||
Effect of disposal of subsidiary | 287,645 | $ (287,645) | |||||||||||||
Ending Balance at Dec. 31, 2017 | $ 18,120,949 | $ 611,368 | $ 8,862,971 | $ 6,271,448 | $ 1,166,517 | $ 2,815,966 | $ 65,593 | $ (54,570) | $ (1,007,654) | $ 678 |
Consolidated Statements of Cash
Consolidated Statements of Cash Flows $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Cash flows from operating activities | ||||
Profit before income tax - continuing operations | $ 1,532,416 | $ 51,701 | $ 1,700,435 | $ 2,846,056 |
Profit (loss) before income tax - discontinued operations | 1,814,953 | 61,233 | (122,105) | (34,233) |
Profit before income tax including discontinued operations | 3,347,369 | 112,934 | 1,578,330 | 2,811,823 |
Adjustments to reconcile profit before income tax to net cash flows : | ||||
Depreciation of property, plant and equipment | 2,899,278 | 97,816 | 3,228,441 | 3,018,977 |
Amortization of assets | 2,838 | 2,946 | ||
Allowance (reversal) for impairment of accounts and notes receivable | (87) | (3) | 87 | |
Interest expense | 192,839 | 6,506 | 145,151 | 127,035 |
Interest income | (53,587) | (1,808) | (42,307) | (68,283) |
Impairment of available-for-sale financial assets | 8,584 | |||
Impairment of property, plant and equipment | 956 | 32 | 8,198 | 1,478 |
Gain on disposal of property, plant and equipment, net | (132,774) | (4,480) | (6,839) | (1,640) |
Gain on disposal of a subsidiary | (1,843,234) | (62,187) | ||
Insurance compensation income | (486,858) | (16,426) | (7,033) | |
Share of (profit) loss of associates | 179,491 | 6,056 | (28,924) | (31,269) |
Gain on disposal of long-term investment in associates | (16,929) | (571) | ||
Donations | 127 | |||
Share-based payments | 123,021 | 4,151 | 356,463 | 207,242 |
Deferred income | (11,995) | (405) | (2,403) | (2,496) |
Accounts and notes receivable | 127,800 | 4,312 | (480,348) | 986,205 |
Accounts receivable - related parties | (240) | (8) | ||
Other receivables | (15,644) | (528) | (124,226) | (42,140) |
Other receivables - related parties | 35,855 | 1,210 | ||
Inventories | (63,910) | (2,156) | (347,133) | 36,974 |
Prepayments | 126,708 | 4,275 | 12,291 | 78,676 |
Other financial assets | 1,600 | 54 | 17,243 | 191,974 |
Other non-current assets | 6,914 | 233 | 6,914 | (42,061) |
Accounts payable | (147,859) | (4,988) | 215,555 | (366,445) |
Accounts payable - related parties | 263 | 9 | ||
Other payables | 438,682 | 14,800 | (249,607) | 46,054 |
Other payables - related parties | (43,144) | (1,456) | ||
Provisions - current | 46,592 | 1,572 | (16,184) | (21,683) |
Receipts in advance | (5,913) | (199) | 2,150 | (47,230) |
Other current liabilities | (15,469) | (522) | 22,878 | (12,851) |
Net defined benefit liability, non-current | (17,604) | (594) | (15,886) | (14,044) |
Cash generated from operations | 4,672,121 | 157,629 | 4,282,809 | 6,867,826 |
Interest received | 47,815 | 1,613 | 44,413 | 67,960 |
Dividend received | 14,325 | 483 | 5,730 | |
Interest paid | (189,381) | (6,389) | (145,668) | (127,568) |
Income tax paid | (387,590) | (13,077) | (499,293) | (1,412,427) |
Net cash generated from operating activities | 4,157,290 | 140,259 | 3,687,991 | 5,395,791 |
Cash flows from investing activities | ||||
Proceeds from disposal of property, plant and equipment | 306,634 | 10,345 | 59,134 | 48,275 |
Proceeds from insurance compensation | 486,858 | 16,426 | ||
Net cash flow from disposal of a subsidiary | 1,781,213 | 60,095 | ||
Acquisition of property, plant and equipment | (4,682,705) | (157,986) | (4,471,465) | (4,428,057) |
Acquisition of available-for-sale financial assets | (10,940) | (369) | ||
Acquisition of investment in associate | (1,373,486) | (46,339) | (116,000) | |
Decrease (increase) in refundable deposits | (11) | (1) | 407 | (589) |
Increase in other non-current assets | (139,304) | |||
Increase in other financial assets - current | (964) | (32) | (5,466) | (7,822) |
Net cash used in investing activities | (3,493,401) | (117,861) | (4,556,694) | (4,504,193) |
Cash flows from financing activities | ||||
Prepaid cost of issuing new shares | (42,774) | |||
Proceeds from short-term bank loans | 5,560,354 | 187,596 | 3,820,594 | 4,725,030 |
Payments on short-term bank loans | (4,278,518) | (144,349) | (4,969,469) | (5,344,425) |
Proceeds from long-term bank loans | 148,829 | 5,021 | 10,560,000 | 2,000,000 |
Payments on long-term bank loans | (1,124,699) | (37,945) | (6,200,567) | (1,508,153) |
Increase (decrease) in guarantee deposits | (33) | (1) | (44) | 405 |
Payments on repurchase of shares | (1,007,654) | (1,441,359) | ||
Acquisition of the interest of a subsidiary | (1,444,224) | |||
Cash paid in respect of share-based payments | (292,623) | (7,873) | ||
Cash dividend - the Company | (257,026) | (8,672) | (1,792,553) | (840,207) |
Cash distribution from capital surplus - the Company | (599,728) | (20,234) | ||
Cash dividend - Predecessors' interests | (125,293) | |||
Payments on capital reorganization | (3,341,621) | |||
Net cash used in financing activities | (550,821) | (18,584) | (3,223,937) | (4,028,873) |
Net increase (decrease) in cash and cash equivalents | 113,068 | 3,814 | (4,092,640) | (3,137,275) |
Effect of foreign exchange rate changes | (38,617) | (1,303) | (73,447) | (528) |
Cash and cash equivalents at beginning of year | 7,961,263 | 268,599 | 12,127,350 | 15,265,153 |
Cash and cash equivalents at end of year | $ 8,035,714 | $ 271,110 | $ 7,961,263 | $ 12,127,350 |
Corporate and group information
Corporate and group information | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Corporate and group information | 1. Corporate and group information ChipMOS TECHNOLOGIES INC. (the “Company” or “ChipMOS Taiwan”) was incorporated in the Republic of China (“ROC”) on July 28, 1997. The Company and its subsidiaries (collectively referred herein as the “Group”) are primarily engaged in the research, development, manufacturing and sale of high-integration and high-precision integrated circuits and related assembly and testing services. On April 11, 2014, the Company’s shares were listed on the Taiwan Stock Exchange (“TWSE”). On November 1, 2016, the Company’s American Depositary Shares (“ADSs”) was listed on the NASDAQ Global Select Market and traded under the ticker symbol “IMOS”. On June 17, 2015, the former 47.54%-owned subsidiary, ThaiLin Semiconductor Corp. (“ThaiLin”) was merged with and into ChipMOS Taiwan, with ChipMOS Taiwan being the surviving company after the merger. The transaction was treated as an equity transaction. Please see note 28 for detailed information. As of October 31, 2016, the former parent company, ChipMOS TECHNOLOGIES (Bermuda) LTD. (“ChipMOS Bermuda”) owned 60.25% of ChipMOS Taiwan’s outstanding shares, was merged with and into ChipMOS Taiwan, with the latter being the surviving company after the merger, pursuant to the agreement and plan of merger, dated January 21, 2016, by and between ChipMOS Bermuda and ChipMOS Taiwan (the “Merger”). Detailed information about the capital reorganization is provided in Note 2 ee). As of November 30, 2016, the Board of Directors of the Company approved an agreement to form a joint-venture between the Company and Tsinghua Unigroup Ltd. (“Tsinghua Unigroup”). Under the joint-venture agreement, ChipMOS TECHNOLOGIES (BVI) LTD. (“ChipMOS BVI”), a wholly-owned subsidiary of ChipMOS Taiwan, will sell 54.98% of the equity interests of its wholly-owned subsidiary, ChipMOS TECHNOLOGIES (Shanghai) LTD. (“ChipMOS Shanghai”), to a group led by Tsinghua Unigroup (“strategic investors”). After the consummation of such equity interest transfer, ChipMOS BVI will own 45.02% of the equity interests of ChipMOS Shanghai. As of December 31, 2016, the assets, liabilities and equity related to ChipMOS Shanghai have been reclassified as held for sale and presented as discontinued operations for satisfying the definition of discontinued operations. The equity transfer was completed in March 2017. Please see Note 18 for detailed information. |
Basis of preparation of financi
Basis of preparation of financial statements and principal accounting policies | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Basis of preparation of financial statements and principal accounting policies | 2. Basis of preparation of financial statements and principal accounting policies a) Basis of preparation These consolidated financial statements have been prepared in accordance with International Financial Reporting Standards (“IFRSs”), which collective term includes all applicable individual IFRSs, International Accounting Standards (“IASs”) issued by the International Accounting Standards Board (“IASB”) and Interpretations issued by the International Financial Reporting Interpretations Committee (“IFRIC”) of the IASB. The consolidated financial statements have been prepared on a historical cost basis, except for the defined benefit pension plans – plan assets measured at fair value. These consolidated financial statements are presented in New Taiwan dollars (“NT$”), which is the Company’s functional currency. b) New and amended standards adopted by the group Amendments to IAS 7 “Disclosure Initiative” This amendment requires that an entity shall provide more disclosures related to changes in liabilities arising from financing activities, including both changes arising from cash flows and non-cash c) New and revised International Financial Reporting Standards not yet adopted Amendments to IFRSs which have been published but are not mandatory for the financial year ending December 31, 2017 are not expected to have a material impact on the Group. Major Amendment to IFRSs that are not yet effective are listed below: New Standards, Interpretations and Amendments Effective date by IFRS 9, “Financial Instruments” January 1, 2018 IFRS 15, “Revenue from Contracts with Customers” January 1, 2018 IFRS 16, “Leases” January 1, 2019 When adopting the new standards effective from 2018, the Group will apply the new rules under IFRS 9 “Financial Instruments” (“IFRS 9”) and adopt IFRS 15 “Revenue from Contracts with Customers” (“IFRS 15”) using the modified retrospective approach from January 1, 2018. The significant effects of applying the new standards as of January 1, 2018 are summarized below: (a) Financial assets at fair value through other comprehensive income In accordance with IFRS 9, an entity at its sole option may irrevocably designate an investment in an equity instrument not held for dealing or trading purpose at initial recognition as financial assets at fair value through other comprehensive income. The Group expects to reclassify available-for-sale (b) Financial assets at fair value through profit or loss In accordance with IFRS 9, the Group expects to reclassify available-for-sale (c) Provision for impairment In line with the regulations under IFRS 9 on provision for impairment based on the expected credit loss model, as of January 1, 2018, contract assets will be decreased by NT$115 thousand (US$4 thousand), accounts receivable decreased by NT$1,819 thousand (US$61 thousand), other receivables decreased by NT$5 thousand (US$169), other receivables – related parties decreased by NT$2 thousand (US$67), and retained earnings decreased by NT$1,941 thousand (US$65 thousand). (d) Revenue recognition of customized products The Group provides high-integration and high-precision integrated circuits and related assembly and testing services based on the specifications as required by the customers. The revenue is recognized when the significant risks and rewards are transferred under existing accounting policies (refer to Note 2 u)), and the timing of recognition usually occurred upon service completion. Considering that the Group provides assembly and testing service to create or enhance a highly customized product and the customer controls the asset as it is created or enhanced, the revenue will be recognized over time based on the percentage of completion under IFRS 15. As of January 1, 2018, using the modified retrospective approach, the Group also elects the use of practical expedient to only account for incomplete contracts at the date of initial application. Hence all the work in process and finished goods accounted in inventories will be transferred to retained earnings and contract assets will be recognized. As a result, retained earnings will be increased by NT$46,607 thousand (US$1,572 thousand), inventory decreased by NT$208,505 thousand (US$7,035 thousand) and contract assets increased by NT$255,112 thousand (US$8,607 thousand). (e) Presentation of contract assets and contract liabilities In line with IFRS 15 requirements, the Group’s liabilities in relation to sales discounts to customers are recognized as contract liabilities, but were previously presented as current provisions on the consolidated statement of financial position. As of January 1, 2018, the balance is NT$70,156 thousand (US$2,367 thousand). (f) Recognition of deferred tax When initially adopting IFRS 9 and IFRS 15, the Group will have to recognize adjustments on the consolidated statement of financial position which would result to temporary differences. Accordingly, as of January 1, 2018, deferred tax assets will be decreased by NT$736 thousand (US$25 thousand) and deferred tax liabilities increased by NT$19,651 thousand (US$663 thousand). Other Amendments to IFRSs not listed above are not expected to have a material impact on the entity in the current or future reporting periods and on foreseeable future transactions. d) Basis of consolidation The consolidated financial statements include the accounts of ChipMOS Taiwan and all entities controlled by ChipMOS Taiwan. The financial statements of subsidiaries are prepared for the same reporting period as the Company, using consistent accounting policies. The results of subsidiaries are consolidated from the date on which the Group obtains control, and continue to be consolidated until the date that such control ceases. Profit or loss and each component of other comprehensive income are attributed to the owners of the parent of the Group and to the non-controlling non-controlling The Group reassesses whether or not it controls an investee if facts and circumstances indicate that there are changes to one or more of the three elements of control described in the accounting policy for subsidiaries below. Changes in the Group’s ownership interests in subsidiaries that do not result in the Group losing control over the subsidiaries are accounted for as equity transactions. The carrying amounts of the Group’s interests and the non-controlling non-controlling When the Group loses control of a subsidiary, the profit or loss on disposal is calculated as the difference between (i) the aggregate of the fair value of the consideration received and the fair value of any investment retained and (ii) the previous carrying amount of the assets (including goodwill), and liabilities of the subsidiary and any non-controlling Subsidiaries included in the consolidated financial statements: Percentage of Ownership (%) December 31, Name of investor Name of investee Main businesses Location 2016 2017 Note The Company ChipMOS U.S.A., Inc. (“ChipMOS USA”) Research, development and marketing of semiconductors, circuits, and electronic related products San Jose, USA 100 100 The Company ChipMOS BVI Holding company British Virgin Islands 100 100 ChipMOS BVI ChipMOS Shanghai Semiconductor assembling and testing services People’s Republic of China (“PRC”) 100 — * * On November 30, 2016, the Company’s Board of Directors approved ChipMOS BVI’s disposal of 54.98% shareholding of its subsidiary, ChipMOS Shanghai. The transaction was completed in March 2017, thereafter, ChipMOS Shanghai was excluded from the consolidated financial statements and recorded as “Investment in associates”. Detailed information is provided in Note 13. e) Significant judgments and estimates The preparation of consolidated financial statements requires management to make judgments, estimates and assumptions that affect the recorded amounts of assets, liabilities, revenue and expenses of the Group. The Group continually evaluates these estimates, including those related to share-based payments, impairment of receivables, impairment of non-financial The estimates and underlying assumptions are reviewed on an ongoing basis. Revisions to accounting estimates are recognized in the period in which the estimate is revised if the revision affects only that periods, or in the period of the revision and future periods if the revision affects both current and future periods. Management has considered the development, selection and disclosure of the Group’s critical accounting policies and estimates. Judgments In the process of applying the Group’s accounting policies, management has made the following judgments which have the most significant effect on the amounts recognized in the consolidated financial statements: Provisions deficiency compensation The Group is primarily providing high-integration and high-precision integrated circuit of the packaging and testing services. In cases of deficiencies in the assembly and testing services provided, the Group has to clarify the reason for deficiencies and attribution of responsibility. The Group follows the guidance of IAS 37 “Provisions, Contingent Liabilities and Contingent Assets” to determine provisions for deficiency compensation. Since the timing and amount of these provisions are based on assumptions and estimates it requires management to make critical judgments. Estimates and assumptions Revenue recognition The Group estimates sales discounts and returns based on historical results and other known factors. Provisions for such liabilities are recorded as a deduction item to sales revenues when the sales are recognized. The Group reassesses the reasonableness of estimates of discounts and returns periodically. Causes and effects of accounting change By considering the Group’s experience on using similar property, plant and equipment in prior periods as well as by referring to the experience from peer industry, on November 10, 2016, the Board of Directors approved to change the estimated useful lives of certain properties from 11 years to 16 years and certain equipment from 2~6 years to 2~8 years effectively from November 1, 2016, in order to better reflect economic benefits from usage of those properties and equipment. The impact on depreciation expenses of current and future periods were expected as follows: 2016 2017 2018 2019 NT$000 NT$000 NT$000 NT$000 Decrease in depreciation expenses (119,737 ) (605,259 ) (389,972 ) (164,824 ) f) Property, plant and equipment and depreciation Property, plant and equipment are stated at cost, less provision for depreciation and impairment losses, if any. The cost of an item of property, plant and equipment comprises its purchase price and any directly attributable cost of bringing the asset to its working condition and location for its intended use. Expenditure incurred after the item has been put into operation, such as repairs and maintenance and overhaul costs, is normally charged to the consolidated statements of comprehensive income in the year in which it is incurred. In situations where it can be clearly demonstrated that the expenditure has resulted in an increase in future economic benefits expected to be obtained from the use of the item, the expenditure is capitalized as an additional cost of the item. When an item of property, plant and equipment is disposed of or retired, its cost and accumulated depreciation are removed from the financial statements and any gain or loss resulting from the disposal or retirement, being the difference between the net proceeds and the carrying amount of the asset, is included in consolidated statements of comprehensive income. Depreciation is provided on the straight-line method, based on the estimated useful life of the individual assets, as follows: Buildings 6 to 51 years Machinery and equipment 2 to 8 years Tools 2 to 3 years Other equipment 2 to 6 years Where parts of an item of property, plant and equipment have different useful lives, the cost of that item is allocated on a reasonable basis among the parts and each part is depreciated separately. Residual values, useful lives and the depreciation method are reviewed, and adjusted if appropriate, at least at each financial year end. An item of property, plant and equipment including any significant part initially recognized is derecognized upon disposal or when no future economic benefits are expected from its use or disposal. Any gain or loss on disposal or retirement recognized in the consolidated statements of comprehensive income in the year the asset is derecognized is the difference between the net sales proceeds and the carrying amount of the relevant asset. g) Impairment of non-financial Where an indication of impairment exists, or when periodical impairment testing for an asset is required (other than inventories, deferred tax assets and financial assets), the recoverable amount of the asset is estimated. An asset’s recoverable amount is the higher of the value in use of the asset or cash-generating unit to which it belongs and its fair value less costs to sell, and is determined for an individual asset, unless the asset does not generate cash inflows that are largely independent of those from other assets or groups of assets, in which case the recoverable amount is determined for the cash-generating unit to which the asset belongs. An impairment loss is recognized only if the carrying amount of an asset exceeds its recoverable amount. In assessing value in use, the estimated future cash flows are discounted to their present value using a pre-tax An assessment is made at the end of each reporting period as to whether there is any indication that previously recognized impairment losses may no longer exist or may have decreased. If such indication exists, the recoverable amount is estimated. A previously recognized impairment loss of an asset is reversed only if there has been a change in the estimates used to determine the recoverable amount of that asset, but not to an amount higher than the carrying amount that would have been determined (net of any depreciation), had no impairment loss been recognized for the asset in prior years. A reversal of such impairment loss is credited to the consolidated statements of comprehensive income in the period in which it arises. h) Inventories Inventories are stated at the lower of cost and net realizable value. Cost is determined on a weighted average cost basis and includes all costs of purchase, costs of conversion, and other costs incurred in bringing the inventories to their present location and condition. Net realizable value is the estimated selling price in the ordinary course of business less the estimated costs of completion and the estimated costs necessary to make the sale. When inventories are consumed, the carrying amount of those inventories is recognized as cost of revenue in the period in which the related revenue is recognized. The amount of any write-down of inventories to net realizable value and all losses of inventories are recognized as cost of revenue in the period the write-down or loss occurs. The amount of any reversal of any write-down of inventories is recognized as a reduction in the amount of inventories recognized as cost of revenue in the period in which the reversal occurs. i) Non-current Non-current j) Investments and other financial assets Initial recognition and measurement The Group’s financial assets are classified, at initial recognition, into financial assets at fair value through profit or loss (“FVTPL”), loans and receivables and available-for-sale All regular way purchases or sales of financial assets are recognized on the settlement date, that is, the date that the Group completes the purchase or sell of the asset. Regular way purchases or sales are purchases or sales of financial assets that require delivery of assets within the time frame established by regulation or convention in the marketplace. Effective interest method The effective interest method is a method of calculating the amortized cost of loans and receivables and a debt instrument and of allocating interest income over the relevant period. The effective interest rate is the rate that exactly discounts estimated future cash receipts (including all fees on points paid or received that form an integral part of the effective interest rate, transaction costs and other premiums or discounts) through the expected life of the debt instrument, or, where appropriate, a shorter period. Income is recognized on an effective interest basis for debt instruments. Subsequent measurement The subsequent measurement of financial assets depends on their classification as follows: Financial assets at fair value through profit or loss Financial assets at FVTPL include financial assets held for trading and those designated as at FVTPL upon initial recognition. A financial asset is classified as held for trading, mainly for cash management purpose as part of operating activities, if it has been acquired principally for the purpose of selling in the near future; or it is a part of an identified portfolio of financial instruments that the Group manages together and has a recent actual pattern of short-term profit-taking; or it is a derivative that is not designated and effective as a hedging instrument. A financial asset other than a financial asset held for trading may be designated as at FVTPL upon initial recognition if: • such designation eliminates or significantly reduces a measurement or recognition inconsistency that would otherwise arise; or • the financial asset forms part of a group of financial assets or financial liabilities or both, which is managed and its performance is evaluated on fair value basis, in accordance with the Group’s documented risk management or investment strategy, and information about the grouping is provided internally on that basis; or • it forms part of a contract containing one or more embedded derivatives, and IAS 39 “Financial Instruments: Recognition and Measurement” permits the entire combined contract (asset or liability) to be designated as at FVTPL. There were no financial assets at FVTPL at the end of the reporting periods. Loans and receivables Loans and receivables are non-derivative Available-for-sale Available-for-sale non-derivative When the fair value of unlisted equity investments cannot be reliably measured because (a) the variability in the range of reasonable fair value estimates is significant for that investment or (b) the probabilities of the various estimates within the range cannot be reasonably assessed and used in estimating fair value, such investments are stated at cost less any impairment losses. The Group evaluates whether the ability and intention to sell its available-for-sale k) Impairment of financial assets The Group assesses at the end of each reporting period whether there is objective evidence that a financial asset or a group of financial assets is impaired. An impairment exists if one or more events that occurred after the initial recognition of the asset have an impact on the estimated future cash flows of the financial asset or the group of financial assets that can be reliably estimated. Evidence of impairment may include indications that a debtor or a group of debtors is experiencing significant financial difficulty, default or delinquency in interest or principal payments, the probability that they will enter bankruptcy or other financial reorganization and observable data indicating that there is a measurable decrease in the estimated future cash flows, such as changes in arrears or economic conditions that correlate with defaults. Financial assets carried at amortized cost For financial assets carried at amortized cost, the Group first assesses whether impairment exists individually for financial assets that are individually significant, or collectively for financial assets that are not individually significant. If the Group determines that no objective evidence of impairment exists for an individually assessed financial asset, whether significant or not, it includes the asset in a group of financial assets with similar credit risk characteristics and collectively assesses them for impairment. Assets that are individually assessed for impairment and for which an impairment loss is, or continues to be, recognized are not included in a collective assessment of impairment. The amount of any impairment loss identified is measured as the difference between the asset’s carrying amount and the present value of estimated future cash flows (excluding future credit losses that have not yet been incurred). The present value of the estimated future cash flows is discounted at the financial asset’s original effective interest rate (i.e., the effective interest rate computed at initial recognition). The carrying amount of the asset is reduced through the use of an allowance account and the loss is recognized in the consolidated statements of comprehensive income. Interest income continues to be accrued on the reduced carrying amount and is accrued using the rate of interest used to discount the future cash flows for the purpose of measuring the impairment loss. Loans and receivables together with any associated allowance are written off when there is no realistic prospect of future recovery and all collateral has been realized or has been transferred to the Group. If, in a subsequent period, the amount of the estimated impairment loss increases or decreases because of an event occurring after the impairment was recognized, the previously recognized impairment loss is increased or reduced by adjusting the allowance account. If a write-off Available-for-sale The amount of the impairment loss is measured as the difference between the asset’s acquisition cost (less any principal repayment and amortization) and current fair value, less any impairment loss on that financial asset previously recognized in profit or loss, and is reclassified from “other comprehensive income” to “profit or loss”. If, in a subsequent period, the fair value of an investment in a debt instrument increases, and the increase can be related objectively to an event occurring after the impairment loss was recognized, then such impairment loss is reversed through profit or loss. Impairment loss of an investment in an equity instrument recognized in profit or loss shall not be reversed through profit or loss. Impairment loss is recognized and reversed by adjusting the carrying amount of the asset directly. l) Derecognition of financial assets A financial asset (or, where applicable, a part of a financial asset or part of a group of similar financial assets) is primarily derecognized (i.e., removed from the Group’s consolidated statement of financial position) when: • the rights to receive cash flows from the asset have expired; or • the Group has transferred its rights to receive cash flows from the asset or has assumed an obligation to pay the received cash flows in full without material delay to a third party under a “pass-through” arrangement; and either (a) the Group has transferred substantially all the risks and rewards of the asset, or (b) the Group has neither transferred nor retained substantially all the risks and rewards of the asset, but has transferred control of the asset. When the Group has transferred its rights to receive cash flows from an asset or has entered into a pass-through arrangement, it evaluates if and to what extent it has retained the risk and rewards of ownership of the asset. When it has neither transferred nor retained substantially all the risks and rewards of the asset nor transferred control of the asset, the Group continues to recognize the transferred asset to the extent of the Group’s continuing involvement. In that case, the Group also recognizes an associated liability. The transferred asset and the associated liability are measured on a basis that reflects the rights and obligations that the Group has retained. Continuing involvement that takes the form of a guarantee over the transferred asset is measured at the lower of the original carrying amount of the asset and the maximum amount of consideration that the Group could be required to repay. m) Investments in associates The Group’s investments in associates are accounted for using the equity method. An associate is an entity over which the Group has significant influence and that is neither a subsidiary nor a joint venture. Significant influence is the power to participate in the financial and operating policy decisions of an entity, but is not control or joint control over those policies. Any difference between the acquisition cost and the Group’s share of the net fair value of the identifiable assets and liabilities of associates is accounted for as follows: (a) Any excess of the acquisition cost over the Group’s share of the net fair value of the identifiable assets and liabilities of an associate at the date of acquisition is recognized as goodwill and is included in the carrying amount of the investment. Amortization of goodwill is not permitted. (b) Any excess of the Group’s share of the net fair value of the identifiable assets and liabilities of an associate over the acquisition cost, after reassessing the fair value, is recognized as a gain in profit or loss on the acquisition date. Under the equity method, the investments in associates are carried on the statements of financial position at cost plus post acquisition changes in the Group’s share of profit or loss and other comprehensive income of associates. The Group’s share of changes in associates’ profit or loss and other comprehensive income are recognized directly in profit or loss and other comprehensive income, respectively, of the Group. Distributions received from an associate reduce the carrying amount of the investment. Any unrealized gains and losses resulting from transactions between the Group and the associate are eliminated to the extent of the Group’s interest in the associate. Upon an associate’s issuance of new shares, if the Group takes up more shares than its original proportionate holding while maintaining its significant influence over that associate, such increase would be accounted for as an acquisition of an additional equity interest in the associate. Upon an associate’s issuance of new shares, if the Group does not take up proportionate shares and reduces its shareholding while maintaining its significant influence over that associate, the Group will treat the transaction as deemed disposal and reclassify to profit or loss the proportion of the gain or loss previously recognized in other comprehensive income relating to that reduction in ownership interest where appropriate. The Group ceases to use the equity method upon loss of significant influence over an associate. Any difference between the carrying amount of the investment in an associate upon loss of significant influence and the fair value of the retained investment plus proceeds from disposal will be recognized in profit or loss. The Group determines at each reporting date whether there is any objective evidence that the investments in associates are impaired. An impairment loss, being the difference between the recoverable amount of the associate and its carrying value, is recognized in profit or loss in the consolidated statements of comprehensive income and forms part of the carrying amount of the investments. n) Financial liabilities Initial recognition and measurement Financial liabilities are classified, at initial recognition, as financial liabilities at fair value through profit or loss, loans and borrowings, or as derivatives designated as hedging instruments in an effective hedge, as appropriate. All financial liabilities are recognized initially at fair value and, in the case of loans and borrowings, net of directly attributable transaction costs. The Group’s financial liabilities include bank loans, accounts payable and other monetary liabilities. Subsequent measurement The subsequent measurement of financial liabilities depends on their classification as follows: Loans and borrowings After initial recognition, interest-bearing loans and borrowings are subsequently measured at amortized cost, using the effective interest rate method unless the effect of discounting would be immaterial, in which case they are stated at cost. Gains and losses are recognized in the consolidated statements of comprehensive income when the liabilities are derecognized through the effective interest rate amortization process. Amortized cost is calculated by taking into account any discount or premium on acquisition and fees or costs that are an integral part of the effective interest rate. The effective interest rate amortization is included in finance costs in the consolidated statements of comprehensive income. Notes and accounts payable Notes and accounts payable are obligations to pay for goods or services that have been acquired in the ordinary course of business from suppliers. They are recognized initially at fair value and subsequently measured at amortized cost using the effective interest method. However, short-term accounts payable without bearing interest are subsequently measured at initial invoice amount as the effect of discounting is immaterial. o) Derecognition of financial liabilities A financial liability is derecognized when the obligation under the liability is discharged or cancelled, or expired. When an existing financial liability is replaced by another from the same lender on substantially different terms, or the terms of an existing liability are substantially modified, such an exchange or modification is treated as a derecognition of the original liability and a recognition of a new liability, and the difference between the respective carrying amounts is recognized in the consolidated statements of comprehensive income. p) Dividends Dividends are recommended by the Board of Directors to the Shareholders’ approval pursuant to the Company’s Article of Incorporation. q) Operating lease charges Where the Group has the use of assets held under operating leases, payments made under the leases are charged to the consolidated statements of comprehensive income in equal installments over the accounting periods covered by the lease term, except where an alternative basis is more representative of the pattern of benefits to be derived from the leased assets. Lease incentives received are recognized in the consolidated statements of comprehensive income as an integral part of the aggregate net lease payments made. Contingent rentals, if any, are charged to the consolidated statements of comprehensive income in the accounting period in which they are incurred. r) Treasury stock Treasury stock is stated at cost and shown as a deduction in equity. When the Company retires treasury stock, the treasury stock account is reduced and the share capital as well as the capital surplus – share premium are reversed on a pro rata basis. When the book value of the treasury stock exceeds the sum of par value and share premium, the difference is charged to respective capital surplus and to retained earnings for any remaining amount. The Company’s stock held by its subsidiary is treated as treasury stock. s) Provisions A provision is recognized when a present obligation (legal or constructive) has arisen as a result of a past event and it is probable that a future outflow of resources will be required to settle the obligation, provided that a reliable estimate can be made of the amount of the obligation. When the effect of discounting is material, the amount recognized for a provision is the present value at the end of the reporting period of the future expenditures expected to be required to settle the obligation. The increase in the discounted present value amount arising from the passage of time is included in finance costs in the consolidated statements of comprehensive income. t) Foreign currency translation The consolidated financial statements are presented in New Taiwan dollars, which is the Company’s functional currency. Each entity in the Group determines its own functional currency and items included in the financial statements of each entity are measured using that functional currency. Foreign currency transactions are initially recorded using the functional currency rates ruling at the date of the transactions. Monetary assets and liabilities denominated in foreign currencies are retranslated at the functional currency rates of exchange ruling at the end of the reporting period. All differences are taken to profit or loss. Non-monetary Non-monetary The resulting exchange differences are r |
Translation into U.S. dollar am
Translation into U.S. dollar amounts | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Translation into U.S. dollar amounts | 3. Translation into U.S. dollar amounts The Company maintains its accounts and expresses its consolidated financial statements in New Taiwan dollars. For convenience purposes, U.S. dollar amounts presented in the accompanying consolidated financial statements have been translated from New Taiwan dollars to U.S. dollars at the noon buying rate in the City of New York for cable transfers as certified for customs purposes by the Federal Reserve Bank of New York as of December 29, 2017, which was NT$29.64 to US$1.00. These convenience translations should not be construed as representations that the New Taiwan dollar amounts have been, or could in the future be, converted into U.S. dollars at this or any other rate of exchange. |
Segment Information
Segment Information | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Segment Information | 4. Segment Information The Group engages mainly in the assembly and testing of semiconductors, memory module and investing. In accordance with IFRS 8 “Operating Segments”, the Group’s chief operating decision maker has been identified as the Chairman of the Board of Directors, who reviews these segment results by Testing, Assembly, Testing and Assembly for Liquid Crystal Display and other Flat-Panel Display Driver Semiconductors (“LCDD”) and Bumping when making decisions about allocating resources and assessing the performance of the Group. The information of the segments’ other assets and liabilities are not regularly provided to the Chairman of the Board of Directors for decision making. Financial segment information is as below: The Group uses operating profit (loss) as the measurement for segment profit (loss) and the basis of performance assessment. There was no material inconsistency between the accounting policies of the operating segment and the accounting policies described in Note 2. 2015 Testing Assembly LCDD Bumping Others Elimination Total Discontinued NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 Revenue External customers 4,546,394 5,525,582 5,396,001 3,369,112 — — 18,837,089 1,032,302 Inter-segment 172,264 528 — — 44,577 (217,369 ) — — Total revenue 4,718,658 5,526,110 5,396,001 3,369,112 44,577 (217,369 ) 18,837,089 1,032,302 Operating profit (loss) 1,203,169 117,127 1,354,398 28,605 (47,191 ) (7,681 ) 2,648,427 (61,214 ) Depreciation and amortization (646,545 ) (550,819 ) (1,157,809 ) (548,234 ) (357 ) 543 (2,903,221 ) (118,702 ) Interest income — — — — 60,552 (1,690 ) 58,862 9,421 Interest expense — — — — (128,311 ) 1,690 (126,621 ) (414 ) Share of profit of associates — — — — 25,346 5,923 31,269 — Purchase of property, plant and equipment 796,964 895,767 1,366,389 589,615 2,477 (6,652 ) 3,644,560 — 2016 Testing Assembly LCDD Bumping Others Elimination Total Discontinued NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 Revenue External customers 4,587,054 5,880,780 4,920,302 2,999,457 — — 18,387,593 1,005,166 Inter-segment — 1,103 — 510 41,670 (43,283 ) — — Total revenue 4,587,054 5,881,883 4,920,302 2,999,967 41,670 (43,283 ) 18,387,593 1,005,166 Operating profit (loss) 1,346,874 143,220 963,698 (341,356 ) (82,331 ) (31,530 ) 1,998,575 (146,263 ) Depreciation and amortization (664,026 ) (635,481 ) (1,167,908 ) (622,412 ) (565 ) 488 (3,089,904 ) (141,375 ) Interest income — — — — 51,756 (13,202 ) 38,554 3,753 Interest expense — — — — (144,545 ) — (144,545 ) (606 ) Share of profit (loss) of associates — — — — (128,866 ) 157,790 28,924 — Purchase of property, plant and equipment 771,500 554,162 910,457 887,144 49 — 3,123,312 1,567,683 2017 Testing Assembly LCDD Bumping Others Elimination Total Total Discontinued Discontinued NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 US$000 NT$000 US$000 Revenue External customers 4,838,246 5,259,281 4,789,869 3,053,459 — — 17,940,855 605,292 227,095 7,662 Inter-segment — — 247 — 35,808 (36,055 ) — — — — Total revenue 4,838,246 5,259,281 4,790,116 3,053,459 35,808 (36,055 ) 17,940,855 605,292 227,095 7,662 Operating profit (loss) 1,448,939 (55,198 ) 1,285,495 (336,123 ) (100,545 ) (2,687 ) 2,239,881 75,570 (25,394 ) (857 ) Depreciation and amortization (673,393 ) (597,500 ) (1,048,587 ) (579,605 ) (503 ) 310 (2,899,278 ) (97,816 ) — — Interest income — — — — 53,123 — 53,123 1,792 464 16 Interest expense — — — — (190,425 ) — (190,425 ) (6,425 ) (2,414 ) (81 ) Share of profit (loss) of associates — — — — 1,347,851 (1,527,342 ) (179,491 ) (6,056 ) — — Purchase of property, plant and equipment 836,894 655,879 2,615,153 594,765 — — 4,702,691 158,660 — — Geographic information of revenue: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Area ROC 13,529,739 12,728,014 13,152,419 443,739 Japan 986,403 1,855,674 2,257,296 76,157 Singapore 2,928,591 3,087,835 1,798,585 60,681 Others 1,392,356 716,070 732,555 24,715 18,837,089 18,387,593 17,940,855 605,292 Net revenue from customers representing at least 10% of the total revenue: 2015 2016 2017 2017 Amount % Amount % Amount % Amount NT$000 NT$000 NT$000 US$000 Customers Customer A 4,307,855 23 3,370,285 18 3,434,873 19 115,886 Customer K 2,386,975 13 2,633,431 14 2,742,882 15 92,540 Customer I 2,935,820 16 3,085,190 17 1,798,111 10 60,665 Customer C 1,761,049 9 1,870,675 10 1,530,209 9 51,626 The revenue generated from the above customers is mainly from the segments of Assembly and LCDD. |
Operating costs and expenses
Operating costs and expenses | 12 Months Ended |
Dec. 31, 2017 | |
Analysis of income and expense [abstract] | |
Operating costs and expenses | 5. Operating costs and expenses 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Change of finished goods and work in process 7,899 (19,498 ) 31,977 1,079 Consumption of raw materials and supplies 3,271,581 3,346,540 3,036,350 102,441 Employee benefit expenses 5,358,962 5,317,125 5,895,778 198,913 Depreciation and amortization 2,903,221 3,089,904 2,899,278 97,816 Other expenses 4,752,050 4,745,253 4,530,425 152,848 Total operating costs and expenses 16,293,713 16,479,324 16,393,808 553,097 Employee benefit expenses Salaries 4,300,550 4,126,203 4,874,709 164,464 Labor and health insurance 355,331 351,232 390,788 13,184 Pension 179,665 183,293 198,502 6,697 Share-based payments 207,242 356,463 123,021 4,151 Other personnel expenses 316,174 299,934 308,758 10,417 5,358,962 5,317,125 5,895,778 198,913 |
Other operating income (expense
Other operating income (expenses), net | 12 Months Ended |
Dec. 31, 2017 | |
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Other operating income (expenses), net | 6. Other operating income (expenses), net 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Gain on disposal of property, plant and equipment, net 1,562 2,575 132,777 4,480 Impairment on property, plant and equipment (1,460 ) (8,198 ) (956 ) (32 ) Gain on disposal of scrapped materials 31,870 30,476 27,940 943 Gain on disposal of items purchased on behalf of others 22,893 48,812 26,417 891 Royalty income — — 11,998 405 Insurance compensation income — 7,033 486,858 16,426 Others 50,186 9,608 7,800 262 105,051 90,306 692,834 23,375 |
Finance costs
Finance costs | 12 Months Ended |
Dec. 31, 2017 | |
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Finance costs | 7. Finance costs 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Interest on bank loans 146,003 157,254 208,486 7,034 Interest on lease payable — 212 708 24 Less: Amounts capitalized in qualifying assets (19,382 ) (12,921 ) (18,769 ) (633 ) 126,621 144,545 190,425 6,425 Finance expense 15,890 34,571 26,858 906 142,511 179,116 217,283 7,331 |
Other non-operating income (exp
Other non-operating income (expenses), net | 12 Months Ended |
Dec. 31, 2017 | |
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Other non-operating income (expenses), net | 8. Other non-operating 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Interest income 58,862 38,554 53,123 1,792 Foreign exchange gains (losses), net 241,983 (195,326 ) (418,970 ) (14,135 ) Impairment of available-for-sale (8,584 ) — — — Gain on disposal of financial assets at fair value through profit or loss 11,483 621 637 22 Gain on disposal of long-term investment in associates — — 16,929 571 Share of profit (loss) of associates 31,269 28,924 (179,491 ) (6,056 ) Reimbursement of ADSs service charge — — 23,707 800 Others 5,127 8,203 13,883 468 340,140 (119,024 ) (490,182 ) (16,538 ) |
Income tax expense
Income tax expense | 12 Months Ended |
Dec. 31, 2017 | |
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Income tax expense | 9. Income tax expense Income tax expense arising in other jurisdictions is calculated at the rates prevailing in the relevant jurisdictions, based on existing legislation, interpretations and practices in respect thereof. The statutory tax rates for the years ended December 31, 2015, 2016 and 2017 for ChipMOS Taiwan and ChipMOS Shanghai were 17% and 25%, respectively. The statutory tax rate for the year ended December 31, 2015 for ThaiLin was 17%. a) The major components of income tax expense for the years ended December 31, 2015, 2016 and 2017 are: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Current income tax: Current income tax on profits for the period 720,461 331,144 125,376 4,230 Income tax (benefit) on unappropriated retained earnings 198,157 (174,930 ) 246,684 8,322 Prior year income tax (over) under estimation (1,732 ) 4,527 67,885 2,290 Total current income tax 916,886 160,741 439,945 14,842 Deferred income tax: Relating to origination and reversal of temporary differences 18,969 16,379 110,542 3,730 Total deferred income tax 18,969 16,379 110,542 3,730 Income tax expense reported in the consolidated statements of comprehensive income 935,855 177,120 550,487 18,572 Unappropriated retained earnings decreased by NT$5,052,343 thousand due to the capital reorganization, and accordingly the Company did not recognize an additional 10% tax on respective unappropriated retained earnings for the year 2015. Information about the capital reorganization for the year ended December 31, 2016 is provided in Note 29. Deferred tax charged to other comprehensive income: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Remeasurement of defined benefit obligations (7,099 ) (7,375 ) 8,642 292 b) Reconciliation of income tax expense and the accounting profit before income tax: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Tax calculated based on profit before tax and statutory tax rate 462,692 214,550 566,649 19,118 Expenses disallowed (added) by tax regulations 5,692 (2,190 ) 10,185 344 Temporary difference not recognized as deferred tax assets 6,522 1,306 (85,168 ) (2,873 ) Tax exempted (income) expenses by tax regulation (13,483 ) 12,057 (256,788 ) (8,664 ) Taxable loss not recognized as deferred tax assets 25,737 54,012 — — Effect of different tax rates in countries in which the Group operates 3,100 10,451 1,040 35 Withholding tax 249,170 57,337 — — Prior year income tax (over) under estimation (1,732 ) 4,527 67,885 2,290 Income tax (benefit) on unappropriated retained earnings 198,157 (174,930 ) 246,684 8,322 Income tax expense reported in the consolidated statements of comprehensive income 935,855 177,120 550,487 18,572 c) The details of deferred tax assets (liabilities) are as follows: January 1, Profit and Other December 31, December 31, NT$000 NT$000 NT$000 NT$000 US$000 Year of 2016 Deferred tax assets Unrealized exchange losses (5,843 ) 5,843 — — Inventories 14,823 11,501 — 26,324 Property, plant and equipment 3,672 77,197 — 80,869 Deferred income 50,423 (9,129 ) — 41,294 Provisions 16,473 (5,241 ) — 11,232 Net defined benefit liability, non-current 86,719 (4,007 ) 7,375 90,087 Deferred tax assets 166,267 76,164 7,375 249,806 Deferred tax liabilities Unrealized exchange gains — (14,155 ) — (14,155 ) Property, plant and equipment — (78,388 ) — (78,388 ) Deferred tax liabilities — (92,543 ) — (92,543 ) Year of 2017 Deferred tax assets Unrealized exchange losses — 8,167 — 8,167 276 Inventories 26,324 (17,192 ) — 9,132 308 Property, plant and equipment 80,869 (25,375 ) — 55,494 1,872 Deferred income 41,294 (1,809 ) — 39,485 1,332 Provisions 11,232 10,411 — 21,643 730 Net defined benefit liability, non-current 90,087 (2,994 ) (8,642 ) 78,451 2,647 Deferred tax assets 249,806 (28,792 ) (8,642 ) 212,372 7,165 Deferred tax liabilities Unrealized exchange gains (14,155 ) 14,155 — — — Property, plant and equipment (78,388 ) (95,905 ) — (174,293 ) (5,880 ) Deferred tax liabilities (92,543 ) (81,750 ) — (174,293 ) (5,880 ) d) The Company has not recognized deductible and taxable temporary differences associated with investments as deferred tax assets and liabilities. As of December 31, 2017, the amounts of deductible and taxable temporary differences unrecognized as deferred tax assets and liabilities were NT$28,584 thousand (US$964 thousand) and NT$920,943 thousand (US$31,071 thousand), respectively. As of December 31, 2016, the amount of deductible temporary differences unrecognized as deferred tax assets was NT$534,568 thousand. e) The Company’s income tax returns through 2015 have been assessed and approved by the Tax Authority. f) The Company’s unappropriated retained earnings were all generated in and after 1998. g) The balance of the imputation tax credit account was NT$1,192,119 thousand as of December 31, 2016 and the creditable tax rate was 20.48%. With the abolishment of the imputation tax system under the amendments to the Income Tax Act promulgated in February 2018, the information on the balance of the imputation tax credit account as of December 31, 2017, is no longer disclosed. Please refer to Note 37. |
Earnings per share ("EPS")
Earnings per share ("EPS") | 12 Months Ended |
Dec. 31, 2017 | |
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Earnings per share ("EPS") | 10. Earnings per share (“EPS”) Basic EPS amounts are calculated by dividing the profit for the year attributable to equity holders of the Company by the weighted average number of ordinary shares outstanding during the year. Diluted EPS amounts are calculated by dividing the profit attributable to equity holders of the Company by the weighted average number of ordinary shares outstanding during the year plus the weighted average number of ordinary shares that would be issued on conversion of all the dilutive potential ordinary shares into ordinary shares. The following reflects the income and share data used in the basic and diluted EPS computations: 2015 Amount after income Weighted average Earnings per share Basic earnings per share NT$000 in thousands NT$ Profit (loss) attributable to: Equity holders of the Company - Continuing operations 2,164,557 2.47 - Discontinued operations (34,233 ) (0.04 ) Equity holders of the Company 2,130,324 2.43 Predecessors’ interests (291,429 ) (0.33 ) 1,838,895 877,402 2.10 Diluted earnings per share Employees’ bonuses 10,867 Restricted shares 27 Profit (loss) attributable to: Equity holders of the Company - Continuing operations 2,164,557 2.44 - Discontinued operations (34,233 ) (0.04 ) Equity holders of the Company 2,130,324 2.40 Predecessors’ interests (291,429 ) (0.33 ) 1,838,895 888,296 2.07 2016 Amount after income Weighted average Earnings per share Basic earnings per share NT$000 In thousands NT$ Profit (loss) attributable to: Equity holders of the Company - Continuing operations 1,829,327 2.13 - Discontinued operations (122,105 ) (0.14 ) Equity holders of the Company 1,707,222 1.99 Predecessors’ interests (306,012 ) (0.35 ) 1,401,210 859,644 1.64 Diluted earnings per share Employees’ bonuses 3,035 Restricted shares 4,122 Profit (loss) attributable to: Equity holders of the Company - Continuing operations 1,829,327 2.11 - Discontinued operations (122,105 ) (0.14 ) Equity holders of the Company 1,707,222 1.97 Predecessors’ interests (306,012 ) (0.35 ) 1,401,210 866,801 1.62 2017 Amount after income Weighted average Earnings per share Earnings per share Basic earnings per share NT$000 In thousands NT$ US$ Profit attributable to: Equity holders of the Company - Continuing operations 981,929 1.16 0.04 - Discontinued operations 1,814,953 2.14 0.07 2,796,882 846,686 3.30 0.11 Diluted earnings per share Employees’ bonuses 14,034 Restricted shares 5,075 Profit attributable to: Equity holders of the Company - Continuing operations 981,929 1.13 0.04 - Discontinued operations 1,814,953 2.10 0.07 2,796,882 865,795 3.23 0.11 * The weighted average number of shares takes into account the weighted average effect of changes in treasury stock transaction during the year. |
Dividend
Dividend | 12 Months Ended |
Dec. 31, 2017 | |
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Dividend | 11. Dividend A dividend of NT$2.09 per share was approved by the shareholders of the Company on May 31, 2016. The dividend of NT$1,792,553 thousand was fully paid on December 19, 2016 to all ordinary shareholders of record at the close of business on December 3, 2016. A distribution of NT$1.00 per share (including cash distribution from capital surplus of NT$0.70 per share) was approved by the shareholders of the Company on May 26, 2017. The distribution of NT$856,754 thousand (US$28,906 thousand) was fully paid on July 12, 2017 to all ordinary shareholders of record at the close of business on June 19, 2017. |
Available-for-sale financial as
Available-for-sale financial assets | 12 Months Ended |
Dec. 31, 2017 | |
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Available-for-sale financial assets | 12. Available-for-sale December 31, December 31, December 31, NT$000 NT$000 US$000 Unlisted equity investments, at cost 79,880 49,474 1,669 Less: Allowance for impairment losses (69,920 ) (28,584 ) (964 ) 9,960 20,890 705 Due to the operation loss and accumulated deficit of VIGOUR TECHNOLOGY Corporation (“VIGOUR”), the Company has recognized full impairment loss of its investments on VIGOUR amounted to NT$41,336 thousand (US$1,395 thousand) in prior years. Based on the Company’s assessment, considering VIGOUR is currently in liquidation process and no residual assets are expected to be available for distributions, the carrying amount of investments and accumulated impairment losses were reclassified to “Other receivables” in the fourth quarter of 2017. As of December 31, 2016 and 2017, no available-for-sale |
Investment in associates
Investment in associates | 12 Months Ended |
Dec. 31, 2017 | |
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Investment in associates | 13. Investment in associates Details of investment in associates are as follows: Country of Measurement December 31, 2016 December 31, 2017 Investee company Carrying Ownership Carrying amount Ownership NT$000 % NT$000 US$000 % JMC ELECTRONICS CO., LTD. (“JMC”) Kaohsiung Equity 369,329 21.22 373,276 12,593 19.10 ChipMOS Shanghai Shanghai PRC Equity — — 3,060,056 103,241 45.02 In January 2017, the Company did not participate in the capital increase of JMC, which reduced the Company’s shareholding from 21.22% to 19.10%. Given that the Company still retains significant influence by holding two seats in JMC’s Board of Directors, JMC was still recognized as “Investment in associates”. As a result of the change in shareholding, the Company recognized disposal gain from long-term investment amounted to NT$16,929 thousand (US$571 thousand) for the year ended December 31, 2017. On November 30, 2016, the Company’s Board of Directors adopted a resolution to authorize its subsidiary, ChipMOS BVI, to dispose 54.98% of ChipMOS Shanghai’s equity. The equity transfer was completed in March 2017, and subsequently, due to the loss of control but retention of significant influence, ChipMOS Shanghai was excluded from the consolidated financial statements and was accounted for as an investment in associate. Information is provided in Note 18. In June 2017, ChipMOS BVI participated in ChipMOS Shanghai’s increase of paid-in For the years ended December 31, 2016 and 2017, the Company recognized its share of profit of investments in associates amounted to NT$28,924 thousand and share of loss of NT$179,491 thousand (US$6,056 thousand), respectively. The tables below provide summarized financial information for the investment in associates that are material to the Group. Statements of financial position JMC December 31, 2016 December 31, 2017 December 31, 2017 NT$000 NT$000 US$000 Current assets 904,571 833,914 28,134 Non-current 876,314 1,161,620 39,191 Current liabilities (258,513 ) (284,580 ) (9,601 ) Non-current (2,491 ) (1,756 ) (59 ) Total net assets 1,519,881 1,709,198 57,665 Group’s share 322,509 326,456 11,014 Goodwill 46,820 46,820 1,579 Carrying amount 369,329 373,276 12,593 Statements of financial position ChipMOS Shanghai December 31, 2017 December 31, 2017 NT$000 US$000 Current assets 3,380,641 114,056 Non-current 2,766,839 93,348 Current liabilities (460,054 ) (15,521 ) Non-current (489,097 ) (16,501 ) Total net assets 5,198,329 175,382 Group’s share 2,340,506 78,965 Depreciable assets 703,536 23,736 Goodwill 22,118 746 Inter-company transactions and amortization (6,104 ) (206 ) Carrying amount 3,060,056 103,241 Statements of comprehensive income JMC Year ended December 31, 2016 2017 2017 NT$000 NT$000 US$000 Revenue 1,667,761 1,322,928 44,633 Profit for the year from continuing operations 136,303 4,414 149 Other comprehensive income, net of income tax (627 ) 2,903 98 Total comprehensive income 135,676 7,317 247 Dividend received from the associate 5,730 14,325 483 ChipMOS Shanghai Year ended December 31, 2017 2017 NT$000 US$000 Revenue 1,141,415 38,509 Loss for the year from continuing operations (348,472 ) (11,757 ) Other comprehensive income, net of income tax — — Total comprehensive income (348,472 ) (11,757 ) Dividend received from the associate — — According to IFRS 5 “Non-current |
Property, plant and equipment,
Property, plant and equipment, net | 12 Months Ended |
Dec. 31, 2017 | |
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Property, plant and equipment, net | 14. Property, plant and equipment, net Land Buildings Machinery Tools Other Construction in Total Total NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 US$000 January 1, 2016 Cost 452,738 10,700,236 45,945,380 3,673,636 3,047,001 826,103 64,645,094 Accumulated depreciation and impairment — (5,863,556 ) (38,602,675 ) (3,323,862 ) (2,643,441 ) — (50,433,534 ) 452,738 4,836,680 7,342,705 349,774 403,560 826,103 14,211,560 January 1, 2016 452,738 4,836,680 7,342,705 349,774 403,560 826,103 14,211,560 Additions — 255,916 934,913 358,413 351,850 2,789,903 4,690,995 Disposals — (51 ) (8,624 ) — (351 ) — (9,026 ) Reclassifications — 372,448 1,509,798 22,882 37,373 (1,942,501 ) — Depreciation expenses — (631,233 ) (2,188,976 ) (201,755 ) (206,477 ) — (3,228,441 ) Impairment losses — — — — (8,198 ) — (8,198 ) Exchange adjustments — (45,814 ) (18,196 ) (4,871 ) (11,134 ) (45,689 ) (125,704 ) December 31, 2016 452,738 4,787,946 7,571,620 524,443 566,623 1,627,816 15,531,186 December 31, 2016 Cost 452,738 11,183,278 47,002,228 3,999,894 3,353,413 1,627,816 67,619,367 Accumulated depreciation and impairment — (6,395,332 ) (39,430,608 ) (3,475,451 ) (2,786,790 ) — (52,088,181 ) 452,738 4,787,946 7,571,620 524,443 566,623 1,627,816 15,531,186 Less: Property, plant and equipment classified as held for sale — (710,191 ) (433,688 ) (90,460 ) (168,314 ) (631,315 ) (2,033,968 ) 452,738 4,077,755 7,137,932 433,983 398,309 996,501 13,497,218 January 1, 2017 Cost 452,738 11,183,278 47,002,228 3,999,894 3,353,413 1,627,816 67,619,367 2,281,355 Accumulated depreciation and impairment — (6,395,332 ) (39,430,608 ) (3,475,451 ) (2,786,790 ) — (52,088,181 ) (1,757,361 ) 452,738 4,787,946 7,571,620 524,443 566,623 1,627,816 15,531,186 523,994 Less: Property, plant and equipment classified as held for sale — (710,191 ) (433,688 ) (90,460 ) (168,314 ) (631,315 ) (2,033,968 ) (68,622 ) 452,738 4,077,755 7,137,932 433,983 398,309 996,501 13,497,218 455,372 January 1, 2017 452,738 4,077,755 7,137,932 433,983 398,309 996,501 13,497,218 455,372 Additions — 211,098 2,007,767 571,601 195,957 1,716,268 4,702,691 158,660 Disposals — — (30,066 ) (2,302 ) (1,865 ) — (34,233 ) (1,155 ) Reclassifications — 141,400 1,535,619 44,882 22,149 (1,744,050 ) — — Depreciation expenses — (511,167 ) (1,837,482 ) (357,695 ) (192,934 ) — (2,899,278 ) (97,816 ) Impairment losses — — — — (956 ) — (956 ) (32 ) Exchange adjustments — — (43 ) — (88 ) — (131 ) (5 ) December 31, 2017 452,738 3,919,086 8,813,727 690,469 420,572 968,719 15,265,311 515,024 December 31, 2017 Cost 452,738 9,809,970 45,778,207 4,004,703 2,624,083 968,719 63,638,420 2,147,045 Accumulated depreciation and impairment — (5,890,884 ) (36,964,480 ) (3,314,234 ) (2,203,511 ) — (48,373,109 ) (1,632,021 ) 452,738 3,919,086 8,813,727 690,469 420,572 968,719 15,265,311 515,024 As of December 31, 2016 and 2017, certain of the above property, plant and equipment were pledged as collateral for long-term bank loans (Notes 32). 2016 2017 2017 NT$000 NT$000 US$000 Capitalization interest 13,435 18,769 633 Capitalization interest rate applied 1.7456%~3.6166% 1.7624% 1.7624% |
Inventories
Inventories | 12 Months Ended |
Dec. 31, 2017 | |
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Inventories | 15. Inventories December 31, 2016 Cost Allowance for Carrying amount NT$000 NT$000 NT$000 Raw materials 1,787,810 (140,463 ) 1,647,347 Work in process 190,823 (14,203 ) 176,620 Finished goods 54,190 (175 ) 54,015 2,032,823 (154,841 ) 1,877,982 December 31, 2017 Cost Allowance for Carrying amount NT$000 NT$000 NT$000 US$000 Raw materials 1,769,917 (49,183 ) 1,720,734 58,054 Work in process 180,252 (4,163 ) 176,089 5,941 Finished goods 32,784 (368 ) 32,416 1,094 1,982,953 (53,714 ) 1,929,239 65,089 The cost of inventories recognized as an expense for the year: 2016 2017 2017 NT$000 NT$000 US$000 Cost of revenue 14,670,711 14,766,555 498,197 Loss on abandonment 7,098 38,301 1,292 Allowance for (reversal of) inventory valuation and obsolescence loss 67,663 (101,127 ) (3,412 ) 14,745,472 14,703,729 496,077 Raw materials are utilized throughout the course of provision of semiconductor bumping, assembly and testing services. Items used for manufacturing and product sales are insignificant. Reversal of allowance for inventory valuation loss was recognized due to the change in market value of replacement costs. As of December 31, 2016 and 2017, no inventories were pledged. |
Accounts and notes and other re
Accounts and notes and other receivables | 12 Months Ended |
Dec. 31, 2017 | |
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Accounts and notes and other receivables | 16. Accounts and notes and other receivables December 31, December 31, December 31, NT$000 NT$000 US$000 Accounts receivable 4,138,580 4,013,705 135,415 Notes receivable 1,753 2,029 69 Less: Allowance for impairment losses (87 ) — — 4,140,246 4,015,734 135,484 Other receivables 57,411 56,716 1,914 Less: Allowance for impairment losses — — — 57,411 56,716 1,914 4,197,657 4,072,450 137,398 As of December 31, 2016 and 2017, no accounts and notes and other receivables were pledged. The movements in allowance for impairment of accounts and other receivables during the years are as follows: Accounts receivable Other receivables NT$000 NT$000 January 1, 2016 — — Impairment losses recognized 87 — December 31, 2016 87 — Reversal of allowance for impairment losses (87 ) — December 31, 2017 — — December 31, 2017 (US$000) — — Receivables that were neither past due nor impaired relate to a large number of diversified customers for whom there was no recent history of default. Receivables that were past due but not impaired relate to a number of independent customers that have a good track record with the Group. Based on past experience, the management of the Company are of the opinion that no provision for impairment is necessary in respect of these balances as there has not been a significant change in credit quality and the balances are still considered fully recoverable. The individually impaired receivables related to customers that were in financial difficulties or other factors, e.g. the customers were in default or delinquency in interest or principal payments and only a portion of the receivables is expected to be recovered. The Group’s accounts receivable that were neither past due nor impaired were fully performed in line with the credit standards prescribed based on counterparties’ industrial characteristics, scale of business and profitability. Ageing of accounts receivable which are past due but not impaired is as follows: December 31, December 31, December 31, NT$000 NT$000 US$000 £ 24,141 10,482 354 1 – 2 months 728 477 16 2 – 3 months 183 426 14 3 – 4 months 245 1,431 48 > 4 months 2,013 3,056 103 27,310 15,872 535 |
Cash and cash equivalents
Cash and cash equivalents | 12 Months Ended |
Dec. 31, 2017 | |
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Cash and cash equivalents | 17. Cash and cash equivalents December 31, 2016 December 31, December 31, NT$000 NT$000 US$000 Short-term deposits 3,854,354 3,883,614 131,026 Cash 525 470 16 Cash at banks 4,106,384 4,151,630 140,068 7,961,263 8,035,714 271,110 Less: Cash and cash equivalents classified as non-current (389,897 ) — — 7,571,366 8,035,714 271,110 The cash and cash equivalents of ChipMOS Shanghai as of December 31, 2016, amounted to NT$389,897 thousand was classified and shown as “Non-current Cash at banks earns interest at floating rates based on daily bank deposit rates. Short-term deposits are made for varying periods of between 31 days and 3 months, depending on the immediate cash requirements of the Group, and earn interest at the respective short-term deposit rates. As of December 31, 2016 and 2017, no cash and cash equivalents were pledged. |
Non-current assets held for sal
Non-current assets held for sale and discontinued operations | 12 Months Ended |
Dec. 31, 2017 | |
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Non-current assets held for sale and discontinued operations | 18. Non-current a) The assets and liabilities related to ChipMOS Shanghai have been classified as non-current non-current In March 2017, the Company received NT$2,230,544 thousand (US$75,255 thousand) in cash and recognized total gain on disposal of discontinued operations amounted to NT$1,843,234 thousand (US$62,187 thousand). Based on the fair value received and the book value of its investment, gain on disposal of 54.98% equity interest is equal to NT$999,630 thousand (US$33,726 thousand) and gain on fair value remeasurement of 45.02% retained investment is equal to NT$843,604 thousand (US$28,461 thousand). b) The cash flow information of the discontinued operations is as follows: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Net cash generated from (used in) operating activities 1,072,628 (1,109,029 ) (109,079 ) (3,680 ) Net cash used in investing activities (205,292 ) (1,331,564 ) (272,925 ) (9,208 ) Net cash generated from (used in) financing activities (91,234 ) 1,463,664 461,312 15,564 Effect of foreign exchange rate changes (18,636 ) (61,336 ) (19,874 ) (671 ) Net increase (decrease) in cash and cash equivalents 757,466 (1,038,265 ) 59,434 2,005 c) Assets of disposal group classified as non-current December 31, 2016 NT$000 Cash and cash equivalents 389,897 Accounts receivable 230,523 Other receivables 202,909 Inventories 136,842 Prepayments 15,943 Other current financial assets 1,193 Property, plant and equipment, net 2,033,968 Refundable deposits 113 Prepaid rent – non-current 82,291 Other non-current 11,392 3,105,071 d) Liabilities of disposal group classified as liabilities directly related to non-current December 31, 2016 NT$000 Accounts payable 98,973 Other payables 177,178 Receipts in advance 6,687 Bank loans – current portion 7,614 Lease payable – current 27,702 Other current liabilities 34,276 Bank loans – non-current 106,461 Lease payable – non-current 27,702 Long-term deferred revenue 100,395 Guarantee deposits 651 587,639 e) Equity of disposal group classified as amounts recognized in other comprehensive income and accumulated in equity relating to non-current December 31, 2016 NT$000 Foreign currency translation reserve 287,645 f) Cumulative income or expense recognized in other comprehensive income relating to disposal group classified as held for sale: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Exchange differences on translation of foreign operations (27,893 ) (195,972 ) (287,645 ) (9,705 ) g) The results of discontinued operations are as follows: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Revenue 1,032,302 1,005,166 227,095 7,662 Cost of revenue (1,050,075 ) (986,004 ) (195,078 ) (6,582 ) Operating expenses (51,910 ) (179,178 ) (58,840 ) (1,985 ) Other operating income (expenses), net 8,469 13,753 1,429 48 Non-operating 26,981 24,158 (2,887 ) (97 ) Loss from discontinued operations before income tax (34,233 ) (122,105 ) (28,281 ) (954 ) Income tax expense — — — — Loss from discontinued operations after income tax (34,233 ) (122,105 ) (28,281 ) (954 ) Gain on disposal of discontinued operations — — 1,843,234 62,187 Profit (loss) from discontinued operations (34,233 ) (122,105 ) 1,814,953 61,233 Discontinued operations’ revenue is mainly from the segments of testing and assembly. |
Issued capital
Issued capital | 12 Months Ended |
Dec. 31, 2017 | |
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Issued capital | 19. Issued capital December 31, December 31, December 31, in thousands in thousands in thousands Authorized shares Ordinary shares 970,000 1,450,000 970,000 December 31, December 31, December 31, in thousands in thousands in thousands Ordinary shares issued and fully paid Ordinary shares 896,206 886,966 886,297 Issued capital (NT$000) 8,962,066 8,869,663 8,862,971 (US$299,021 The par value of ordinary shares issued was NT$10 per share. The movement of ordinary shares issued is set out below: 2015 2016 2017 in thousands in thousands in thousands January 1 864,619 896,206 886,966 Transactions with non-controlling 35,932 — — Restricted shares 15,752 435 — Unearned restricted shares – cancelled (97 ) — (669 ) Share cancellation (20,000 ) — — Issuance of ordinary shares for capital reorganization (Note 29) — 512,405 — Cancellation of ordinary shares from capital reorganization (Note 29) — (522,080 ) — December 31 896,206 886,966 886,297 On June 17, 2015, ThaiLin merged with the Company, with the latter being the surviving entity and issued 35,932 thousand ordinary shares in order to exchange for the shares of ThaiLin. Information about the merge is provided in Note 28. The Board of Directors approved the issuance of restricted shares on July 14, 2015 (Refer to Note 35). Other than the vesting conditions, the rights and obligations of these shares issued are the same as those of other issued ordinary shares. On August 10, 2015, the Board of Directors of the Company approved a share repurchase program for repurchase of ordinary shares by the Company of up to NT$826,800 thousand. As of December 31, 2015, 20,000 thousand shares were repurchased and recorded as treasury stock and all the repurchased shares were retired and cancelled. On February 4, 2016 and May 12, 2016, the Board of Directors of the Company approved the share repurchase programs for repurchase of ordinary shares by the Company of up to NT$600 million and NT$600 million, respectively. As of December 31, 2016 and 2017, 30,000 thousand shares were repurchased and recorded as treasury stock. On October 31, 2016, the Company’s former parent company, ChipMOS Bermuda was merged with and into the Company, with the latter being the surviving company. Please refer to Note 29 for details of the capital reorganization. Pursuant to the Merger, the Company issued 25,620,267 units of ADSs, which were listed on the NASDAQ Global Select Market, and each ADS represents 20 ordinary shares of the Company. As of December 31, 2017, the outstanding ADSs were 9,431,486 units representing 188,630 thousand ordinary shares of the Company. Major terms and conditions of the ADSs are summarized as follows: a) Voting rights: ADSs holders will have no right to vote directly in shareholders’ meetings with respect to the deposited shares. The depository bank shall vote on behalf of the ADSs holders or provide voting instruction to the designated person of the Company. The depository bank shall vote in the manner as instructed from the ADSs holders. b) Distribution of dividends: ADSs holders are deemed to have the same rights as holders of ordinary shares with respect to the distribution of dividends. |
Capital surplus and retained ea
Capital surplus and retained earnings | 12 Months Ended |
Dec. 31, 2017 | |
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Capital surplus and retained earnings | 20. Capital surplus and retained earnings The reconciliation between the opening and closing balances of each component of the Group’s consolidated equity is set out in the consolidated statements of changes in equity. a) Capital surplus Details of the Group’s capital surplus are set out below: December 31, December 31, 2016 December 31, 2017 December 31, NT$000 NT$000 NT$000 US$000 Share premium 2,501,767 6,473,471 5,873,743 198,169 Share-based payment 849,482 — — — Restricted shares 397,296 408,051 390,401 13,171 Others 7,304 7,304 7,304 247 3,755,849 6,888,826 6,271,448 211,587 Pursuant to the ROC Company Act, capital surplus arising from paid-in paid-in b) Retained earnings (a) According to the Company’s Articles of Incorporation, current year’s earnings before tax, if any, shall be distributed in the following order: i) Pay all taxes and duties; ii) Offset prior years’ operating losses, if any; iii) Set aside 10% of the remaining amount after deducting i) and ii) as legal reserve; iv) After items i), ii) and iii) were deducted, the remaining amount may be distributed as shareholders’ dividend. (b) The Company’s dividend policy is summarized below: as the Company operates in a volatile business environment, the dividend is distributed taking into consideration the Company’s financial structure, operating results and future expansion plans. The earnings distribution of the Company may be made by way of cash dividend or stock dividend; provided that cash dividends shall account for at least 10% of the total dividends distributed. The earnings distribution will be proposed by the Board of Directors and approved at the shareholders’ meeting. (c) Legal reserve can only be used to offset deficits or increase capital in issuing ordinary shares or in distribution cash. The amount of legal reserve that may be used to increase capital or distribute cash shall be limited to the portion of the reserve balance exceeding 25% of the capital stock. (d) In accordance with the ROC Securities and Future Bureau regulations, in addition to legal reserve, the Company should set aside a special reserve in an amount equal to the net change in the reduction of prior year’s shareholders’ equity, resulting from adjustments. Such special reserve is not available for dividend distribution. In the subsequent year(s), if the year-end (e) The distribution of 2014, 2015 and 2016 were resolved at the shareholders’ meetings on June 3, 2015 and May 31, 2016 and May 26, 2017, respectively. Details are summarized below: 2014 2015 2016 Amount Distribution Amount Distribution Amount Distribution NT$000 NT$ NT$000 NT$ NT$000 NT$ Legal reserve 331,863 — 223,047 — 28,680 — Cash dividend 1,999,225 2.22 1,792,553 2.09 257,026 0.30 Cash distribution from capital surplus — — — — 599,728 0.70 |
Treasury stock
Treasury stock | 12 Months Ended |
Dec. 31, 2017 | |
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Treasury stock | 21. Treasury stock The movement of treasury stock is set out below: 2015 2016 2017 Shares (in Amount Shares (in Amount Shares (in Amount Amount January 1 — — — — 30,085 1,007,654 33,997 Treasury stock (repurchased) 20,000 633,737 30,085 1,007,654 — — — Treasury stock (cancelled) (20,000 ) (633,737 ) — — — — — December 31 — — 30,085 1,007,654 30,085 1,007,654 33,997 Pursuant to the ROC Securities and Exchange Act, the number of shares repurchased as treasury stock should not exceed 10% of the number of the Company’s issued and outstanding shares and the amount repurchased should not exceed the sum of retained earnings, paid-in Pursuant to the ROC Securities and Exchange Act, treasury stock should not be pledged as collateral and is not entitled to dividends before it is reissued. |
Bank loans
Bank loans | 12 Months Ended |
Dec. 31, 2017 | |
Long-term bank loans [Member] | |
Bank loans | 22. Long-term bank loans Type of loans Period and payment term December 31, December 31, December 31, NT$000 NT$000 US$000 Syndicated bank loan Borrowing period is from June 30, 2016 to June 30, 2021; interest is repayable monthly; principal is repayable semi-annually from December 30, 2017. 10,800,000 9,675,301 326,427 Less: Fee on syndicated bank loan (49,995 ) (33,280 ) (1,122 ) Less: Current portion (fee included) (1,062,285 ) (2,143,168 ) (72,307 ) 9,687,720 7,498,853 252,998 Interest rate range 1.7895 % 1.7895 % 1.7895 % Unused credit lines of long-term bank loans NT$000 2,400,000 2,400,000 On May 16, 2016, the Company entered into a syndicated loan with ten banks in Taiwan, including Land Bank of Taiwan, in the amount of NT$13.2 billion with a term of five years. Funding from this syndicated loan was used to repay the prior syndicated loan in 2014 and broaden the Company’s working capital. Pursuant to the syndicated loan agreement, the Group is required to maintain certain financial ratios including current ratio, interest protection multiples and debt to equity ratio during the loan periods. As of December 31, 2016 and 2017, the Group was in compliance with the financial ratio requirements. The Group’s bank loans are mortgaged by certain land, buildings and equipment as collateral (Note 32). Details of the repayment schedule in respect of the bank loans are as follows: December 31, 2016 December 31, December 31, NT$000 NT$000 US$000 Less than 1 year 1,062,285 2,143,168 72,307 2 to 5 years 9,687,720 7,498,853 252,998 10,750,005 9,642,021 325,305 |
Short-term bank loans [member] | |
Bank loans | 26. Short-term bank loans December 31, December 31, December 31, NT$000 NT$000 US$000 Unsecured bank loans — 969,353 32,704 Annual interest rate — 0.55%~1.71% 0.55%~1.71% Unused credit lines of short-term bank loans are as follows: December 31, December 31, NT$000 3,119,000 3,028,357 US$000 80,000 80,000 |
Retirement benefit plans
Retirement benefit plans | 12 Months Ended |
Dec. 31, 2017 | |
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Retirement benefit plans | 23. Retirement benefit plans a) Defined benefit plans (a) The Company has a defined benefit pension plan in accordance with the Labor Standards Act, covering all regular employees’ service years prior to the enforcement of the Labor Pension Act on July 1, 2005 and service years thereafter of employees who chose to continue to be subject to the pension mechanism under the Act. Under the defined benefit pension plan, two units are accrued for each year of service for the first 15 years and one unit for each additional year thereafter, subject to a maximum of 45 units. Pension benefits are based on the number of units accrued and the average monthly salaries and wages of the last 6 months prior to retirement. The Company contributes monthly an amount equal to 2% of the employees’ monthly salaries and wages to the pension fund deposited with Bank of Taiwan, the trustee, under the name of the independent pension fund committee. Also, the Company would assess the balance in the aforementioned labor pension reserve account by the end of every year. If the account balance is insufficient to pay the pension calculated by the aforementioned method, to the labors expected to be qualified for retirement next year, the Company will make contribution to cover the deficit by March of following year. (b) The amounts recognized in the statements of financial position are as follows: December 31, December 31, December 31, 2017 NT$000 NT$000 US$000 Present value of defined benefit obligations (894,163 ) (838,543 ) (28,291 ) Fair value of plan assets 347,195 360,017 12,146 Net defined benefit liability (546,968 ) (478,526 ) (16,145 ) (c) Movements in net defined benefit liability are as follows: 2016 Present value of Fair value of plan assets Net defined NT$000 NT$000 NT$000 January 1 (844,166 ) 324,695 (519,471 ) Current service cost (321 ) — (321 ) Interest (expense) income (14,644 ) 5,768 (8,876 ) (859,131 ) 330,463 (528,668 ) Remeasurements: Return of plan assets (not including the amount included in interest income or expense) — (3,413 ) (3,413 ) Financial assumption movement effect (31,294 ) — (31,294 ) Experience adjustments (8,676 ) — (8,676 ) (39,970 ) (3,413 ) (43,383 ) Pension fund contribution — 25,083 25,083 Paid pension 4,938 (4,938 ) — December 31 (894,163 ) 347,195 (546,968 ) 2017 Present value of Fair value of plan assets Net defined Net defined NT$000 NT$000 NT$000 US$000 January 1 (894,163 ) 347,195 (546,968 ) (18,454 ) Current service cost (386 ) — (386 ) (13 ) Interest (expense) income (13,236 ) 5,226 (8,010 ) (270 ) (907,785 ) 352,421 (555,364 ) (18,737 ) Remeasurements: Return of plan assets (not including the amount included in interest income or expense) — (1,842 ) (1,842 ) (62 ) Financial assumption movement effect 28,506 — 28,506 962 Experience adjustments 24,174 — 24,174 815 52,680 (1,842 ) 50,838 1,715 Pension fund contribution — 26,000 26,000 877 Paid pension 16,562 (16,562 ) — — December 31 (838,543 ) 360,017 (478,526 ) (16,145 ) (d) The Bank of Taiwan was commissioned to manage the Fund of the Company’s defined benefit pension plan (the “Fund”) in accordance with the Fund’s annual investment and utilization plan and the “Regulations for Revenues, Expenditures, Safeguard and Utilization of the Labor Retirement Fund” (Article 6: The scope of utilization for the Fund includes deposit in domestic or foreign financial institutions, investment in domestic or foreign listed, over-the-counter, two-year (e) The principal actuarial assumptions used were as follows: 2016 2017 Discount rate used in determining present values 1.50 % 1.75 % Expected future salary increases 3.50 % 3.50 % Assumptions regarding future mortality are set based on actuarial advice in accordance with published statistics and experience in each territory. Because the main actuarial assumption changed, the present value of defined benefit obligations is affected. The sensitivity analysis of present value of defined benefit obligations effected by the changes of significant actuarial assumptions at December 31, 2016 and 2017 are shown below: Discount rate Future salary increases Increase Decrease Increase Decrease December 31, 2016 Effect on present value of defined benefit obligations (31,294 ) 32,893 32,174 (30,787 ) December 31, 2017 Effect on present value of defined benefit obligations (27,192 ) 28,506 27,955 (26,816 ) The sensitivity analysis above is based on other conditions are unchanged but only one assumption is changed. In practice, more than one assumption may change all at once. The method of sensitivity analysis and the method of calculating net pension liability in the statements of financial position are the same. The major assumptions of the actuarial valuation remain unchanged from 2016. (f) The Group expects to make contributions of NT$26,910 thousand (US$908 thousand) during 2018. (g) As of December 31, 2017, the weighted average duration of that retirement plan is 13.4 years. The analysis of timing of the future pension payment is as follows: December 31, 2017 NT$000 US$000 Within 1 year 28,007 945 1-2 31,702 1,070 2-5 102,703 3,465 6-10 178,720 6,029 341,132 11,509 b) Defined contribution plans Effective July 1, 2005, the Company established a defined contribution pension plan (the “New Plan”) under the Labor Pension Act, covering all regular employees with ROC nationality. Under the New Plan, the Company contributes monthly an amount based on 6% of the employees’ monthly salaries and wages to the employees’ individual pension accounts at the Bureau of Labor Insurance. The benefits accrued are paid monthly or in lump sum upon termination of employment. The pension costs under defined contribution pension plans of the Company for the years ended December 31, 2016 and 2017 were NT$174,096 thousand and NT$190,106 thousand (US$6,414 thousand), respectively. |
Other Payables
Other Payables | 12 Months Ended |
Dec. 31, 2017 | |
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Other Payables | 24. Other Payables December 31, December 31, December 31, NT$000 NT$000 US$000 Salaries and bonus payable 443,993 601,239 20,285 Interest payable 1,059 2,854 96 Accrued pension costs 29,930 32,402 1,093 Employees’ bonus 70,553 371,912 12,548 Directors’ remuneration 3,528 18,596 627 Other expense payable 862,991 953,179 32,159 1,412,054 1,980,182 66,808 |
Provisions - current
Provisions - current | 12 Months Ended |
Dec. 31, 2017 | |
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Provisions - current | 25. Provisions – current Movements in provisions are as follows: 2017 Provisions for Provisions for Total Total NT$000 NT$000 NT$000 US$000 January 1 66,065 14,654 80,719 2,723 Provision 117,234 119,318 236,552 7,981 Payment (113,143 ) (76,817 ) (189,960 ) (6,409 ) December 31 70,156 57,155 127,311 4,295 The Company’s provisions include sales allowance and deficiency compensation. The detailed information is provided in Note 2 e). |
Significant commitments and con
Significant commitments and contingencies | 12 Months Ended |
Dec. 31, 2017 | |
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Significant commitments and contingencies | 27. Significant commitments and contingencies Operating leases commitments ChipMOS Taiwan entered into several operating lease contracts for land. These renewable operating leases will expire by 2032 and 2034. ChipMOS USA entered into several operating lease contracts for office space. These renewable operating leases will expire by 2018 and 2019. Future minimum lease payments under those leases are as follows: December 31, December 31, December 31, NT$000 NT$000 US$000 £ 39,929 39,342 1,327 2 to 5 years 140,328 130,182 4,392 > 5 years 176,897 139,899 4,720 357,154 309,423 10,439 Capital commitments Capital expenditures that are contracted for, but not provided for are as follows: December 31, December 31, December 31, NT$000 NT$000 US$000 Property, plant and equipment 1,615,460 2,178,262 73,491 Other commitments A letter of guarantee was issued by Bank of Taiwan to the Tariff Bureau of the Ministry of Finance for making payment of customs-duty deposits when importing. The amount of letter of guarantee will occupy the credit lines for short-term loans of ChipMOS Taiwan. As of December 31, 2016 and 2017, the amount of NT$131,000 thousand and NT$97,500 thousand (US$3,289 thousand) are guaranteed by Bank of Taiwan. As described in Note 29, as of October 31, 2016, the Company merged with its former parent company, ChipMOS Bermuda and as a result, the Company deducted unappropriated retained earnings by NT$5,052,343 thousand. The Company has filed an application to the National Taxation Bureau of the Northern Area, Ministry of Finance to apply the accumulated deficit amount, resulted from subtracting the aforementioned amount, as a deduction in the calculation of years 2015 and 2016 additional 10% tax on unappropriated retained earnings. |
Transactions with non-controlli
Transactions with non-controlling interests | 12 Months Ended |
Dec. 31, 2017 | |
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Transactions with non-controlling interests | 28. Transactions with non-controlling The merger of ChipMOS Taiwan and ThaiLin was approved by the respective shareholders at the special shareholders’ meetings held on December 30, 2014 and was completed on June 17, 2015 and ChipMOS Taiwan is the surviving entity. ThaiLin’s shareholders were offered a combination of NT$12.5 in cash and 0.311 of one ChipMOS Taiwan ordinary share in exchange for each ThaiLin ordinary share held. ChipMOS Taiwan issued 35,932 thousand shares and paid NT$1,444,224 thousand in cash to exchange for 52.46% of ThaiLin’s shares. The transaction was treated as an equity transaction. The difference between the amount by which the non-controlling The effect on the equity attributed to the Company during the period is summarized as follows: 2015 NT$000 Carrying amount of non-controlling 2,637,316 Consideration paid to non-controlling (2,921,041 ) Other component of equity (17,964 ) Capital surplus 26,189 Retained earnings (275,500 ) |
Capital reorganization
Capital reorganization | 12 Months Ended |
Dec. 31, 2017 | |
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Capital reorganization | 29. Capital reorganization To integrate resources, the Company’s former parent company, ChipMOS Bermuda, was merged with and into the Company as of October 31, 2016, the record date of the Merger, with the latter being the surviving entity and ChipMOS Bermuda being the dissolved entity. Under the Merger Agreement, each shareholder of ChipMOS Bermuda is entitled to receive, with respect to each ChipMOS Bermuda share, 0.9355 units of the Company’s newly-issued ADSs trading on the NASDAQ Global Select Market (each ADS unit represents 20 shares of the Company’s ordinary shares) and US$3.71 in cash. The Company issued 25,620,267 units of ADSs (representing 512,405 thousand ordinary shares) and paid US$101,657 thousand in cash (equivalent to NT$3,208,310 thousand) as the total consideration. In addition, the Company paid NT$133,311 thousand directly attributable transaction cost for the capital reorganization. As the result, the Company paid NT$3,341,621 thousand in cash for the capital reorganization. The Company issued 512,405 thousand shares for the capital reorganization, and reduced capital by cancelling 522,080 thousand shares originally held by ChipMOS Bermuda. After the capital reorganization, the Company’s shares was net decreased by 9,675 thousand shares. When cancelling treasury stocks, the Company deducted capital surplus equal to the proportion of cancelled shares. Due to the deficit in capital surplus, the Company deducted unappropriated retained earnings by NT$5,052,343 thousand. As of October 30, 2016, the ending balance of “Predecessors’ interests” was NT$1,692,918 thousand, which represents ChipMOS Bermuda’s net assets as if it had always been combined. The amount has been eliminated in the record date of the Merger. |
Supplementary cash flow informa
Supplementary cash flow information | 12 Months Ended |
Dec. 31, 2017 | |
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Supplementary cash flow information | 30. Supplementary cash flow information Partial cash paid for investing and financing activities a) Property, plant and equipment 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Purchase in property, plant and equipment 3,644,560 4,690,995 4,849,331 163,608 Add: Beginning balance of payable to contractors and equipment suppliers 1,307,459 523,962 839,983 28,339 Add: Beginning balance of lease payable — — 94,952 3,204 Less: Ending balance of payable to contractors and equipment suppliers (523,962 ) (647,486 ) (878,065 ) (29,624 ) Less: Ending balance of lease payable — (96,006 ) (84,192 ) (2,841 ) Less: Transfer from prepaid equipment (shown as “Other non-current — — (139,304 ) (4,700 ) Cash paid for acquisition of property, plant and equipment 4,428,057 4,471,465 4,682,705 157,986 b) Treasury stock 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Repurchase of shares 1,862,362 1,007,654 — — Less: Beginning balance of prepayment for the repurchase of shares (421,003 ) — — — Cash paid for purchase of treasury stock 1,441,359 1,007,654 — — c) Capital reorganization 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Net assets acquired from ChipMOS Bermuda — 12,987,736 — — Less: Issuance of shares — (9,779,426 ) — — Cash consideration — 3,208,310 — — Directly attributable transaction cost — 133,311 — — Cash paid for capital reorganization — 3,341,621 — — d) Disposal of a subsidiary 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Disposal of a subsidiary — — 2,166,151 73,082 Add: Ending balance of other payables* — — 64,393 2,173 Less: Cash and cash equivalents of discontinued operations — — (449,331 ) (15,160 ) Cash received from disposal of a subsidiary — — 1,781,213 60,095 * According to the Equity Interest Transfer Agreement, the Group accrued the estimated payment to investor based on the operating performance of ChipMOS Shanghai and as a result, cash received from disposal of discontinued operations amounted to NT$64,393 thousand (US$2,173 thousand) will be payable in 2018. e) Reconciliation of liabilities arising from financing activities Non-Cash flow As of January 1, 2017 Cash flow* Amortization of As of December 31, 2017 NT$000 NT$000 NT$000 NT$000 US$000 Long-term loans (include the current portion) 10,750,005 (1,124,699 ) 16,715 9,642,021 325,305 Short-term loans — 969,353 — 969,353 32,704 Guarantee deposits 1,404 (33 ) — 1,371 46 10,751,409 (155,379 ) 16,715 10,612,745 358,055 * Above movement schedule is exclusively for continuing operations, reconciliation to the statement of cash flow should include movements from discontinued operations for proceeds from long-term and short-term loans amounted to NT$148,829 thousand (US$5,021 thousand) and NT$312,483 thousand (US$10,543 thousand), respectively. |
Related party transactions
Related party transactions | 12 Months Ended |
Dec. 31, 2017 | |
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Related party transactions | 31. Related party transactions a) Parent and ultimate controlling party On October 31, 2016, the Company’s former parent company, ChipMOS Bermuda, was merged with and into the Company through a share exchange with the latter being the surviving entity and ChipMOS Bermuda being the dissolved entity. After the Merger, the Company has neither a parent company nor an ultimate controlling party. The transactions between the Company and its subsidiaries were eliminated in the accompanying consolidated financial statements and were not disclosed herein. The transactions between the Group and other related parties are as follows. b) Names of related parties and relationship Name Relationship ChipMOS Shanghai Associate JMC Associate c) Significant related party transactions (a) Subcontracting fee 2017 2017 NT$000 US$000 ChipMOS Shanghai 41,183 1,389 There were no subcontracting fee to related parties for the years ended December 31, 2015 and 2016. (b) Disposal of property, plant and equipment 2017 Selling price Gain on disposal NT$000 US$000 NT$000 US$000 ChipMOS Shanghai 21,982 742 20,240 683 There were no disposal of property, plant, and equipment to related parties for the years ended December 31, 2015 and 2016. (c) Acquisition of financial assets In June 2017, ChipMOS BVI participated in ChipMOS Shanghai’s increase of paid-in (d) Patent licensing agreement In May 2016, the Company and ChipMOS Shanghai entered into a patent licensing agreement. Under the agreement, ChipMOS Shanghai paid the Company a licensing fee in the aggregate total of US$2,500 thousand (amended to US$1,000 thousand in January 2017) which was accounted for as receipts in advance and long-term deferred revenue, and recognized royalty income for 10 years from the effective date. In addition, ChipMOS Shanghai shall pay the Company a running royalty for the foregoing license equivalent to 0.5% of the total revenue from the licensed products. Given that the related production lines of ChipMOS Shanghai have begun its operations in April 2017, the Company recognized royalty income henceforth. The Company recognized receipts in advance and long-term deferred revenue amounted to NT$3,018 thousand (US$102 thousand) and NT$24,898 thousand (US$840 thousand), respectively, as of December 31, 2017 and royalty income amounted to NT$2,828 thousand (US$96 thousand) for the nine months then ended. In October 2011, ChipMOS Bermuda and ChipMOS Shanghai entered into a patent licensing agreement which has a term of 10 years starting from August 1, 2012. Under the agreement, ChipMOS Shanghai will pay ChipMOS Bermuda a royalty in the aggregate total of RMB 27,400 thousand, which was accounted as receipts in advance and payable in 40 quarterly installments of RMB 685 thousand. The rights and obligations of this agreement have been transferred to the Company on October 31, 2016. In March 2017, ChipMOS Shanghai was derecognized from the consolidated financial statements and recorded as “Investment in associates”, therefore, royalty income for the three months ended March 31, 2017 were eliminated on a consolidated basis. The Company recognized receipts in advance amounted to NT$1,039 thousand (US$35 thousand) as of December 31, 2017 and royalty income amounted to NT$9,170 thousand (US$309 thousand) for the year then ended. d) Key management personnel compensation 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Short-term employee benefits 217,091 152,319 188,105 6,346 Post-employment compensation 2,249 3,335 5,622 190 Share-based payments 100,280 109,255 18,736 632 319,620 264,909 212,463 7,168 |
Pledged or mortgaged assets
Pledged or mortgaged assets | 12 Months Ended |
Dec. 31, 2017 | |
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Pledged or mortgaged assets | 32. Pledged or mortgaged assets The Group provided certain assets as collateral mainly for long-term bank loans (Note 22) and leases, which were as follows: December 31, December 31, December 31, NT$000 NT$000 US$000 Property, plant and equipment, net (Note 14) 8,020,905 7,164,089 241,703 Other financial assets – non current 70,677 70,241 2,370 8,091,582 7,234,330 244,073 |
Financial instruments by catego
Financial instruments by category | 12 Months Ended |
Dec. 31, 2017 | |
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Financial instruments by category | 33. Financial instruments by category December 31, 2016 December 31, December 31, NT$000 NT$000 US$000 Financial assets Available-for-sale 9,960 20,890 705 Loans and receivables (including cash and cash equivalents, other financial assets, accounts and notes receivable, other receivables and refundable deposits) 11,862,621 12,204,292 411,751 11,872,581 12,225,182 412,456 Financial liabilities Financial liabilities at amortized cost (including bank loans, accounts payable, payables to contractors and equipment suppliers, lease payable, other payables and guarantee deposits) 13,579,473 14,024,304 473,155 |
Financial risk management and f
Financial risk management and fair values of financial instruments | 12 Months Ended |
Dec. 31, 2017 | |
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Financial risk management and fair values of financial instruments | 34. Financial risk management and fair values of financial instruments a) Financial risk management The Group’s risk management objective is to manage the market risk, credit risk and liquidity risk related to its operating activities. The Group identifies, measures and manages the aforementioned risks based on policy and risk appetite. The Group has established appropriate policies, procedures and internal controls for financial risk management. Before entering into significant financial transactions, due approval process by the Board of Directors must be carried out based on related protocols and internal control procedures. The Group complies with its financial risk management policies at all times. (a) Market risk Market risk is the risk that the fair value or future cash flows of a financial instrument will fluctuate because of changes in market prices. Market risks comprise foreign currency risk, interest rate risk, and other price risk (such as equity price risk). i) Foreign currency risk The Group’s exposure to the risk of changes in foreign exchange rates relates primarily to the Group’s operating activities (when revenue or expense is denominated in a different currency from the Group’s functional currency) and the Group’s net investments in foreign subsidiaries. The Group applies natural hedges from using accounts receivable and accounts payable denominated in the same currency. However, this natural hedge does not concur with the requirement for hedge accounting. Furthermore, as net investments in foreign subsidiaries are for strategic purposes, they are not hedged by the Group. The Group’s foreign currency exposure gives rise to market risks associated with exchange rate movements against the NT dollar for cash and cash equivalents, accounts receivable, other receivables, bank loans, accounts payable and other payables. The Group’s businesses involve some non-functional December 31, 2016 Foreign currency Exchange rate Carrying amount Financial assets Monetary items US$000 178,201 32.2500 5,746,982 JPY000 517,114 0.2756 142,517 Financial liabilities Monetary items US$000 7,802 32.2500 251,615 JPY000 550,456 0.2756 151,706 December 31, 2017 Foreign currency Exchange rate Carrying amount Financial assets Monetary items US$000 208,066 29.7600 6,192,044 JPY000 798,254 0.2642 210,899 RMB000 167,484 4.5650 764,564 Financial liabilities Monetary items US$000 16,036 29.7600 477,231 JPY000 1,071,432 0.2642 283,072 The total exchange gain and the total exchange loss recognized include realized and unrealized gain and loss arising from significant foreign exchange variation on the monetary items held by the Group for the years ended December 31, 2016 and 2017 amounted to loss of NT$195,326 thousand and loss of NT$418,970 thousand (US$14,135 thousand), respectively. The following table details the Group’s exposure at the end of the reporting period to currency risk arising from recognized monetary assets or liabilities denominated in a currency other than the functional currency of the entity to which they relate. December 31, 2016 Change in Effect on profit Effect on other Financial assets US$000 5 % 287,349 — JPY000 5 % 7,126 — Financial liabilities US$000 5 % 12,581 — JPY000 5 % 7,585 — December 31, 2017 Change in Effect on profit Effect on other Financial assets US$000 5 % 309,602 — JPY000 5 % 10,545 — RMB000 5 % 38,228 — Financial liabilities US$000 5 % 23,862 — JPY000 5 % 14,154 — ii) Interest rate risk Interest rate risk is the risk that the fair value or future cash flows of a financial instrument will fluctuate because of changes in market interest rates. The Group’s exposure to the risk of changes in market interest rates relates primarily to the Group’s bank loans with floating interest rates. The Group manages its interest rate risk by having a balanced portfolio of fixed and variable rate bank loans. At December 31, 2017, it is estimated that a general increase or decrease of 100 basis points (1%) in interest rates, with all other variables held constant, would decrease or increase the Group’s profit by approximately NT$106,447 thousand (US$3,591 thousand) (2016: NT$108,000 thousand). iii) Equity price risk The Group is exposed to equity price risk through its investments in listed equity securities classified as financial assets at fair value through profit or loss. The Group manages this exposure by maintaining a portfolio of investments with different risk and return profiles. At the reporting date, no aforesaid equity security was held and no sensitivity analysis was disclosed. (b) Credit risk Credit risk is the risk that a counterparty will not meet its obligations under a financial instrument or customer contract, leading to a financial loss. The Group is exposed to credit risk from its operating activities (primarily accounts and other receivables) and from its financing activities (primarily deposits with banks and financial instruments). Each business unit performs ongoing credit evaluation of the debtors’ financial condition according to the Group’s established policy, procedures and control relating to customer credit risk management. The Group maintains an account for allowance for doubtful receivables based upon the available facts and circumstances, historical collection and write-off Credit risk from balances with banks and financial institutions is managed by the Group’s finance unit in accordance with the Group’s policy. Bank balances are held with financial institutions of good standing. The Group’s exposure to credit risk arising from the default of counter-parties is limited to the carrying amount of these instruments. (c) Liquidity risk Liquidity risk is the risk that the Group will encounter difficulty in raising funds to meet commitments associated with financial instruments. The Group monitors and maintains adequate cash and banking facilities to finance the Group’s operations. See Notes 22 and 26 about the unused credit lines of the Group. The maturity profile of the Group’s non-derivative December 31, 2016 £ 1 year 2 to 5 years > 5 years Total NT$000 NT$000 NT$000 NT$000 Long-term bank loans (including current portion) 1,272,266 10,110,289 — 11,382,555 Accounts payable and payables to contractors and equipment suppliers 1,375,408 — — 1,375,408 Other payables 1,412,054 — — 1,412,054 Lease payable 12,000 30,000 — 42,000 Guarantee deposits — — 1,404 1,404 4,071,728 10,140,289 1,404 14,213,421 December 31, 2017 £ 1 year 2 to 5 years > 5 years Total Total NT$000 NT$000 NT$000 NT$000 US$000 Short-term bank loans 971,813 — — 971,813 32,787 Long-term bank loans (including current portion) 2,321,459 7,740,267 — 10,061,726 339,465 Accounts payable and payables to contractors and equipment suppliers (including related parties) 1,401,499 — — 1,401,499 47,284 Other payables (including related parties) 1,980,218 — — 1,980,218 66,809 Lease payable 12,266 18,266 — 30,532 1,030 Guarantee deposits — — 1,371 1,371 46 6,687,255 7,758,533 1,371 14,447,159 487,421 b) Fair values of financial instruments The notional amounts of financial assets and financial liabilities are assumed to approximate their fair values. |
Share-based payments
Share-based payments | 12 Months Ended |
Dec. 31, 2017 | |
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Share-based payments | 35. Share-based payments Stock option plan The former parent company of the Group, ChipMOS Bermuda adopted three option plans in 2001, 2006 and 2011 which have 2,250,000, 1,750,000 and 1,000,000 shares available for issuance, respectively. The stock option plans provide that the directors, officers, employees and consultants of ChipMOS Bermuda and its affiliates may be granted options to purchase ordinary shares of ChipMOS Bermuda at specified exercise prices. All outstanding stock options issued by ChipMOS Bermuda and received by the employees of the Company, whether vested or unvested, were settled in cash by ChipMOS Bermuda prior to the Merger in accordance with the terms of the merger agreement. The following table illustrates the number and weighted average exercise prices (“WAEP”) of, and movements in, share options during the periods indicated: Ten months ended 2016 Number of WAEP Outstanding at the beginning of the period 1,062,250 13.57 Forfeited (25,084 ) 15.35 Exercised (97,715 ) 7.21 Expired (49,500 ) 20.57 Early settled (889,951 ) 13.83 Outstanding at the end of the period — — Exercisable at the end of the period — — The weighted average share price at the date of exercise of these options exercised in 2016 was US$18.10. There were no outstanding stock options as of December 31, 2016 and 2017. Share appreciation rights (“SARs”) The former parent company of the Group, ChipMOS Bermuda adopted three SARs plans in 2006, 2008 and 2013 which have 500,000, 750,000 and 1,000,000 rights available for issuance, respectively. The SARs plans provide that the directors, officers and employees of ChipMOS Bermuda and its affiliates may be granted cash-settled share appreciation rights. All outstanding share appreciation rights issued by ChipMOS Bermuda and received by the employees of the Company, whether vested or unvested, were settled in cash by ChipMOS Bermuda prior to the Merger in accordance with the terms of the merger agreement. The following table illustrates the number and WAEP of, and movements in, SARs during the periods indicated: Ten months ended 2016 Number of rights WAEP Outstanding at the beginning of the period 588,596 14.07 Granted 37,500 19.55 Forfeited (9,785 ) 15.16 Exercised (123,033 ) 11.26 Early settled (493,278 ) 15.17 Outstanding at the end of the period — — Exercisable at the end of the period — — The weighted average share price at the date of exercise of these SARs exercised in 2016 was US$19.18. The weighted average fair value of SARs granted during 2016 was US$1.34. There were no outstanding share appreciation rights as of December 31, 2016 and 2017. Restricted Shares On November 12, 2014, the Board of Directors of the Company approved 2014 Restricted Stock Award Agreement which has 17,300 thousand restricted shares available for issuance. The par value and granting price of the restricted shares were NT$10 and zero, respectively. The issuance of the restricted shares was approved by the Special General Meeting of the Shareholders of the Company on December 30, 2014 and approved by the Financial Supervisory Commission ROC on June 30, 2015. On July 14, 2015 and April 18, 2016, the Board of Directors of the Company approved to set July 21, 2015 and May 10, 2016 as the Record Date of the issuance of 15,752 thousand and 1,548 thousand restricted shares. When the employees of ChipMOS Taiwan accomplished the following years of service and performance conditions, the received restricted shares will be vested based on the vesting ratio. The 1 st The 2 nd The 3 rd Years of service following the receipt of restricted shares Continuous service Continuous service Continuous service Grade of performance appraisal >=B+ >=B+ >=B+ Compliance of terms agreed by the staff and the Company No violation No violation No violation Vesting ratio of numbers of restricted shares received 30% 30% 40% The restricted shares issued by the Company cannot be transferred during the vesting period, but voting right and dividend right are not restricted. Employees are required to return the shares but not required to return the dividends received if they resign during the vesting period. When the employees accomplish the years of service and performance conditions, the received restricted shares will be vested based on the vesting ratio. During 2016 and 2017, the Group recognized NT$356,463 thousand and NT$123,021 thousand (US$4,151 thousand), respectively, compensation expenses in respect of the transactions of share-based payments. |
Capital management
Capital management | 12 Months Ended |
Dec. 31, 2017 | |
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Capital management | 36. Capital management The Group manages its capital to ensure that entities in the Group will be able to continue as a going concern while maximizing the return to shareholders through the optimization of the balance between debt and equity. The Group reviews the capital structure on an ongoing basis. As part of this review, the directors consider the cost of capital and the risks associated with each class of capital. The Group will balance its overall capital structure through the payment of dividends, new share issues and the issue of new debt or the repayment of existing debt. The Group’s overall strategy remains unchanged from 2016. The Group monitors capital using the liabilities to assets ratio, the percentages of which as of December 31, 2016 and 2017 were as follows: December 31, 2016 December 31, 2017 December 31, 2017 NT$000 NT$000 US$000 Total liabilities 15,048,258 15,138,993 510,762 Total assets 31,295,960 33,259,942 1,122,130 Liabilities to assets ratio 48.08 % 45.52 % 45.52 % Compared to December 31, 2016, the liabilities to assets ratio decreased on December 31, 2017 was due to the acquisition of production equipment required. |
Event after the reporting perio
Event after the reporting periods | 12 Months Ended |
Dec. 31, 2017 | |
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Event after the reporting periods | 37. Event after the reporting periods a) The amendment to the Income Tax Act has been approved and promulgated in February 2018 raising the profit-seeking enterprise income tax rate from 17% to 20%, decrease the tax rate on unappropriated retained earnings from 10% to 5%, and abandon the imputation tax credit account effective from fiscal year starting on January 1, 2018. b) In January 2018, ChipMOS BVI participated in ChipMOS Shanghai’s increase of paid-in c) On March 15, 2018, by considering the adjustment of capital structure and increasing of return of equity, the Company’s Board of Directors approved to reduce and return capital stock to shareholders at $1.5 per share. The proposal will be further discussed in shareholders’ meeting. |
Approval of the financial state
Approval of the financial statements | 12 Months Ended |
Dec. 31, 2017 | |
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Approval of the financial statements | 38. Approval of the financial statements These consolidated financial statements were approved and authorized for issue by the Board of Directors on April 19, 2018. |
Financial Statements Schedule_
Financial Statements Schedule: Valuation and Qualifying Accounts | 12 Months Ended |
Dec. 31, 2017 | |
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Financial Statements Schedule: Valuation and Qualifying Accounts | 39. Financial Statements Schedule: Valuation and Qualifying Accounts January 1 Additions Deduction / Write-offs Exchange Non-current December 31 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 Year of 2015 : Allowance for impairment of property, plant and equipment 2,110,362 1,478 (85,351 ) (31,774 ) — 1,994,715 Allowance for impairment of obsolescence and decline in market value of inventories 82,582 12,717 (151 ) (112 ) — 95,036 Year of 2016 : Allowance for impairment of property, plant and equipment 1,994,715 8,198 (45,319 ) (118,046 ) (1,480,278 ) 359,270 Allowance for impairment of obsolescence and decline in market value of inventories 95,036 66,894 — (557 ) (6,532 ) 154,841 Year of 2017 : Allowance for impairment of property, plant and equipment 359,270 956 (39,771 ) — — 320,455 Allowance for impairment of obsolescence and decline in market value of inventories 154,841 — (101,127 ) — — 53,714 |
Basis of preparation of finan44
Basis of preparation of financial statements and principal accounting policies (Policies) | 12 Months Ended |
Dec. 31, 2017 | |
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Basis of preparation | a) Basis of preparation These consolidated financial statements have been prepared in accordance with International Financial Reporting Standards (“IFRSs”), which collective term includes all applicable individual IFRSs, International Accounting Standards (“IASs”) issued by the International Accounting Standards Board (“IASB”) and Interpretations issued by the International Financial Reporting Interpretations Committee (“IFRIC”) of the IASB. The consolidated financial statements have been prepared on a historical cost basis, except for the defined benefit pension plans – plan assets measured at fair value. These consolidated financial statements are presented in New Taiwan dollars (“NT$”), which is the Company’s functional currency. |
New and amended standards adopted by the group | b) New and amended standards adopted by the group Amendments to IAS 7 “Disclosure Initiative” This amendment requires that an entity shall provide more disclosures related to changes in liabilities arising from financing activities, including both changes arising from cash flows and non-cash |
New and revised International Financial Reporting Standards not yet adopted | c) New and revised International Financial Reporting Standards not yet adopted Amendments to IFRSs which have been published but are not mandatory for the financial year ending December 31, 2017 are not expected to have a material impact on the Group. Major Amendment to IFRSs that are not yet effective are listed below: New Standards, Interpretations and Amendments Effective date by IFRS 9, “Financial Instruments” January 1, 2018 IFRS 15, “Revenue from Contracts with Customers” January 1, 2018 IFRS 16, “Leases” January 1, 2019 When adopting the new standards effective from 2018, the Group will apply the new rules under IFRS 9 “Financial Instruments” (“IFRS 9”) and adopt IFRS 15 “Revenue from Contracts with Customers” (“IFRS 15”) using the modified retrospective approach from January 1, 2018. The significant effects of applying the new standards as of January 1, 2018 are summarized below: (a) Financial assets at fair value through other comprehensive income In accordance with IFRS 9, an entity at its sole option may irrevocably designate an investment in an equity instrument not held for dealing or trading purpose at initial recognition as financial assets at fair value through other comprehensive income. The Group expects to reclassify available-for-sale (b) Financial assets at fair value through profit or loss In accordance with IFRS 9, the Group expects to reclassify available-for-sale (c) Provision for impairment In line with the regulations under IFRS 9 on provision for impairment based on the expected credit loss model, as of January 1, 2018, contract assets will be decreased by NT$115 thousand (US$4 thousand), accounts receivable decreased by NT$1,819 thousand (US$61 thousand), other receivables decreased by NT$5 thousand (US$169), other receivables – related parties decreased by NT$2 thousand (US$67), and retained earnings decreased by NT$1,941 thousand (US$65 thousand). (d) Revenue recognition of customized products The Group provides high-integration and high-precision integrated circuits and related assembly and testing services based on the specifications as required by the customers. The revenue is recognized when the significant risks and rewards are transferred under existing accounting policies (refer to Note 2 u)), and the timing of recognition usually occurred upon service completion. Considering that the Group provides assembly and testing service to create or enhance a highly customized product and the customer controls the asset as it is created or enhanced, the revenue will be recognized over time based on the percentage of completion under IFRS 15. As of January 1, 2018, using the modified retrospective approach, the Group also elects the use of practical expedient to only account for incomplete contracts at the date of initial application. Hence all the work in process and finished goods accounted in inventories will be transferred to retained earnings and contract assets will be recognized. As a result, retained earnings will be increased by NT$46,607 thousand (US$1,572 thousand), inventory decreased by NT$208,505 thousand (US$7,035 thousand) and contract assets increased by NT$255,112 thousand (US$8,607 thousand). (e) Presentation of contract assets and contract liabilities In line with IFRS 15 requirements, the Group’s liabilities in relation to sales discounts to customers are recognized as contract liabilities, but were previously presented as current provisions on the consolidated statement of financial position. As of January 1, 2018, the balance is NT$70,156 thousand (US$2,367 thousand). (f) Recognition of deferred tax When initially adopting IFRS 9 and IFRS 15, the Group will have to recognize adjustments on the consolidated statement of financial position which would result to temporary differences. Accordingly, as of January 1, 2018, deferred tax assets will be decreased by NT$736 thousand (US$25 thousand) and deferred tax liabilities increased by NT$19,651 thousand (US$663 thousand). Other Amendments to IFRSs not listed above are not expected to have a material impact on the entity in the current or future reporting periods and on foreseeable future transactions. |
Basis of consolidation | d) Basis of consolidation The consolidated financial statements include the accounts of ChipMOS Taiwan and all entities controlled by ChipMOS Taiwan. The financial statements of subsidiaries are prepared for the same reporting period as the Company, using consistent accounting policies. The results of subsidiaries are consolidated from the date on which the Group obtains control, and continue to be consolidated until the date that such control ceases. Profit or loss and each component of other comprehensive income are attributed to the owners of the parent of the Group and to the non-controlling non-controlling The Group reassesses whether or not it controls an investee if facts and circumstances indicate that there are changes to one or more of the three elements of control described in the accounting policy for subsidiaries below. Changes in the Group’s ownership interests in subsidiaries that do not result in the Group losing control over the subsidiaries are accounted for as equity transactions. The carrying amounts of the Group’s interests and the non-controlling non-controlling When the Group loses control of a subsidiary, the profit or loss on disposal is calculated as the difference between (i) the aggregate of the fair value of the consideration received and the fair value of any investment retained and (ii) the previous carrying amount of the assets (including goodwill), and liabilities of the subsidiary and any non-controlling Subsidiaries included in the consolidated financial statements: Percentage of Ownership (%) December 31, Name of investor Name of investee Main businesses Location 2016 2017 Note The Company ChipMOS U.S.A., Inc. (“ChipMOS USA”) Research, development and marketing of semiconductors, circuits, and electronic related products San Jose, USA 100 100 The Company ChipMOS BVI Holding company British Virgin Islands 100 100 ChipMOS BVI ChipMOS Shanghai Semiconductor assembling and testing services People’s Republic of China (“PRC”) 100 — * * On November 30, 2016, the Company’s Board of Directors approved ChipMOS BVI’s disposal of 54.98% shareholding of its subsidiary, ChipMOS Shanghai. The transaction was completed in March 2017, thereafter, ChipMOS Shanghai was excluded from the consolidated financial statements and recorded as “Investment in associates”. Detailed information is provided in Note 13. |
Significant judgments and estimates | e) Significant judgments and estimates The preparation of consolidated financial statements requires management to make judgments, estimates and assumptions that affect the recorded amounts of assets, liabilities, revenue and expenses of the Group. The Group continually evaluates these estimates, including those related to share-based payments, impairment of receivables, impairment of non-financial The estimates and underlying assumptions are reviewed on an ongoing basis. Revisions to accounting estimates are recognized in the period in which the estimate is revised if the revision affects only that periods, or in the period of the revision and future periods if the revision affects both current and future periods. Management has considered the development, selection and disclosure of the Group’s critical accounting policies and estimates. Judgments In the process of applying the Group’s accounting policies, management has made the following judgments which have the most significant effect on the amounts recognized in the consolidated financial statements: Provisions deficiency compensation The Group is primarily providing high-integration and high-precision integrated circuit of the packaging and testing services. In cases of deficiencies in the assembly and testing services provided, the Group has to clarify the reason for deficiencies and attribution of responsibility. The Group follows the guidance of IAS 37 “Provisions, Contingent Liabilities and Contingent Assets” to determine provisions for deficiency compensation. Since the timing and amount of these provisions are based on assumptions and estimates it requires management to make critical judgments. Estimates and assumptions Revenue recognition The Group estimates sales discounts and returns based on historical results and other known factors. Provisions for such liabilities are recorded as a deduction item to sales revenues when the sales are recognized. The Group reassesses the reasonableness of estimates of discounts and returns periodically. Causes and effects of accounting change By considering the Group’s experience on using similar property, plant and equipment in prior periods as well as by referring to the experience from peer industry, on November 10, 2016, the Board of Directors approved to change the estimated useful lives of certain properties from 11 years to 16 years and certain equipment from 2~6 years to 2~8 years effectively from November 1, 2016, in order to better reflect economic benefits from usage of those properties and equipment. The impact on depreciation expenses of current and future periods were expected as follows: 2016 2017 2018 2019 NT$000 NT$000 NT$000 NT$000 Decrease in depreciation expenses (119,737 ) (605,259 ) (389,972 ) (164,824 ) |
Property, plant and equipment and depreciation | f) Property, plant and equipment and depreciation Property, plant and equipment are stated at cost, less provision for depreciation and impairment losses, if any. The cost of an item of property, plant and equipment comprises its purchase price and any directly attributable cost of bringing the asset to its working condition and location for its intended use. Expenditure incurred after the item has been put into operation, such as repairs and maintenance and overhaul costs, is normally charged to the consolidated statements of comprehensive income in the year in which it is incurred. In situations where it can be clearly demonstrated that the expenditure has resulted in an increase in future economic benefits expected to be obtained from the use of the item, the expenditure is capitalized as an additional cost of the item. When an item of property, plant and equipment is disposed of or retired, its cost and accumulated depreciation are removed from the financial statements and any gain or loss resulting from the disposal or retirement, being the difference between the net proceeds and the carrying amount of the asset, is included in consolidated statements of comprehensive income. Depreciation is provided on the straight-line method, based on the estimated useful life of the individual assets, as follows: Buildings 6 to 51 years Machinery and equipment 2 to 8 years Tools 2 to 3 years Other equipment 2 to 6 years Where parts of an item of property, plant and equipment have different useful lives, the cost of that item is allocated on a reasonable basis among the parts and each part is depreciated separately. Residual values, useful lives and the depreciation method are reviewed, and adjusted if appropriate, at least at each financial year end. An item of property, plant and equipment including any significant part initially recognized is derecognized upon disposal or when no future economic benefits are expected from its use or disposal. Any gain or loss on disposal or retirement recognized in the consolidated statements of comprehensive income in the year the asset is derecognized is the difference between the net sales proceeds and the carrying amount of the relevant asset. |
Impairment of non-financial assets | g) Impairment of non-financial Where an indication of impairment exists, or when periodical impairment testing for an asset is required (other than inventories, deferred tax assets and financial assets), the recoverable amount of the asset is estimated. An asset’s recoverable amount is the higher of the value in use of the asset or cash-generating unit to which it belongs and its fair value less costs to sell, and is determined for an individual asset, unless the asset does not generate cash inflows that are largely independent of those from other assets or groups of assets, in which case the recoverable amount is determined for the cash-generating unit to which the asset belongs. An impairment loss is recognized only if the carrying amount of an asset exceeds its recoverable amount. In assessing value in use, the estimated future cash flows are discounted to their present value using a pre-tax An assessment is made at the end of each reporting period as to whether there is any indication that previously recognized impairment losses may no longer exist or may have decreased. If such indication exists, the recoverable amount is estimated. A previously recognized impairment loss of an asset is reversed only if there has been a change in the estimates used to determine the recoverable amount of that asset, but not to an amount higher than the carrying amount that would have been determined (net of any depreciation), had no impairment loss been recognized for the asset in prior years. A reversal of such impairment loss is credited to the consolidated statements of comprehensive income in the period in which it arises. |
Inventories | h) Inventories Inventories are stated at the lower of cost and net realizable value. Cost is determined on a weighted average cost basis and includes all costs of purchase, costs of conversion, and other costs incurred in bringing the inventories to their present location and condition. Net realizable value is the estimated selling price in the ordinary course of business less the estimated costs of completion and the estimated costs necessary to make the sale. When inventories are consumed, the carrying amount of those inventories is recognized as cost of revenue in the period in which the related revenue is recognized. The amount of any write-down of inventories to net realizable value and all losses of inventories are recognized as cost of revenue in the period the write-down or loss occurs. The amount of any reversal of any write-down of inventories is recognized as a reduction in the amount of inventories recognized as cost of revenue in the period in which the reversal occurs. |
Non-current assets held for sale | i) Non-current Non-current |
Investments and other financial assets | j) Investments and other financial assets Initial recognition and measurement The Group’s financial assets are classified, at initial recognition, into financial assets at fair value through profit or loss (“FVTPL”), loans and receivables and available-for-sale All regular way purchases or sales of financial assets are recognized on the settlement date, that is, the date that the Group completes the purchase or sell of the asset. Regular way purchases or sales are purchases or sales of financial assets that require delivery of assets within the time frame established by regulation or convention in the marketplace. Effective interest method The effective interest method is a method of calculating the amortized cost of loans and receivables and a debt instrument and of allocating interest income over the relevant period. The effective interest rate is the rate that exactly discounts estimated future cash receipts (including all fees on points paid or received that form an integral part of the effective interest rate, transaction costs and other premiums or discounts) through the expected life of the debt instrument, or, where appropriate, a shorter period. Income is recognized on an effective interest basis for debt instruments. Subsequent measurement The subsequent measurement of financial assets depends on their classification as follows: Financial assets at fair value through profit or loss Financial assets at FVTPL include financial assets held for trading and those designated as at FVTPL upon initial recognition. A financial asset is classified as held for trading, mainly for cash management purpose as part of operating activities, if it has been acquired principally for the purpose of selling in the near future; or it is a part of an identified portfolio of financial instruments that the Group manages together and has a recent actual pattern of short-term profit-taking; or it is a derivative that is not designated and effective as a hedging instrument. A financial asset other than a financial asset held for trading may be designated as at FVTPL upon initial recognition if: • such designation eliminates or significantly reduces a measurement or recognition inconsistency that would otherwise arise; or • the financial asset forms part of a group of financial assets or financial liabilities or both, which is managed and its performance is evaluated on fair value basis, in accordance with the Group’s documented risk management or investment strategy, and information about the grouping is provided internally on that basis; or • it forms part of a contract containing one or more embedded derivatives, and IAS 39 “Financial Instruments: Recognition and Measurement” permits the entire combined contract (asset or liability) to be designated as at FVTPL. There were no financial assets at FVTPL at the end of the reporting periods. Loans and receivables Loans and receivables are non-derivative Available-for-sale Available-for-sale non-derivative When the fair value of unlisted equity investments cannot be reliably measured because (a) the variability in the range of reasonable fair value estimates is significant for that investment or (b) the probabilities of the various estimates within the range cannot be reasonably assessed and used in estimating fair value, such investments are stated at cost less any impairment losses. The Group evaluates whether the ability and intention to sell its available-for-sale |
Impairment of financial assets | k) Impairment of financial assets The Group assesses at the end of each reporting period whether there is objective evidence that a financial asset or a group of financial assets is impaired. An impairment exists if one or more events that occurred after the initial recognition of the asset have an impact on the estimated future cash flows of the financial asset or the group of financial assets that can be reliably estimated. Evidence of impairment may include indications that a debtor or a group of debtors is experiencing significant financial difficulty, default or delinquency in interest or principal payments, the probability that they will enter bankruptcy or other financial reorganization and observable data indicating that there is a measurable decrease in the estimated future cash flows, such as changes in arrears or economic conditions that correlate with defaults. Financial assets carried at amortized cost For financial assets carried at amortized cost, the Group first assesses whether impairment exists individually for financial assets that are individually significant, or collectively for financial assets that are not individually significant. If the Group determines that no objective evidence of impairment exists for an individually assessed financial asset, whether significant or not, it includes the asset in a group of financial assets with similar credit risk characteristics and collectively assesses them for impairment. Assets that are individually assessed for impairment and for which an impairment loss is, or continues to be, recognized are not included in a collective assessment of impairment. The amount of any impairment loss identified is measured as the difference between the asset’s carrying amount and the present value of estimated future cash flows (excluding future credit losses that have not yet been incurred). The present value of the estimated future cash flows is discounted at the financial asset’s original effective interest rate (i.e., the effective interest rate computed at initial recognition). The carrying amount of the asset is reduced through the use of an allowance account and the loss is recognized in the consolidated statements of comprehensive income. Interest income continues to be accrued on the reduced carrying amount and is accrued using the rate of interest used to discount the future cash flows for the purpose of measuring the impairment loss. Loans and receivables together with any associated allowance are written off when there is no realistic prospect of future recovery and all collateral has been realized or has been transferred to the Group. If, in a subsequent period, the amount of the estimated impairment loss increases or decreases because of an event occurring after the impairment was recognized, the previously recognized impairment loss is increased or reduced by adjusting the allowance account. If a write-off Available-for-sale The amount of the impairment loss is measured as the difference between the asset’s acquisition cost (less any principal repayment and amortization) and current fair value, less any impairment loss on that financial asset previously recognized in profit or loss, and is reclassified from “other comprehensive income” to “profit or loss”. If, in a subsequent period, the fair value of an investment in a debt instrument increases, and the increase can be related objectively to an event occurring after the impairment loss was recognized, then such impairment loss is reversed through profit or loss. Impairment loss of an investment in an equity instrument recognized in profit or loss shall not be reversed through profit or loss. Impairment loss is recognized and reversed by adjusting the carrying amount of the asset directly. |
Derecognition of financial assets | l) Derecognition of financial assets A financial asset (or, where applicable, a part of a financial asset or part of a group of similar financial assets) is primarily derecognized (i.e., removed from the Group’s consolidated statement of financial position) when: • the rights to receive cash flows from the asset have expired; or • the Group has transferred its rights to receive cash flows from the asset or has assumed an obligation to pay the received cash flows in full without material delay to a third party under a “pass-through” arrangement; and either (a) the Group has transferred substantially all the risks and rewards of the asset, or (b) the Group has neither transferred nor retained substantially all the risks and rewards of the asset, but has transferred control of the asset. When the Group has transferred its rights to receive cash flows from an asset or has entered into a pass-through arrangement, it evaluates if and to what extent it has retained the risk and rewards of ownership of the asset. When it has neither transferred nor retained substantially all the risks and rewards of the asset nor transferred control of the asset, the Group continues to recognize the transferred asset to the extent of the Group’s continuing involvement. In that case, the Group also recognizes an associated liability. The transferred asset and the associated liability are measured on a basis that reflects the rights and obligations that the Group has retained. Continuing involvement that takes the form of a guarantee over the transferred asset is measured at the lower of the original carrying amount of the asset and the maximum amount of consideration that the Group could be required to repay. |
Investments in associates | m) Investments in associates The Group’s investments in associates are accounted for using the equity method. An associate is an entity over which the Group has significant influence and that is neither a subsidiary nor a joint venture. Significant influence is the power to participate in the financial and operating policy decisions of an entity, but is not control or joint control over those policies. Any difference between the acquisition cost and the Group’s share of the net fair value of the identifiable assets and liabilities of associates is accounted for as follows: (a) Any excess of the acquisition cost over the Group’s share of the net fair value of the identifiable assets and liabilities of an associate at the date of acquisition is recognized as goodwill and is included in the carrying amount of the investment. Amortization of goodwill is not permitted. (b) Any excess of the Group’s share of the net fair value of the identifiable assets and liabilities of an associate over the acquisition cost, after reassessing the fair value, is recognized as a gain in profit or loss on the acquisition date. Under the equity method, the investments in associates are carried on the statements of financial position at cost plus post acquisition changes in the Group’s share of profit or loss and other comprehensive income of associates. The Group’s share of changes in associates’ profit or loss and other comprehensive income are recognized directly in profit or loss and other comprehensive income, respectively, of the Group. Distributions received from an associate reduce the carrying amount of the investment. Any unrealized gains and losses resulting from transactions between the Group and the associate are eliminated to the extent of the Group’s interest in the associate. Upon an associate’s issuance of new shares, if the Group takes up more shares than its original proportionate holding while maintaining its significant influence over that associate, such increase would be accounted for as an acquisition of an additional equity interest in the associate. Upon an associate’s issuance of new shares, if the Group does not take up proportionate shares and reduces its shareholding while maintaining its significant influence over that associate, the Group will treat the transaction as deemed disposal and reclassify to profit or loss the proportion of the gain or loss previously recognized in other comprehensive income relating to that reduction in ownership interest where appropriate. The Group ceases to use the equity method upon loss of significant influence over an associate. Any difference between the carrying amount of the investment in an associate upon loss of significant influence and the fair value of the retained investment plus proceeds from disposal will be recognized in profit or loss. The Group determines at each reporting date whether there is any objective evidence that the investments in associates are impaired. An impairment loss, being the difference between the recoverable amount of the associate and its carrying value, is recognized in profit or loss in the consolidated statements of comprehensive income and forms part of the carrying amount of the investments. |
Financial liabilities | n) Financial liabilities Initial recognition and measurement Financial liabilities are classified, at initial recognition, as financial liabilities at fair value through profit or loss, loans and borrowings, or as derivatives designated as hedging instruments in an effective hedge, as appropriate. All financial liabilities are recognized initially at fair value and, in the case of loans and borrowings, net of directly attributable transaction costs. The Group’s financial liabilities include bank loans, accounts payable and other monetary liabilities. Subsequent measurement The subsequent measurement of financial liabilities depends on their classification as follows: Loans and borrowings After initial recognition, interest-bearing loans and borrowings are subsequently measured at amortized cost, using the effective interest rate method unless the effect of discounting would be immaterial, in which case they are stated at cost. Gains and losses are recognized in the consolidated statements of comprehensive income when the liabilities are derecognized through the effective interest rate amortization process. Amortized cost is calculated by taking into account any discount or premium on acquisition and fees or costs that are an integral part of the effective interest rate. The effective interest rate amortization is included in finance costs in the consolidated statements of comprehensive income. Notes and accounts payable Notes and accounts payable are obligations to pay for goods or services that have been acquired in the ordinary course of business from suppliers. They are recognized initially at fair value and subsequently measured at amortized cost using the effective interest method. However, short-term accounts payable without bearing interest are subsequently measured at initial invoice amount as the effect of discounting is immaterial. |
Derecognition of financial liabilities | o) Derecognition of financial liabilities A financial liability is derecognized when the obligation under the liability is discharged or cancelled, or expired. When an existing financial liability is replaced by another from the same lender on substantially different terms, or the terms of an existing liability are substantially modified, such an exchange or modification is treated as a derecognition of the original liability and a recognition of a new liability, and the difference between the respective carrying amounts is recognized in the consolidated statements of comprehensive income. |
Dividends | p) Dividends Dividends are recommended by the Board of Directors to the Shareholders’ approval pursuant to the Company’s Article of Incorporation. |
Operating lease charges | q) Operating lease charges Where the Group has the use of assets held under operating leases, payments made under the leases are charged to the consolidated statements of comprehensive income in equal installments over the accounting periods covered by the lease term, except where an alternative basis is more representative of the pattern of benefits to be derived from the leased assets. Lease incentives received are recognized in the consolidated statements of comprehensive income as an integral part of the aggregate net lease payments made. Contingent rentals, if any, are charged to the consolidated statements of comprehensive income in the accounting period in which they are incurred. |
Treasury stock | r) Treasury stock Treasury stock is stated at cost and shown as a deduction in equity. When the Company retires treasury stock, the treasury stock account is reduced and the share capital as well as the capital surplus – share premium are reversed on a pro rata basis. When the book value of the treasury stock exceeds the sum of par value and share premium, the difference is charged to respective capital surplus and to retained earnings for any remaining amount. The Company’s stock held by its subsidiary is treated as treasury stock. |
Provisions | s) Provisions A provision is recognized when a present obligation (legal or constructive) has arisen as a result of a past event and it is probable that a future outflow of resources will be required to settle the obligation, provided that a reliable estimate can be made of the amount of the obligation. When the effect of discounting is material, the amount recognized for a provision is the present value at the end of the reporting period of the future expenditures expected to be required to settle the obligation. The increase in the discounted present value amount arising from the passage of time is included in finance costs in the consolidated statements of comprehensive income. |
Foreign currency translation | t) Foreign currency translation The consolidated financial statements are presented in New Taiwan dollars, which is the Company’s functional currency. Each entity in the Group determines its own functional currency and items included in the financial statements of each entity are measured using that functional currency. Foreign currency transactions are initially recorded using the functional currency rates ruling at the date of the transactions. Monetary assets and liabilities denominated in foreign currencies are retranslated at the functional currency rates of exchange ruling at the end of the reporting period. All differences are taken to profit or loss. Non-monetary Non-monetary The resulting exchange differences are recorded in other comprehensive income and the cumulative balance is included in foreign currency translation reserve in the consolidated statements of changes in equity. On disposal of a foreign entity, the deferred cumulative amount recognized in foreign currency translation reserve relating to that particular foreign operation is recognized in the consolidated statements of comprehensive income. For the purpose of the consolidated statements of cash flows, the cash flows of overseas subsidiaries are translated into New Taiwan dollars at the exchange rates ruling at the dates of the cash flows. Frequently recurring cash flows of overseas subsidiaries which arise throughout the year are translated into New Taiwan dollars at the weighted average exchange rates for the year. |
Revenue recognition | u) Revenue recognition Revenue is recognized to the extent that it is probable that the economic benefits arising in the course of business will flow to the Group and the revenue can be reliably measured, regardless of when the payment is being made. Revenue is measured at the fair value of the consideration received or receivable, taking into account contractually defined terms of payment and excluding taxes or duty. The Group engaged in the research, development, manufacturing and sale of high-integration and high-precision integrated circuits and related assembly and testing services. The criteria that the Group uses to determine when to recognize revenue are: (a) the Group has transferred to the buyer the significant risks and rewards of ownership of the goods; (b) the Group retains neither continuing managerial involvement to the degree usually associated with ownership nor effective control over the goods sold; (c) the amount of revenue can be measured reliably; (d) it is probable that the economic benefits associated with the transaction will flow to the Group ; (e) the stage of completion of the transaction at the end of the reporting period can be measured reliably, and (f) the costs incurred for the transaction and the costs to complete the transaction can be measured reliably. The Group does not take ownership of: (1) bare semiconductor wafers received from customers that are assembled into finished semiconductors, and (2) assembled semiconductors received from the customers that it tests. The title and risk of loss remains with the customer for those bare semiconductors and/or assembled semiconductors. Accordingly, the customer-supplied semiconductor materials are not included in the consolidated financial statements. The Group does not provide warranties to customers except in cases of defects in the assembly services provided and deficiencies in testing services provided. An appropriate sales allowance is recognized in the period during which the sale is recognized, and is estimated based on historical experience. Interest income Interest income is recognized on an accrual basis using the effective interest method by applying the rate that discounts the estimated future cash receipts through the expected life of the financial instrument to the net carrying amount of the financial asset. |
Research and development costs | v) Research and development costs Research and development costs that do not meet the criteria of internally generated intangible assets of IAS 38 “Intangible Assets” are expensed in the period in which it is incurred. |
Borrowing costs | w) Borrowing costs Borrowing costs directly attributable to the acquisition, construction or production of qualifying assets, which are assets that necessarily take a substantial period of time to get ready for their intended use or sale, are added to the cost of those assets, until such time as the assets are substantially ready for their intended use or sale. All other borrowing costs are charged to the consolidated statements of comprehensive income in the period in which they are incurred. |
Pension and other post-employment benefits | x) Pension and other post-employment benefits The Group operates defined contribution and defined benefit plans in the ROC and PRC. For defined contribution retirement benefit plans, payments to the benefit plan are recognized as an expense when the employees have rendered service entitling them to the contribution. For defined benefit retirement plans, the cost of providing benefit is recognized based on actuarial calculations. For defined benefit retirement benefit plans, the cost of providing benefits is determined using the Projected Unit Credit Method, with actuarial valuations being carried out at the year end. Remeasurements are recognized in other comprehensive income in the period which they incur. Past service costs are recognized in the consolidated statements of comprehensive income on the earlier of the date of the plan amendment or curtailment, and the date that the Group recognizes restructuring-related costs. Net interest is calculated by applying the discount rate to the net defined benefit liability or asset. The Group recognizes i) service costs comprising current service costs, past service costs, gains and losses on curtailments and non-routine Employee entitlements to annual leave are recognized when they accrue to employees. An accrual is made for the estimated liability for annual leave as a result of services rendered by employees up to the end of the reporting period. |
Share-based payments | y) Share-based payments Employees of the Group receive remuneration in the form of share-based payments, whereby employees render services as consideration for equity instruments (equity-settled transactions) or share appreciation rights, which are settled in cash (cash-settled transactions). Equity-settled transactions The cost of equity-settled transactions is determined by the fair value at the date when the grant is made using an appropriate valuation model. That cost is recognized, together with a corresponding increase in capital surplus in equity, over the period in which the performance and/or service conditions are fulfilled in employee benefit expenses. The cumulative expense recognized for equity-settled transactions at each reporting date until the vesting date reflects the extent to which the vesting period has expired and the Group’s best estimate of the number of equity instruments that will ultimately vest. When the terms of an equity-settled award are modified, as a minimum, the services received measured at the grant date, fair value of the equity instruments granted should be recognized, unless those equity instruments do not vest because of failure to satisfy a vesting condition (other than a market condition) that was specified at grant date. An additional expense is recognized for any modification that increases the total fair value of the share-based payment transaction, or is otherwise beneficial to the employee as measured at the date of modification. Where an equity-settled award is cancelled, it is treated as if it had vested on the date of cancellation, and any expense not yet recognized for the award is recognized immediately. This includes any award where non-vesting Cash-settled transactions The cost of cash-settled transactions is measured initially at fair value at the grant date using an appropriate valuation model. This fair value is expensed over the period until the vesting date with recognition of a corresponding liability. The liability is re-measured Restricted shares Restricted shares issued to employees are measured at the fair value of the equity instruments granted at the grant date, and are recognized as compensation cost over the vesting period. For restricted shares where those shares do not restrict distribution of dividends to employees and employees are not required to return the dividends received if they resign during the vesting period, the Group recognizes the fair value of the dividends received by the employees who are expected to resign during the vesting period as compensation cost at the date of dividends declared. For restricted shares where employees do not need to pay to acquire those shares, if the employees who resign during the vesting period, the Group will recover and retire those shares at no cost. |
Income tax | z) Income tax Income tax represents the sum of current and deferred tax. Income tax relating to items recognized outside profit or loss is recognized outside profit or loss, either in other comprehensive income or directly in equity. Current tax assets and liabilities are measured at the amount expected to be recovered from or paid to the taxation authorities, based on tax rates (and tax laws) that have been enacted or substantively enacted by the end of the reporting period, taking into consideration interpretations and practices prevailing in the countries in which the Group operates. Deferred tax is provided, using the liability method, on all temporary differences at the end of the reporting period between the tax bases of assets and liabilities and their carrying amounts for financial reporting purposes. Deferred tax liabilities are recognized for all taxable temporary differences, except: • when the deferred tax liability arises from the initial recognition of goodwill or an asset or liability in a transaction that is not a business combination and, at the time of the transaction, affects neither the accounting profit nor taxable profit or loss; and • in respect of taxable temporary differences associated with investments in subsidiaries, associates and joint ventures, when the timing of the reversal of the temporary differences can be controlled and it is probable that the temporary differences will not reverse in the foreseeable future. Deferred tax assets are recognized for all deductible temporary differences, the carryforward of unused tax credits and any unused tax losses. Deferred tax assets are recognized to the extent that it is probable that taxable profits will be available against which deductible temporary differences, the carryforward of unused tax credits and unused tax losses can be utilized, except: • when the deferred tax asset relating to the deductible temporary differences arises from the initial recognition of an asset or liability in a transaction that is not a business combination and, at the time of the transaction, affects neither the accounting profit nor taxable profit or loss; and • in respect of deductible temporary differences associated with investments in subsidiaries, associates and joint ventures, deferred tax assets are only recognized to the extent that it is probable that the temporary differences will reverse in the foreseeable future and taxable profit will be available against which the temporary differences can be utilized. The carrying amount of deferred tax assets is reviewed at the end of each reporting period and reduced to the extent that it is no longer probable that sufficient taxable profit will be available to allow all or part of the deferred tax asset to be utilized. Unrecognized deferred tax assets are reassessed at the end of each reporting period and are recognized to the extent that it has become probable that sufficient taxable profit will be available to allow all or part of the deferred tax asset to be recovered. Deferred tax is calculated, without discounting, at the tax rates that are expected to apply in the period when the asset is realized or the liability is settled, based on the tax rates (and tax laws) that have been enacted or substantively enacted by the end of the reporting period. Current income tax assets and liabilities are offset and the net amount reported in the statements of financial position when there is a legally enforceable right to offset the recognized amounts and there is an intention to settle on a net basis or realize the asset and settle the liability simultaneously. |
Cash and cash equivalents | aa) Cash and cash equivalents Cash and cash equivalents comprise cash on hand and demand deposits, and short-term highly liquid investments which are readily convertible into known amounts of cash, are subject to an insignificant risk of changes in value, and have a short maturity of generally within three months when acquired. |
Related parties | bb) Related parties (a) A person, or a close member of that person’s family, is related to the Group if that person: (i) has control or joint control over the Group; (ii) has significant influence over the Group; or (iii) is a member of key management personnel of the Group or the Group’s parent. or (b) An entity is related to the Group if any of the following conditions applies: (i) The entity and the Group are members of the same group. (ii) One entity is an associate or joint venture of the other entity (or an associate or joint venture of a member of a group of which the other entity is a member). (iii) The entity and the Group are joint ventures of the same third party. (iv) One entity is a joint venture of a third entity and the other entity is an associate of the third entity. (v) The entity is a post-employment benefit plan for the benefit of employees of either the Group or an entity related to the Group. (vi) The entity is controlled or jointly controlled by a person identified in (a). (vii) A person identified in (a)(i) has significant influence over the entity or is a member of the key management personnel of the entity (or of a parent of the entity). |
Subsidiaries | cc) Subsidiaries A subsidiary is an entity (including a structured entity) controlled by the Company. Control is achieved when the Group is exposed, or has rights, to variable returns from its involvement with the investee and has the ability to affect those returns through its power over the investee (i.e., existing rights that give the Group the current ability to direct the relevant activities of the investee). When the Company has, directly or indirectly, less than a majority of the voting or similar rights of an investee, the Group considers all relevant facts and circumstances in assessing whether it has power over an investee, including: • the contractual arrangement with the other vote holders of the investee; • rights arising from other contractual arrangements; and • the Group’s voting rights and potential voting rights The Company’s share of its subsidiaries’ post-acquisition profits or losses is recognized in profit or loss, and its share of post-acquisition movements in other comprehensive income is recognized in other comprehensive income. When the Company’s share of losses in a subsidiary equals or exceeds its interest in the subsidiary, the Company continues to recognize its share in the subsidiary’s loss proportionately. Changes in a parent’s ownership interest in a subsidiary that do not result in the parent losing control of the subsidiary (transactions with non-controlling non-controlling |
Fair value measurement | dd) Fair value measurement The Group measures its accrued pension cost at fair value at the end of each reporting period. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value measurement is based on the presumption that the transaction to sell the asset or transfer the liability takes place either in the principal market for the asset or liability, or in the absence of a principal market, in the most advantageous market for the asset or liability. The principal or the most advantageous market must be accessible by the Group. The fair value of an asset or a liability is measured using the assumptions that market participants would use when pricing the asset or liability, assuming that market participants act in their economic best interest. A fair value measurement of a non-financial The Group uses valuation techniques that are appropriate in the circumstances and for which sufficient data are available to measure fair value, maximizing the use of relevant observable inputs and minimizing the use of unobservable inputs. All assets and liabilities for which fair value is measured or disclosed in the financial statements are categorized within the fair value hierarchy, described as follows, based on the lowest level input that is significant to the fair value measurement as a whole: Level 1 – based on quoted prices (unadjusted) in active markets for identical assets or liabilities Level 2 – based on valuation techniques for which the lowest level input that is significant to the fair value measurement is observable, either directly or indirectly Level 3 – based on valuation techniques for which the lowest level input that is significant to the fair value measurement is unobservable For assets and liabilities that are recognized in the financial statements on a recurring basis, the Group determines whether transfers have occurred between levels in the hierarchy by reassessing categorization (based on the lowest level input that is significant to the fair value measurement as a whole) at the end of each reporting period. |
Capital reorganization | ee) Capital reorganization The Company merged with ChipMOS Bermuda on October 31, 2016 and the transaction was accounted as capital reorganization within the Group. When presenting comparative financial statements, the Company presented it as if ChipMOS Bermuda had always been combined and the financial statements were restated retrospectively. The assets and liabilities acquired from ChipMOS Bermuda was measured by using book value method, and any differences between the consideration given by the Company and the aggregate book value of the assets and liabilities of ChipMOS Bermuda was first accounted for as addition (deduction) in capital surplus arises from share premium, if the share premium is insufficient, the amount will be accounted for as deduction from retained earnings. In addition, on the effective date of the Merger, the Company reclassified its shares originally held by ChipMOS Bermuda as treasury stock and cancelled those shares with deduction in share premium equal to the proportion of retired shares. If the share premium is insufficient, the amount will be accounted for as deduction from retained earnings. Transaction costs attributable to the Merger are accounted for as deduction from equity. When presenting comparative financial statements, the Company presented it as if ChipMOS Bermuda had always been combined and the financial statements were restated retrospectively. Net income attributable to ChipMOS Bermuda prior to the Merger were presented as “Predecessors’ interests”. |
Basis of preparation of finan45
Basis of preparation of financial statements and principal accounting policies (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Ownership Interests in Subsidiaries | Subsidiaries included in the consolidated financial statements: Percentage of Ownership (%) December 31, Name of investor Name of investee Main businesses Location 2016 2017 Note The Company ChipMOS U.S.A., Inc. (“ChipMOS USA”) Research, development and marketing of semiconductors, circuits, and electronic related products San Jose, USA 100 100 The Company ChipMOS BVI Holding company British Virgin Islands 100 100 ChipMOS BVI ChipMOS Shanghai Semiconductor assembling and testing services People’s Republic of China (“PRC”) 100 — * * On November 30, 2016, the Company’s Board of Directors approved ChipMOS BVI’s disposal of 54.98% shareholding of its subsidiary, ChipMOS Shanghai. The transaction was completed in March 2017, thereafter, ChipMOS Shanghai was excluded from the consolidated financial statements and recorded as “Investment in associates”. Detailed information is provided in Note 13. |
Impact on Depreciation Expenses of Current and Future Periods due to Change in Estimated Useful Lives of Certain Properties and Equipment | The impact on depreciation expenses of current and future periods were expected as follows: 2016 2017 2018 2019 NT$000 NT$000 NT$000 NT$000 Decrease in depreciation expenses (119,737 ) (605,259 ) (389,972 ) (164,824 ) |
Estimated Useful Life for Depreciation of Individual Assets | Depreciation is provided on the straight-line method, based on the estimated useful life of the individual assets, as follows: Buildings 6 to 51 years Machinery and equipment 2 to 8 years Tools 2 to 3 years Other equipment 2 to 6 years |
Segment Information (Tables)
Segment Information (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Financial Segment Information for Operating Segments | The Group uses operating profit (loss) as the measurement for segment profit (loss) and the basis of performance assessment. There was no material inconsistency between the accounting policies of the operating segment and the accounting policies described in Note 2. 2015 Testing Assembly LCDD Bumping Others Elimination Total Discontinued NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 Revenue External customers 4,546,394 5,525,582 5,396,001 3,369,112 — — 18,837,089 1,032,302 Inter-segment 172,264 528 — — 44,577 (217,369 ) — — Total revenue 4,718,658 5,526,110 5,396,001 3,369,112 44,577 (217,369 ) 18,837,089 1,032,302 Operating profit (loss) 1,203,169 117,127 1,354,398 28,605 (47,191 ) (7,681 ) 2,648,427 (61,214 ) Depreciation and amortization (646,545 ) (550,819 ) (1,157,809 ) (548,234 ) (357 ) 543 (2,903,221 ) (118,702 ) Interest income — — — — 60,552 (1,690 ) 58,862 9,421 Interest expense — — — — (128,311 ) 1,690 (126,621 ) (414 ) Share of profit of associates — — — — 25,346 5,923 31,269 — Purchase of property, plant and equipment 796,964 895,767 1,366,389 589,615 2,477 (6,652 ) 3,644,560 — 2016 Testing Assembly LCDD Bumping Others Elimination Total Discontinued NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 Revenue External customers 4,587,054 5,880,780 4,920,302 2,999,457 — — 18,387,593 1,005,166 Inter-segment — 1,103 — 510 41,670 (43,283 ) — — Total revenue 4,587,054 5,881,883 4,920,302 2,999,967 41,670 (43,283 ) 18,387,593 1,005,166 Operating profit (loss) 1,346,874 143,220 963,698 (341,356 ) (82,331 ) (31,530 ) 1,998,575 (146,263 ) Depreciation and amortization (664,026 ) (635,481 ) (1,167,908 ) (622,412 ) (565 ) 488 (3,089,904 ) (141,375 ) Interest income — — — — 51,756 (13,202 ) 38,554 3,753 Interest expense — — — — (144,545 ) — (144,545 ) (606 ) Share of profit (loss) of associates — — — — (128,866 ) 157,790 28,924 — Purchase of property, plant and equipment 771,500 554,162 910,457 887,144 49 — 3,123,312 1,567,683 2017 Testing Assembly LCDD Bumping Others Elimination Total Total Discontinued Discontinued NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 US$000 NT$000 US$000 Revenue External customers 4,838,246 5,259,281 4,789,869 3,053,459 — — 17,940,855 605,292 227,095 7,662 Inter-segment — — 247 — 35,808 (36,055 ) — — — — Total revenue 4,838,246 5,259,281 4,790,116 3,053,459 35,808 (36,055 ) 17,940,855 605,292 227,095 7,662 Operating profit (loss) 1,448,939 (55,198 ) 1,285,495 (336,123 ) (100,545 ) (2,687 ) 2,239,881 75,570 (25,394 ) (857 ) Depreciation and amortization (673,393 ) (597,500 ) (1,048,587 ) (579,605 ) (503 ) 310 (2,899,278 ) (97,816 ) — — Interest income — — — — 53,123 — 53,123 1,792 464 16 Interest expense — — — — (190,425 ) — (190,425 ) (6,425 ) (2,414 ) (81 ) Share of profit (loss) of associates — — — — 1,347,851 (1,527,342 ) (179,491 ) (6,056 ) — — Purchase of property, plant and equipment 836,894 655,879 2,615,153 594,765 — — 4,702,691 158,660 — — |
Geographic Information of Revenue | Geographic information of revenue: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Area ROC 13,529,739 12,728,014 13,152,419 443,739 Japan 986,403 1,855,674 2,257,296 76,157 Singapore 2,928,591 3,087,835 1,798,585 60,681 Others 1,392,356 716,070 732,555 24,715 18,837,089 18,387,593 17,940,855 605,292 |
Net Revenue from Customers Representing at Least 10% of Total Revenue | Net revenue from customers representing at least 10% of the total revenue: 2015 2016 2017 2017 Amount % Amount % Amount % Amount NT$000 NT$000 NT$000 US$000 Customers Customer A 4,307,855 23 3,370,285 18 3,434,873 19 115,886 Customer K 2,386,975 13 2,633,431 14 2,742,882 15 92,540 Customer I 2,935,820 16 3,085,190 17 1,798,111 10 60,665 Customer C 1,761,049 9 1,870,675 10 1,530,209 9 51,626 The revenue generated from the above customers is mainly from the segments of Assembly and LCDD. |
Operating costs and expenses (T
Operating costs and expenses (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Analysis of income and expense [abstract] | |
Summary of Operating Costs and Expenses | 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Change of finished goods and work in process 7,899 (19,498 ) 31,977 1,079 Consumption of raw materials and supplies 3,271,581 3,346,540 3,036,350 102,441 Employee benefit expenses 5,358,962 5,317,125 5,895,778 198,913 Depreciation and amortization 2,903,221 3,089,904 2,899,278 97,816 Other expenses 4,752,050 4,745,253 4,530,425 152,848 Total operating costs and expenses 16,293,713 16,479,324 16,393,808 553,097 Employee benefit expenses Salaries 4,300,550 4,126,203 4,874,709 164,464 Labor and health insurance 355,331 351,232 390,788 13,184 Pension 179,665 183,293 198,502 6,697 Share-based payments 207,242 356,463 123,021 4,151 Other personnel expenses 316,174 299,934 308,758 10,417 5,358,962 5,317,125 5,895,778 198,913 |
Other operating income (expen48
Other operating income (expenses), net (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Other Operating Income (Expenses), Net | 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Gain on disposal of property, plant and equipment, net 1,562 2,575 132,777 4,480 Impairment on property, plant and equipment (1,460 ) (8,198 ) (956 ) (32 ) Gain on disposal of scrapped materials 31,870 30,476 27,940 943 Gain on disposal of items purchased on behalf of others 22,893 48,812 26,417 891 Royalty income — — 11,998 405 Insurance compensation income — 7,033 486,858 16,426 Others 50,186 9,608 7,800 262 105,051 90,306 692,834 23,375 |
Finance costs (Tables)
Finance costs (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Finance Costs | 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Interest on bank loans 146,003 157,254 208,486 7,034 Interest on lease payable — 212 708 24 Less: Amounts capitalized in qualifying assets (19,382 ) (12,921 ) (18,769 ) (633 ) 126,621 144,545 190,425 6,425 Finance expense 15,890 34,571 26,858 906 142,511 179,116 217,283 7,331 |
Other non-operating income (e50
Other non-operating income (expenses), net (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Other Non-operating Income (Expenses), Net | 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Interest income 58,862 38,554 53,123 1,792 Foreign exchange gains (losses), net 241,983 (195,326 ) (418,970 ) (14,135 ) Impairment of available-for-sale (8,584 ) — — — Gain on disposal of financial assets at fair value through profit or loss 11,483 621 637 22 Gain on disposal of long-term investment in associates — — 16,929 571 Share of profit (loss) of associates 31,269 28,924 (179,491 ) (6,056 ) Reimbursement of ADSs service charge — — 23,707 800 Others 5,127 8,203 13,883 468 340,140 (119,024 ) (490,182 ) (16,538 ) |
Income tax expense (Tables)
Income tax expense (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Major Components of Income Tax Expense | a) The major components of income tax expense for the years ended December 31, 2015, 2016 and 2017 are: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Current income tax: Current income tax on profits for the period 720,461 331,144 125,376 4,230 Income tax (benefit) on unappropriated retained earnings 198,157 (174,930 ) 246,684 8,322 Prior year income tax (over) under estimation (1,732 ) 4,527 67,885 2,290 Total current income tax 916,886 160,741 439,945 14,842 Deferred income tax: Relating to origination and reversal of temporary differences 18,969 16,379 110,542 3,730 Total deferred income tax 18,969 16,379 110,542 3,730 Income tax expense reported in the consolidated statements of comprehensive income 935,855 177,120 550,487 18,572 |
Deferred Tax Charged to Other Comprehensive Income | Deferred tax charged to other comprehensive income: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Remeasurement of defined benefit obligations (7,099 ) (7,375 ) 8,642 292 |
Reconciliation of Income Tax Expense and Accounting Profit Before Income Tax | b) Reconciliation of income tax expense and the accounting profit before income tax: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Tax calculated based on profit before tax and statutory tax rate 462,692 214,550 566,649 19,118 Expenses disallowed (added) by tax regulations 5,692 (2,190 ) 10,185 344 Temporary difference not recognized as deferred tax assets 6,522 1,306 (85,168 ) (2,873 ) Tax exempted (income) expenses by tax regulation (13,483 ) 12,057 (256,788 ) (8,664 ) Taxable loss not recognized as deferred tax assets 25,737 54,012 — — Effect of different tax rates in countries in which the Group operates 3,100 10,451 1,040 35 Withholding tax 249,170 57,337 — — Prior year income tax (over) under estimation (1,732 ) 4,527 67,885 2,290 Income tax (benefit) on unappropriated retained earnings 198,157 (174,930 ) 246,684 8,322 Income tax expense reported in the consolidated statements of comprehensive income 935,855 177,120 550,487 18,572 |
Details of Deferred Tax Assets (Liabilities) | c) The details of deferred tax assets (liabilities) are as follows: January 1, Profit and Other December 31, December 31, NT$000 NT$000 NT$000 NT$000 US$000 Year of 2016 Deferred tax assets Unrealized exchange losses (5,843 ) 5,843 — — Inventories 14,823 11,501 — 26,324 Property, plant and equipment 3,672 77,197 — 80,869 Deferred income 50,423 (9,129 ) — 41,294 Provisions 16,473 (5,241 ) — 11,232 Net defined benefit liability, non-current 86,719 (4,007 ) 7,375 90,087 Deferred tax assets 166,267 76,164 7,375 249,806 Deferred tax liabilities Unrealized exchange gains — (14,155 ) — (14,155 ) Property, plant and equipment — (78,388 ) — (78,388 ) Deferred tax liabilities — (92,543 ) — (92,543 ) Year of 2017 Deferred tax assets Unrealized exchange losses — 8,167 — 8,167 276 Inventories 26,324 (17,192 ) — 9,132 308 Property, plant and equipment 80,869 (25,375 ) — 55,494 1,872 Deferred income 41,294 (1,809 ) — 39,485 1,332 Provisions 11,232 10,411 — 21,643 730 Net defined benefit liability, non-current 90,087 (2,994 ) (8,642 ) 78,451 2,647 Deferred tax assets 249,806 (28,792 ) (8,642 ) 212,372 7,165 Deferred tax liabilities Unrealized exchange gains (14,155 ) 14,155 — — — Property, plant and equipment (78,388 ) (95,905 ) — (174,293 ) (5,880 ) Deferred tax liabilities (92,543 ) (81,750 ) — (174,293 ) (5,880 ) |
Earnings per share ("EPS") (Tab
Earnings per share ("EPS") (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Income and Share Data Used in Basic and Diluted EPS Computations | The following reflects the income and share data used in the basic and diluted EPS computations: 2015 Amount after income Weighted average Earnings per share Basic earnings per share NT$000 in thousands NT$ Profit (loss) attributable to: Equity holders of the Company - Continuing operations 2,164,557 2.47 - Discontinued operations (34,233 ) (0.04 ) Equity holders of the Company 2,130,324 2.43 Predecessors’ interests (291,429 ) (0.33 ) 1,838,895 877,402 2.10 Diluted earnings per share Employees’ bonuses 10,867 Restricted shares 27 Profit (loss) attributable to: Equity holders of the Company - Continuing operations 2,164,557 2.44 - Discontinued operations (34,233 ) (0.04 ) Equity holders of the Company 2,130,324 2.40 Predecessors’ interests (291,429 ) (0.33 ) 1,838,895 888,296 2.07 2016 Amount after income Weighted average Earnings per share Basic earnings per share NT$000 In thousands NT$ Profit (loss) attributable to: Equity holders of the Company - Continuing operations 1,829,327 2.13 - Discontinued operations (122,105 ) (0.14 ) Equity holders of the Company 1,707,222 1.99 Predecessors’ interests (306,012 ) (0.35 ) 1,401,210 859,644 1.64 Diluted earnings per share Employees’ bonuses 3,035 Restricted shares 4,122 Profit (loss) attributable to: Equity holders of the Company - Continuing operations 1,829,327 2.11 - Discontinued operations (122,105 ) (0.14 ) Equity holders of the Company 1,707,222 1.97 Predecessors’ interests (306,012 ) (0.35 ) 1,401,210 866,801 1.62 2017 Amount after income Weighted average Earnings per share Earnings per share Basic earnings per share NT$000 In thousands NT$ US$ Profit attributable to: Equity holders of the Company - Continuing operations 981,929 1.16 0.04 - Discontinued operations 1,814,953 2.14 0.07 2,796,882 846,686 3.30 0.11 Diluted earnings per share Employees’ bonuses 14,034 Restricted shares 5,075 Profit attributable to: Equity holders of the Company - Continuing operations 981,929 1.13 0.04 - Discontinued operations 1,814,953 2.10 0.07 2,796,882 865,795 3.23 0.11 * The weighted average number of shares takes into account the weighted average effect of changes in treasury stock transaction during the year. |
Available-for-sale financial 53
Available-for-sale financial assets (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Available-for-Sale Financial Assets | December 31, December 31, December 31, NT$000 NT$000 US$000 Unlisted equity investments, at cost 79,880 49,474 1,669 Less: Allowance for impairment losses (69,920 ) (28,584 ) (964 ) 9,960 20,890 705 |
Investment in associates (Table
Investment in associates (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Details of Investment in Associates | Details of investment in associates are as follows: Country of Measurement December 31, 2016 December 31, 2017 Investee company Carrying Ownership Carrying amount Ownership NT$000 % NT$000 US$000 % JMC ELECTRONICS CO., LTD. (“JMC”) Kaohsiung Equity 369,329 21.22 373,276 12,593 19.10 ChipMOS Shanghai Shanghai PRC Equity — — 3,060,056 103,241 45.02 |
Summarized Financial Information for Investment in Material Associates | The tables below provide summarized financial information for the investment in associates that are material to the Group. Statements of financial position JMC December 31, 2016 December 31, 2017 December 31, 2017 NT$000 NT$000 US$000 Current assets 904,571 833,914 28,134 Non-current 876,314 1,161,620 39,191 Current liabilities (258,513 ) (284,580 ) (9,601 ) Non-current (2,491 ) (1,756 ) (59 ) Total net assets 1,519,881 1,709,198 57,665 Group’s share 322,509 326,456 11,014 Goodwill 46,820 46,820 1,579 Carrying amount 369,329 373,276 12,593 Statements of financial position ChipMOS Shanghai December 31, 2017 December 31, 2017 NT$000 US$000 Current assets 3,380,641 114,056 Non-current 2,766,839 93,348 Current liabilities (460,054 ) (15,521 ) Non-current (489,097 ) (16,501 ) Total net assets 5,198,329 175,382 Group’s share 2,340,506 78,965 Depreciable assets 703,536 23,736 Goodwill 22,118 746 Inter-company transactions and amortization (6,104 ) (206 ) Carrying amount 3,060,056 103,241 Statements of comprehensive income JMC Year ended December 31, 2016 2017 2017 NT$000 NT$000 US$000 Revenue 1,667,761 1,322,928 44,633 Profit for the year from continuing operations 136,303 4,414 149 Other comprehensive income, net of income tax (627 ) 2,903 98 Total comprehensive income 135,676 7,317 247 Dividend received from the associate 5,730 14,325 483 ChipMOS Shanghai Year ended December 31, 2017 2017 NT$000 US$000 Revenue 1,141,415 38,509 Loss for the year from continuing operations (348,472 ) (11,757 ) Other comprehensive income, net of income tax — — Total comprehensive income (348,472 ) (11,757 ) Dividend received from the associate — — |
Property, plant and equipment55
Property, plant and equipment, net (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Property, Plant and Equipment, Net | Land Buildings Machinery Tools Other Construction in Total Total NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 US$000 January 1, 2016 Cost 452,738 10,700,236 45,945,380 3,673,636 3,047,001 826,103 64,645,094 Accumulated depreciation and impairment — (5,863,556 ) (38,602,675 ) (3,323,862 ) (2,643,441 ) — (50,433,534 ) 452,738 4,836,680 7,342,705 349,774 403,560 826,103 14,211,560 January 1, 2016 452,738 4,836,680 7,342,705 349,774 403,560 826,103 14,211,560 Additions — 255,916 934,913 358,413 351,850 2,789,903 4,690,995 Disposals — (51 ) (8,624 ) — (351 ) — (9,026 ) Reclassifications — 372,448 1,509,798 22,882 37,373 (1,942,501 ) — Depreciation expenses — (631,233 ) (2,188,976 ) (201,755 ) (206,477 ) — (3,228,441 ) Impairment losses — — — — (8,198 ) — (8,198 ) Exchange adjustments — (45,814 ) (18,196 ) (4,871 ) (11,134 ) (45,689 ) (125,704 ) December 31, 2016 452,738 4,787,946 7,571,620 524,443 566,623 1,627,816 15,531,186 December 31, 2016 Cost 452,738 11,183,278 47,002,228 3,999,894 3,353,413 1,627,816 67,619,367 Accumulated depreciation and impairment — (6,395,332 ) (39,430,608 ) (3,475,451 ) (2,786,790 ) — (52,088,181 ) 452,738 4,787,946 7,571,620 524,443 566,623 1,627,816 15,531,186 Less: Property, plant and equipment classified as held for sale — (710,191 ) (433,688 ) (90,460 ) (168,314 ) (631,315 ) (2,033,968 ) 452,738 4,077,755 7,137,932 433,983 398,309 996,501 13,497,218 January 1, 2017 Cost 452,738 11,183,278 47,002,228 3,999,894 3,353,413 1,627,816 67,619,367 2,281,355 Accumulated depreciation and impairment — (6,395,332 ) (39,430,608 ) (3,475,451 ) (2,786,790 ) — (52,088,181 ) (1,757,361 ) 452,738 4,787,946 7,571,620 524,443 566,623 1,627,816 15,531,186 523,994 Less: Property, plant and equipment classified as held for sale — (710,191 ) (433,688 ) (90,460 ) (168,314 ) (631,315 ) (2,033,968 ) (68,622 ) 452,738 4,077,755 7,137,932 433,983 398,309 996,501 13,497,218 455,372 January 1, 2017 452,738 4,077,755 7,137,932 433,983 398,309 996,501 13,497,218 455,372 Additions — 211,098 2,007,767 571,601 195,957 1,716,268 4,702,691 158,660 Disposals — — (30,066 ) (2,302 ) (1,865 ) — (34,233 ) (1,155 ) Reclassifications — 141,400 1,535,619 44,882 22,149 (1,744,050 ) — — Depreciation expenses — (511,167 ) (1,837,482 ) (357,695 ) (192,934 ) — (2,899,278 ) (97,816 ) Impairment losses — — — — (956 ) — (956 ) (32 ) Exchange adjustments — — (43 ) — (88 ) — (131 ) (5 ) December 31, 2017 452,738 3,919,086 8,813,727 690,469 420,572 968,719 15,265,311 515,024 December 31, 2017 Cost 452,738 9,809,970 45,778,207 4,004,703 2,624,083 968,719 63,638,420 2,147,045 Accumulated depreciation and impairment — (5,890,884 ) (36,964,480 ) (3,314,234 ) (2,203,511 ) — (48,373,109 ) (1,632,021 ) 452,738 3,919,086 8,813,727 690,469 420,572 968,719 15,265,311 515,024 |
Capitalization Interest and Capitalization Interest Rate Applied Related to Property, Plant and Equipment | As of December 31, 2016 and 2017, certain of the above property, plant and equipment were pledged as collateral for long-term bank loans (Notes 32). 2016 2017 2017 NT$000 NT$000 US$000 Capitalization interest 13,435 18,769 633 Capitalization interest rate applied 1.7456%~3.6166% 1.7624% 1.7624% |
Inventories (Tables)
Inventories (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Inventories | December 31, 2016 Cost Allowance for Carrying amount NT$000 NT$000 NT$000 Raw materials 1,787,810 (140,463 ) 1,647,347 Work in process 190,823 (14,203 ) 176,620 Finished goods 54,190 (175 ) 54,015 2,032,823 (154,841 ) 1,877,982 December 31, 2017 Cost Allowance for Carrying amount NT$000 NT$000 NT$000 US$000 Raw materials 1,769,917 (49,183 ) 1,720,734 58,054 Work in process 180,252 (4,163 ) 176,089 5,941 Finished goods 32,784 (368 ) 32,416 1,094 1,982,953 (53,714 ) 1,929,239 65,089 |
Cost of Inventories Recognized as an Expense | The cost of inventories recognized as an expense for the year: 2016 2017 2017 NT$000 NT$000 US$000 Cost of revenue 14,670,711 14,766,555 498,197 Loss on abandonment 7,098 38,301 1,292 Allowance for (reversal of) inventory valuation and obsolescence loss 67,663 (101,127 ) (3,412 ) 14,745,472 14,703,729 496,077 |
Accounts and notes and other 57
Accounts and notes and other receivables (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Accounts and Notes and Other Receivables | December 31, December 31, December 31, NT$000 NT$000 US$000 Accounts receivable 4,138,580 4,013,705 135,415 Notes receivable 1,753 2,029 69 Less: Allowance for impairment losses (87 ) — — 4,140,246 4,015,734 135,484 Other receivables 57,411 56,716 1,914 Less: Allowance for impairment losses — — — 57,411 56,716 1,914 4,197,657 4,072,450 137,398 |
Movements in Allowance for Impairment of Accounts and Other Receivables | The movements in allowance for impairment of accounts and other receivables during the years are as follows: Accounts receivable Other receivables NT$000 NT$000 January 1, 2016 — — Impairment losses recognized 87 — December 31, 2016 87 — Reversal of allowance for impairment losses (87 ) — December 31, 2017 — — December 31, 2017 (US$000) — — |
Ageing of Accounts Receivable which are Past Due but not Impaired | Ageing of accounts receivable which are past due but not impaired is as follows: December 31, December 31, December 31, NT$000 NT$000 US$000 £ 24,141 10,482 354 1 – 2 months 728 477 16 2 – 3 months 183 426 14 3 – 4 months 245 1,431 48 > 4 months 2,013 3,056 103 27,310 15,872 535 |
Cash and cash equivalents (Tabl
Cash and cash equivalents (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Cash and Cash Equivalents | December 31, 2016 December 31, December 31, NT$000 NT$000 US$000 Short-term deposits 3,854,354 3,883,614 131,026 Cash 525 470 16 Cash at banks 4,106,384 4,151,630 140,068 7,961,263 8,035,714 271,110 Less: Cash and cash equivalents classified as non-current (389,897 ) — — 7,571,366 8,035,714 271,110 |
Non-current assets held for s59
Non-current assets held for sale and discontinued operations (Tables) - Discontinued operations: ChipMOS Shanghai [member] | 12 Months Ended |
Dec. 31, 2017 | |
Cash Flow Information of Discontinued Operations | b) The cash flow information of the discontinued operations is as follows: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Net cash generated from (used in) operating activities 1,072,628 (1,109,029 ) (109,079 ) (3,680 ) Net cash used in investing activities (205,292 ) (1,331,564 ) (272,925 ) (9,208 ) Net cash generated from (used in) financing activities (91,234 ) 1,463,664 461,312 15,564 Effect of foreign exchange rate changes (18,636 ) (61,336 ) (19,874 ) (671 ) Net increase (decrease) in cash and cash equivalents 757,466 (1,038,265 ) 59,434 2,005 |
Assets, Liabilities and Equity of Disposal Group Classified as Held for Sale | c) Assets of disposal group classified as non-current December 31, 2016 NT$000 Cash and cash equivalents 389,897 Accounts receivable 230,523 Other receivables 202,909 Inventories 136,842 Prepayments 15,943 Other current financial assets 1,193 Property, plant and equipment, net 2,033,968 Refundable deposits 113 Prepaid rent – non-current 82,291 Other non-current 11,392 3,105,071 d) Liabilities of disposal group classified as liabilities directly related to non-current December 31, 2016 NT$000 Accounts payable 98,973 Other payables 177,178 Receipts in advance 6,687 Bank loans – current portion 7,614 Lease payable – current 27,702 Other current liabilities 34,276 Bank loans – non-current 106,461 Lease payable – non-current 27,702 Long-term deferred revenue 100,395 Guarantee deposits 651 587,639 e) Equity of disposal group classified as amounts recognized in other comprehensive income and accumulated in equity relating to non-current December 31, 2016 NT$000 Foreign currency translation reserve 287,645 |
Cumulative Income or Expense Recognized in Other Comprehensive Income Relating to Disposal Group Classified as Held for Sale | f) Cumulative income or expense recognized in other comprehensive income relating to disposal group classified as held for sale: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Exchange differences on translation of foreign operations (27,893 ) (195,972 ) (287,645 ) (9,705 ) |
Results of Discontinued Operations | g) The results of discontinued operations are as follows: 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Revenue 1,032,302 1,005,166 227,095 7,662 Cost of revenue (1,050,075 ) (986,004 ) (195,078 ) (6,582 ) Operating expenses (51,910 ) (179,178 ) (58,840 ) (1,985 ) Other operating income (expenses), net 8,469 13,753 1,429 48 Non-operating 26,981 24,158 (2,887 ) (97 ) Loss from discontinued operations before income tax (34,233 ) (122,105 ) (28,281 ) (954 ) Income tax expense — — — — Loss from discontinued operations after income tax (34,233 ) (122,105 ) (28,281 ) (954 ) Gain on disposal of discontinued operations — — 1,843,234 62,187 Profit (loss) from discontinued operations (34,233 ) (122,105 ) 1,814,953 61,233 Discontinued operations’ revenue is mainly from the segments of testing and assembly. |
Issued capital (Tables)
Issued capital (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Issued Capital | December 31, December 31, December 31, in thousands in thousands in thousands Authorized shares Ordinary shares 970,000 1,450,000 970,000 December 31, December 31, December 31, in thousands in thousands in thousands Ordinary shares issued and fully paid Ordinary shares 896,206 886,966 886,297 Issued capital (NT$000) 8,962,066 8,869,663 8,862,971 (US$299,021 |
Movement of Ordinary Shares Issued | The movement of ordinary shares issued is set out below: 2015 2016 2017 in thousands in thousands in thousands January 1 864,619 896,206 886,966 Transactions with non-controlling 35,932 — — Restricted shares 15,752 435 — Unearned restricted shares – cancelled (97 ) — (669 ) Share cancellation (20,000 ) — — Issuance of ordinary shares for capital reorganization (Note 29) — 512,405 — Cancellation of ordinary shares from capital reorganization (Note 29) — (522,080 ) — December 31 896,206 886,966 886,297 |
Capital surplus and retained 61
Capital surplus and retained earnings (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Capital Surplus | Details of the Group’s capital surplus are set out below: December 31, December 31, 2016 December 31, 2017 December 31, NT$000 NT$000 NT$000 US$000 Share premium 2,501,767 6,473,471 5,873,743 198,169 Share-based payment 849,482 — — — Restricted shares 397,296 408,051 390,401 13,171 Others 7,304 7,304 7,304 247 3,755,849 6,888,826 6,271,448 211,587 |
Summary of Distribution Towards Legal Reserve and Cash Dividend | (e) The distribution of 2014, 2015 and 2016 were resolved at the shareholders’ meetings on June 3, 2015 and May 31, 2016 and May 26, 2017, respectively. Details are summarized below: 2014 2015 2016 Amount Distribution Amount Distribution Amount Distribution NT$000 NT$ NT$000 NT$ NT$000 NT$ Legal reserve 331,863 — 223,047 — 28,680 — Cash dividend 1,999,225 2.22 1,792,553 2.09 257,026 0.30 Cash distribution from capital surplus — — — — 599,728 0.70 |
Treasury stock (Tables)
Treasury stock (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Movement of Treasury Stock | The movement of treasury stock is set out below: 2015 2016 2017 Shares (in Amount Shares (in Amount Shares (in Amount Amount January 1 — — — — 30,085 1,007,654 33,997 Treasury stock (repurchased) 20,000 633,737 30,085 1,007,654 — — — Treasury stock (cancelled) (20,000 ) (633,737 ) — — — — — December 31 — — 30,085 1,007,654 30,085 1,007,654 33,997 |
Bank loans (Tables)
Bank loans (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Long-term bank loans [Member] | |
Summary of Bank Loans | Type of loans Period and payment term December 31, December 31, December 31, NT$000 NT$000 US$000 Syndicated bank loan Borrowing period is from June 30, 2016 to June 30, 2021; interest is repayable monthly; principal is repayable semi-annually from December 30, 2017. 10,800,000 9,675,301 326,427 Less: Fee on syndicated bank loan (49,995 ) (33,280 ) (1,122 ) Less: Current portion (fee included) (1,062,285 ) (2,143,168 ) (72,307 ) 9,687,720 7,498,853 252,998 Interest rate range 1.7895 % 1.7895 % 1.7895 % Unused credit lines of long-term bank loans NT$000 2,400,000 2,400,000 |
Details of Repayment Schedule in Respect of Bank Loans | Details of the repayment schedule in respect of the bank loans are as follows: December 31, 2016 December 31, December 31, NT$000 NT$000 US$000 Less than 1 year 1,062,285 2,143,168 72,307 2 to 5 years 9,687,720 7,498,853 252,998 10,750,005 9,642,021 325,305 |
Short-term bank loans [member] | |
Summary of Bank Loans | December 31, December 31, December 31, NT$000 NT$000 US$000 Unsecured bank loans — 969,353 32,704 Annual interest rate — 0.55%~1.71% 0.55%~1.71% |
Unused Credit Lines of Bank Loans | Unused credit lines of short-term bank loans are as follows: December 31, December 31, NT$000 3,119,000 3,028,357 US$000 80,000 80,000 |
Retirement benefit plans (Table
Retirement benefit plans (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Amounts Recognized in Statements of Financial Position | (b) The amounts recognized in the statements of financial position are as follows: December 31, December 31, December 31, 2017 NT$000 NT$000 US$000 Present value of defined benefit obligations (894,163 ) (838,543 ) (28,291 ) Fair value of plan assets 347,195 360,017 12,146 Net defined benefit liability (546,968 ) (478,526 ) (16,145 ) |
Summary of Movements in net Defined Benefit Liability | (c) Movements in net defined benefit liability are as follows: 2016 Present value of Fair value of plan assets Net defined NT$000 NT$000 NT$000 January 1 (844,166 ) 324,695 (519,471 ) Current service cost (321 ) — (321 ) Interest (expense) income (14,644 ) 5,768 (8,876 ) (859,131 ) 330,463 (528,668 ) Remeasurements: Return of plan assets (not including the amount included in interest income or expense) — (3,413 ) (3,413 ) Financial assumption movement effect (31,294 ) — (31,294 ) Experience adjustments (8,676 ) — (8,676 ) (39,970 ) (3,413 ) (43,383 ) Pension fund contribution — 25,083 25,083 Paid pension 4,938 (4,938 ) — December 31 (894,163 ) 347,195 (546,968 ) 2017 Present value of Fair value of plan assets Net defined Net defined NT$000 NT$000 NT$000 US$000 January 1 (894,163 ) 347,195 (546,968 ) (18,454 ) Current service cost (386 ) — (386 ) (13 ) Interest (expense) income (13,236 ) 5,226 (8,010 ) (270 ) (907,785 ) 352,421 (555,364 ) (18,737 ) Remeasurements: Return of plan assets (not including the amount included in interest income or expense) — (1,842 ) (1,842 ) (62 ) Financial assumption movement effect 28,506 — 28,506 962 Experience adjustments 24,174 — 24,174 815 52,680 (1,842 ) 50,838 1,715 Pension fund contribution — 26,000 26,000 877 Paid pension 16,562 (16,562 ) — — December 31 (838,543 ) 360,017 (478,526 ) (16,145 ) |
Principal Actuarial Assumptions | (e) The principal actuarial assumptions used were as follows: 2016 2017 Discount rate used in determining present values 1.50 % 1.75 % Expected future salary increases 3.50 % 3.50 % |
Sensitivity Analysis of Present Value of Defined Benefit Obligations Effected by Changes of Significant Actuarial Assumptions | The sensitivity analysis of present value of defined benefit obligations effected by the changes of significant actuarial assumptions at December 31, 2016 and 2017 are shown below: Discount rate Future salary increases Increase Decrease Increase Decrease December 31, 2016 Effect on present value of defined benefit obligations (31,294 ) 32,893 32,174 (30,787 ) December 31, 2017 Effect on present value of defined benefit obligations (27,192 ) 28,506 27,955 (26,816 ) |
Analysis of Timing of the Future Pension Payment | (g) As of December 31, 2017, the weighted average duration of that retirement plan is 13.4 years. The analysis of timing of the future pension payment is as follows: December 31, 2017 NT$000 US$000 Within 1 year 28,007 945 1-2 31,702 1,070 2-5 102,703 3,465 6-10 178,720 6,029 341,132 11,509 |
Other Payables (Tables)
Other Payables (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Other Payables | December 31, December 31, December 31, NT$000 NT$000 US$000 Salaries and bonus payable 443,993 601,239 20,285 Interest payable 1,059 2,854 96 Accrued pension costs 29,930 32,402 1,093 Employees’ bonus 70,553 371,912 12,548 Directors’ remuneration 3,528 18,596 627 Other expense payable 862,991 953,179 32,159 1,412,054 1,980,182 66,808 |
Provisions - current (Tables)
Provisions - current (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Movements in Provisions | Movements in provisions are as follows: 2017 Provisions for Provisions for Total Total NT$000 NT$000 NT$000 US$000 January 1 66,065 14,654 80,719 2,723 Provision 117,234 119,318 236,552 7,981 Payment (113,143 ) (76,817 ) (189,960 ) (6,409 ) December 31 70,156 57,155 127,311 4,295 |
Significant commitments and c67
Significant commitments and contingencies (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Future Minimum Lease Payments under Operating Lease Contracts | Future minimum lease payments under those leases are as follows: December 31, December 31, December 31, NT$000 NT$000 US$000 £ 39,929 39,342 1,327 2 to 5 years 140,328 130,182 4,392 > 5 years 176,897 139,899 4,720 357,154 309,423 10,439 |
Capital Expenditures that are Contracted for, but not Provided for | Capital expenditures that are contracted for, but not provided for are as follows: December 31, December 31, December 31, NT$000 NT$000 US$000 Property, plant and equipment 1,615,460 2,178,262 73,491 |
Transactions with non-control68
Transactions with non-controlling interests (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Effect on Equity Attributed to the Company from Transactions with Non-controlling Interests | The effect on the equity attributed to the Company during the period is summarized as follows: 2015 NT$000 Carrying amount of non-controlling 2,637,316 Consideration paid to non-controlling (2,921,041 ) Other component of equity (17,964 ) Capital surplus 26,189 Retained earnings (275,500 ) |
Supplementary cash flow infor69
Supplementary cash flow information (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Partial Cash Paid for Investing and Financing Activities | Partial cash paid for investing and financing activities a) Property, plant and equipment 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Purchase in property, plant and equipment 3,644,560 4,690,995 4,849,331 163,608 Add: Beginning balance of payable to contractors and equipment suppliers 1,307,459 523,962 839,983 28,339 Add: Beginning balance of lease payable — — 94,952 3,204 Less: Ending balance of payable to contractors and equipment suppliers (523,962 ) (647,486 ) (878,065 ) (29,624 ) Less: Ending balance of lease payable — (96,006 ) (84,192 ) (2,841 ) Less: Transfer from prepaid equipment (shown as “Other non-current — — (139,304 ) (4,700 ) Cash paid for acquisition of property, plant and equipment 4,428,057 4,471,465 4,682,705 157,986 b) Treasury stock 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Repurchase of shares 1,862,362 1,007,654 — — Less: Beginning balance of prepayment for the repurchase of shares (421,003 ) — — — Cash paid for purchase of treasury stock 1,441,359 1,007,654 — — c) Capital reorganization 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Net assets acquired from ChipMOS Bermuda — 12,987,736 — — Less: Issuance of shares — (9,779,426 ) — — Cash consideration — 3,208,310 — — Directly attributable transaction cost — 133,311 — — Cash paid for capital reorganization — 3,341,621 — — d) Disposal of a subsidiary 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Disposal of a subsidiary — — 2,166,151 73,082 Add: Ending balance of other payables* — — 64,393 2,173 Less: Cash and cash equivalents of discontinued operations — — (449,331 ) (15,160 ) Cash received from disposal of a subsidiary — — 1,781,213 60,095 * According to the Equity Interest Transfer Agreement, the Group accrued the estimated payment to investor based on the operating performance of ChipMOS Shanghai and as a result, cash received from disposal of discontinued operations amounted to NT$64,393 thousand (US$2,173 thousand) will be payable in 2018. |
Reconciliation of Liabilities Arising from Financing Activities | e) Reconciliation of liabilities arising from financing activities Non-Cash flow As of January 1, 2017 Cash flow* Amortization of As of December 31, 2017 NT$000 NT$000 NT$000 NT$000 US$000 Long-term loans (include the current portion) 10,750,005 (1,124,699 ) 16,715 9,642,021 325,305 Short-term loans — 969,353 — 969,353 32,704 Guarantee deposits 1,404 (33 ) — 1,371 46 10,751,409 (155,379 ) 16,715 10,612,745 358,055 * Above movement schedule is exclusively for continuing operations, reconciliation to the statement of cash flow should include movements from discontinued operations for proceeds from long-term and short-term loans amounted to NT$148,829 thousand (US$5,021 thousand) and NT$312,483 thousand (US$10,543 thousand), respectively. |
Related party transactions (Tab
Related party transactions (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Significant Related Party Transactions | c) Significant related party transactions (a) Subcontracting fee 2017 2017 NT$000 US$000 ChipMOS Shanghai 41,183 1,389 (b) Disposal of property, plant and equipment 2017 Selling price Gain on disposal NT$000 US$000 NT$000 US$000 ChipMOS Shanghai 21,982 742 20,240 683 |
Key Management Personnel Compensation | d) Key management personnel compensation 2015 2016 2017 2017 NT$000 NT$000 NT$000 US$000 Short-term employee benefits 217,091 152,319 188,105 6,346 Post-employment compensation 2,249 3,335 5,622 190 Share-based payments 100,280 109,255 18,736 632 319,620 264,909 212,463 7,168 |
Pledged or mortgaged assets (Ta
Pledged or mortgaged assets (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Certain Assets Provided as Collateral Mainly for Long-term Bank Loans and Leases | The Group provided certain assets as collateral mainly for long-term bank loans (Note 22) and leases, which were as follows: December 31, December 31, December 31, NT$000 NT$000 US$000 Property, plant and equipment, net (Note 14) 8,020,905 7,164,089 241,703 Other financial assets – non current 70,677 70,241 2,370 8,091,582 7,234,330 244,073 |
Financial instruments by cate72
Financial instruments by category (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Financial Instruments by Category | December 31, 2016 December 31, December 31, NT$000 NT$000 US$000 Financial assets Available-for-sale 9,960 20,890 705 Loans and receivables (including cash and cash equivalents, other financial assets, accounts and notes receivable, other receivables and refundable deposits) 11,862,621 12,204,292 411,751 11,872,581 12,225,182 412,456 Financial liabilities Financial liabilities at amortized cost (including bank loans, accounts payable, payables to contractors and equipment suppliers, lease payable, other payables and guarantee deposits) 13,579,473 14,024,304 473,155 |
Financial risk management and73
Financial risk management and fair values of financial instruments (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Information on Assets and Liabilities Denominated in Foreign Currencies whose Values would be Materially Affected by Exchange Rate Fluctuations | The information on the assets and liabilities denominated in foreign currencies whose values would be materially affected by the exchange rate fluctuations is as follows: December 31, 2016 Foreign currency Exchange rate Carrying amount Financial assets Monetary items US$000 178,201 32.2500 5,746,982 JPY000 517,114 0.2756 142,517 Financial liabilities Monetary items US$000 7,802 32.2500 251,615 JPY000 550,456 0.2756 151,706 December 31, 2017 Foreign currency Exchange rate Carrying amount Financial assets Monetary items US$000 208,066 29.7600 6,192,044 JPY000 798,254 0.2642 210,899 RMB000 167,484 4.5650 764,564 Financial liabilities Monetary items US$000 16,036 29.7600 477,231 JPY000 1,071,432 0.2642 283,072 |
Details of Exposure to Currency Risk Arising from Recognized Monetary Assets or Liabilities Denominated in a Currency Other Than Functional Currency | The following table details the Group’s exposure at the end of the reporting period to currency risk arising from recognized monetary assets or liabilities denominated in a currency other than the functional currency of the entity to which they relate. December 31, 2016 Change in Effect on profit Effect on other Financial assets US$000 5 % 287,349 — JPY000 5 % 7,126 — Financial liabilities US$000 5 % 12,581 — JPY000 5 % 7,585 — December 31, 2017 Change in Effect on profit Effect on other Financial assets US$000 5 % 309,602 — JPY000 5 % 10,545 — RMB000 5 % 38,228 — Financial liabilities US$000 5 % 23,862 — JPY000 5 % 14,154 — |
Maturity Profile of Non-derivative Financial Liabilities Based on Contracted Undiscounted Payments | The maturity profile of the Group’s non-derivative December 31, 2016 £ 1 year 2 to 5 years > 5 years Total NT$000 NT$000 NT$000 NT$000 Long-term bank loans (including current portion) 1,272,266 10,110,289 — 11,382,555 Accounts payable and payables to contractors and equipment suppliers 1,375,408 — — 1,375,408 Other payables 1,412,054 — — 1,412,054 Lease payable 12,000 30,000 — 42,000 Guarantee deposits — — 1,404 1,404 4,071,728 10,140,289 1,404 14,213,421 December 31, 2017 £ 1 year 2 to 5 years > 5 years Total Total NT$000 NT$000 NT$000 NT$000 US$000 Short-term bank loans 971,813 — — 971,813 32,787 Long-term bank loans (including current portion) 2,321,459 7,740,267 — 10,061,726 339,465 Accounts payable and payables to contractors and equipment suppliers (including related parties) 1,401,499 — — 1,401,499 47,284 Other payables (including related parties) 1,980,218 — — 1,980,218 66,809 Lease payable 12,266 18,266 — 30,532 1,030 Guarantee deposits — — 1,371 1,371 46 6,687,255 7,758,533 1,371 14,447,159 487,421 |
Share-based payments (Tables)
Share-based payments (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Number and Weighted Average Exercise Prices of, and Movements in, Share Options | The following table illustrates the number and weighted average exercise prices (“WAEP”) of, and movements in, share options during the periods indicated: Ten months ended 2016 Number of WAEP Outstanding at the beginning of the period 1,062,250 13.57 Forfeited (25,084 ) 15.35 Exercised (97,715 ) 7.21 Expired (49,500 ) 20.57 Early settled (889,951 ) 13.83 Outstanding at the end of the period — — Exercisable at the end of the period — — |
Number and Weighted Average Exercise Prices of, and Movements in, Share Appreciation Rights | The following table illustrates the number and WAEP of, and movements in, SARs during the periods indicated: Ten months ended 2016 Number of rights WAEP Outstanding at the beginning of the period 588,596 14.07 Granted 37,500 19.55 Forfeited (9,785 ) 15.16 Exercised (123,033 ) 11.26 Early settled (493,278 ) 15.17 Outstanding at the end of the period — — Exercisable at the end of the period — — |
Years of Service and Performance Conditions of Restricted Shares | When the employees of ChipMOS Taiwan accomplished the following years of service and performance conditions, the received restricted shares will be vested based on the vesting ratio. The 1 st The 2 nd The 3 rd Years of service following the receipt of restricted shares Continuous service Continuous service Continuous service Grade of performance appraisal >=B+ >=B+ >=B+ Compliance of terms agreed by the staff and the Company No violation No violation No violation Vesting ratio of numbers of restricted shares received 30% 30% 40% |
Capital management (Tables)
Capital management (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Summary of Group Monitors Capital using Liabilities to Assets Ratio | The Group monitors capital using the liabilities to assets ratio, the percentages of which as of December 31, 2016 and 2017 were as follows: December 31, 2016 December 31, 2017 December 31, 2017 NT$000 NT$000 US$000 Total liabilities 15,048,258 15,138,993 510,762 Total assets 31,295,960 33,259,942 1,122,130 Liabilities to assets ratio 48.08 % 45.52 % 45.52 % |
Financial Statements Schedule76
Financial Statements Schedule: Valuation and Qualifying Accounts (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text block1 [abstract] | |
Disclosure Of Details Of Valuation And Qualifying Accounts | January 1 Additions Deduction / Write-offs Exchange Non-current December 31 NT$000 NT$000 NT$000 NT$000 NT$000 NT$000 Year of 2015 : Allowance for impairment of property, plant and equipment 2,110,362 1,478 (85,351 ) (31,774 ) — 1,994,715 Allowance for impairment of obsolescence and decline in market value of inventories 82,582 12,717 (151 ) (112 ) — 95,036 Year of 2016 : Allowance for impairment of property, plant and equipment 1,994,715 8,198 (45,319 ) (118,046 ) (1,480,278 ) 359,270 Allowance for impairment of obsolescence and decline in market value of inventories 95,036 66,894 — (557 ) (6,532 ) 154,841 Year of 2017 : Allowance for impairment of property, plant and equipment 359,270 956 (39,771 ) — — 320,455 Allowance for impairment of obsolescence and decline in market value of inventories 154,841 — (101,127 ) — — 53,714 |
Corporate and Group Informati77
Corporate and Group Information - Additional Information (Detail) | Mar. 31, 2017 | Oct. 30, 2016 | Jun. 16, 2016 | Mar. 31, 2017 |
Disclosure of corporate and group information [Line Items] | ||||
Percentage of equity interest held by former parent company, ChipMOS TECHNOLOGIES (Bermuda) LTD. | 60.25% | |||
ThaiLin Semiconductor Corp. [member] | ||||
Disclosure of corporate and group information [Line Items] | ||||
Percentage of equity interest in subsidiary | 47.54% | |||
ChipMOS TECHNOLOGIES (Shanghai) LTD. [member] | ||||
Disclosure of corporate and group information [Line Items] | ||||
Percentage of equity interest in subsidiary | 45.02% | |||
Percentage of equity interest in subsidiary to be sold | 54.98% | 54.98% |
Basis of Presentation of Financ
Basis of Presentation of Financial Statements and Principal Accounting Policies - Additional Information (Detail) | Nov. 01, 2016 | Dec. 31, 2017TWD ($) | Jan. 01, 2018TWD ($) | Jan. 01, 2018USD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of detailed information about basis of presentation of financial statements and principal accounting policies [line items] | ||||||
Retained earnings | $ 2,815,966,000 | $ 95,006,000 | $ 260,989,000 | |||
Other receivables - related parties | 4,534,000 | 153,000 | ||||
Inventory | 1,929,239,000 | 65,089,000 | 1,877,982,000 | |||
Deferred tax assets | 212,372,000 | 7,165,000 | 249,806,000 | |||
Deferred tax liabilities | 174,293,000 | $ 5,880,000 | $ 92,543,000 | |||
Financial assets measured at fair value | $ 0 | |||||
Cash and cash equivalents maturity period | 3 months | |||||
Effects of adopting new standards [member] | Revenue recognition of customized products [member] | Increase (decrease) due to application of IFRS 15 [member] | ||||||
Disclosure of detailed information about basis of presentation of financial statements and principal accounting policies [line items] | ||||||
Retained earnings | $ 46,607,000 | $ 1,572,000 | ||||
Contract assets | 255,112,000 | 8,607,000 | ||||
Inventory | (208,505,000) | (7,035,000) | ||||
Effects of adopting new standards [member] | Presentation of contract assets and contract liabilities [member] | Increase (decrease) due to application of IFRS 15 [member] | ||||||
Disclosure of detailed information about basis of presentation of financial statements and principal accounting policies [line items] | ||||||
Contract liabilities | 70,156,000 | 2,367,000 | ||||
Effects of adopting new standards [member] | Recognition of deferred tax [member] | ||||||
Disclosure of detailed information about basis of presentation of financial statements and principal accounting policies [line items] | ||||||
Deferred tax assets | (736,000) | (25,000) | ||||
Deferred tax liabilities | 19,651,000 | 663,000 | ||||
Effects of adopting new standards [member] | IFRS 9 [member] | Provision for impairment [member] | ||||||
Disclosure of detailed information about basis of presentation of financial statements and principal accounting policies [line items] | ||||||
Retained earnings | (1,941,000) | (65,000) | ||||
Contract assets | (115,000) | (4,000) | ||||
Accounts receivable | (1,819,000) | (61,000) | ||||
Other receivables | (5,000) | (169) | ||||
Other receivables - related parties | (2,000) | (67) | ||||
Effects of adopting new standards [member] | IFRS 9 [member] | Financial assets at fair value through other comprehensive income, category [member] | ||||||
Disclosure of detailed information about basis of presentation of financial statements and principal accounting policies [line items] | ||||||
Reclassification of available-for-sale financial assets | 9,950,000 | 336,000 | ||||
Financial assets at fair value through other comprehensive income | 89,335,000 | 3,014,000 | ||||
Retained earnings | 28,584,000 | 964,000 | ||||
Financial assets at fair value through other reserve | 50,801,000 | 1,714,000 | ||||
Effects of adopting new standards [member] | IFRS 9 [member] | Financial assets at fair value through profit or loss, category [member] | ||||||
Disclosure of detailed information about basis of presentation of financial statements and principal accounting policies [line items] | ||||||
Reclassification of available-for-sale financial assets | 10,940,000 | 369,000 | ||||
Retained earnings | 493,000 | 17,000 | ||||
Financial assets at fair value through profit or loss | $ 11,433,000 | $ 386,000 | ||||
Certain properties [member] | Other Property [Member] | Top of range [member] | ||||||
Disclosure of detailed information about basis of presentation of financial statements and principal accounting policies [line items] | ||||||
Estimated useful life of individual assets | 11 years | |||||
Certain properties [member] | Changes in accounting estimates of useful life of property, plant and equipment [member] | Top of range [member] | ||||||
Disclosure of detailed information about basis of presentation of financial statements and principal accounting policies [line items] | ||||||
Estimated useful life of individual assets | 16 years | |||||
Certain equipment [member] | Changes in accounting estimates of useful life of property, plant and equipment [member] | Bottom of range [member] | ||||||
Disclosure of detailed information about basis of presentation of financial statements and principal accounting policies [line items] | ||||||
Estimated useful life of individual assets | 2 years | |||||
Certain equipment [member] | Changes in accounting estimates of useful life of property, plant and equipment [member] | Top of range [member] | ||||||
Disclosure of detailed information about basis of presentation of financial statements and principal accounting policies [line items] | ||||||
Estimated useful life of individual assets | 8 years | |||||
Certain equipment [member] | office equipment [member] | Bottom of range [member] | ||||||
Disclosure of detailed information about basis of presentation of financial statements and principal accounting policies [line items] | ||||||
Estimated useful life of individual assets | 2 years | |||||
Certain equipment [member] | office equipment [member] | Top of range [member] | ||||||
Disclosure of detailed information about basis of presentation of financial statements and principal accounting policies [line items] | ||||||
Estimated useful life of individual assets | 6 years |
Basis of Preparation of Finan79
Basis of Preparation of Financial Statements and Principal Accounting Policies - Summary of Ownership Interests in Subsidiaries (Detail) | 12 Months Ended | |
Dec. 31, 2017 | Dec. 31, 2016 | |
ChipMOS USA Inc[member] | ||
Disclosure of joint ventures [line items] | ||
Name of investor | The Company | |
Main businesses | Research, development and marketing of semiconductors, circuits, and electronic related products | |
Location | San Jose, USA | |
Percentage of Ownership (%) | 100.00% | 100.00% |
ChipMOS BVI [member] | ||
Disclosure of joint ventures [line items] | ||
Name of investor | The Company | |
Main businesses | Holding company | |
Location | British Virgin Islands | |
Percentage of Ownership (%) | 100.00% | 100.00% |
ChipMOS Shanghai [member] | ||
Disclosure of joint ventures [line items] | ||
Name of investor | ChipMOS BVI | |
Main businesses | Semiconductor assembling and testing services | |
Location | People's Republic of China ("PRC") | |
Percentage of Ownership (%) | 100.00% |
Basis of Preparation of Finan80
Basis of Preparation of Financial Statements and Principal Accounting Policies - Summary of Ownership Interests in Subsidiaries (Parenthetical) (Detail) | Mar. 31, 2017 |
ChipMOS Shanghai [member] | |
Disclosure of joint ventures [line items] | |
Percentage of shareholding in subsidiaries disposed off | 54.98% |
Basis of Preparation of Finan81
Basis of Preparation of Financial Statements and Principal Accounting Policies - Impact on Depreciation Expenses of Current and Future Periods due to Change in Estimated Useful Lives of Certain Properties and Equipment (Detail) $ in Thousands | 12 Months Ended |
Dec. 31, 2016TWD ($) | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Decrease in depreciation expenses | $ (119,737) |
Within 1 year [member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Decrease in depreciation expenses | (605,259) |
1-2 years [member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Decrease in depreciation expenses | (389,972) |
2019 [member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Decrease in depreciation expenses | $ (164,824) |
Basis of Preparation of Finan82
Basis of Preparation of Financial Statements and Principal Accounting Policies - Estimated Useful Life for Depreciation of Individual Assets (Detail) | 12 Months Ended |
Dec. 31, 2017 | |
Buildings [member] | Bottom of range [member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated useful life of individual assets | 6 years |
Buildings [member] | Top of range [member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated useful life of individual assets | 51 years |
Machinery and equipment [member] | Bottom of range [member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated useful life of individual assets | 2 years |
Machinery and equipment [member] | Top of range [member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated useful life of individual assets | 8 years |
Tools [member] | Bottom of range [member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated useful life of individual assets | 2 years |
Tools [member] | Top of range [member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated useful life of individual assets | 3 years |
Other equipment [member] | Bottom of range [member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated useful life of individual assets | 2 years |
Other equipment [member] | Top of range [member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated useful life of individual assets | 6 years |
Translation into U.S. Dollar 83
Translation into U.S. Dollar Amounts - Additional Information (Detail) | Dec. 29, 2017$ / $ |
Foreign exchange rates [abstract] | |
Foreign exchange rate from New Taiwan dollars to U.S. dollars at the noon buying rate in the City of New York for cable transfers as certified for customs purposes by the Federal Reserve Bank of New York | 29.64 |
Segment Information - Financial
Segment Information - Financial Segment Information for Operating Segments (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Revenue | ||||
Revenue | $ 17,940,855 | $ 605,292 | $ 18,387,593 | $ 18,837,089 |
Operating profit | 2,239,881 | 75,570 | 1,998,575 | 2,648,427 |
Depreciation and amortization | (2,899,278) | (97,816) | (3,089,904) | (2,903,221) |
Interest income | 53,123 | 1,792 | 38,554 | 58,862 |
Interest expense | (190,425) | (6,425) | (144,545) | (126,621) |
Share of profit (loss) of associates | (179,491) | (6,056) | 28,924 | 31,269 |
Purchase of property, plant and equipment | 4,702,691 | 158,660 | ||
Continuing operations [member] | ||||
Revenue | ||||
Revenue | 17,940,855 | 605,292 | 18,387,593 | 18,837,089 |
Operating profit | 2,239,881 | 75,570 | 1,998,575 | 2,648,427 |
Depreciation and amortization | (2,899,278) | (97,816) | (3,089,904) | (2,903,221) |
Interest income | 53,123 | 1,792 | 38,554 | 58,862 |
Interest expense | (190,425) | (6,425) | (144,545) | (126,621) |
Share of profit (loss) of associates | (179,491) | (6,056) | 28,924 | 31,269 |
Purchase of property, plant and equipment | 4,702,691 | 158,660 | 3,123,312 | 3,644,560 |
Continuing operations [member] | External [member] | ||||
Revenue | ||||
Revenue | 17,940,855 | 605,292 | 18,387,593 | 18,837,089 |
Continuing operations [member] | Operating segments [member] | Testing [member] | ||||
Revenue | ||||
Revenue | 4,838,246 | 4,587,054 | 4,718,658 | |
Operating profit | 1,448,939 | 1,346,874 | 1,203,169 | |
Depreciation and amortization | (673,393) | (664,026) | (646,545) | |
Purchase of property, plant and equipment | 836,894 | 771,500 | 796,964 | |
Continuing operations [member] | Operating segments [member] | Testing [member] | External [member] | ||||
Revenue | ||||
Revenue | 4,838,246 | 4,587,054 | 4,546,394 | |
Continuing operations [member] | Operating segments [member] | Testing [member] | Intersegment [member] | ||||
Revenue | ||||
Revenue | 172,264 | |||
Continuing operations [member] | Operating segments [member] | Assembly [member] | ||||
Revenue | ||||
Revenue | 5,259,281 | 5,881,883 | 5,526,110 | |
Operating profit | (55,198) | 143,220 | 117,127 | |
Depreciation and amortization | (597,500) | (635,481) | (550,819) | |
Purchase of property, plant and equipment | 655,879 | 554,162 | 895,767 | |
Continuing operations [member] | Operating segments [member] | Assembly [member] | External [member] | ||||
Revenue | ||||
Revenue | 5,259,281 | 5,880,780 | 5,525,582 | |
Continuing operations [member] | Operating segments [member] | Assembly [member] | Intersegment [member] | ||||
Revenue | ||||
Revenue | 1,103 | 528 | ||
Continuing operations [member] | Operating segments [member] | LCDD [member] | ||||
Revenue | ||||
Revenue | 4,790,116 | 4,920,302 | 5,396,001 | |
Operating profit | 1,285,495 | 963,698 | 1,354,398 | |
Depreciation and amortization | (1,048,587) | (1,167,908) | (1,157,809) | |
Purchase of property, plant and equipment | 2,615,153 | 910,457 | 1,366,389 | |
Continuing operations [member] | Operating segments [member] | LCDD [member] | External [member] | ||||
Revenue | ||||
Revenue | 4,789,869 | 4,920,302 | 5,396,001 | |
Continuing operations [member] | Operating segments [member] | LCDD [member] | Intersegment [member] | ||||
Revenue | ||||
Revenue | 247 | |||
Continuing operations [member] | Operating segments [member] | Bumping [member] | ||||
Revenue | ||||
Revenue | 3,053,459 | 2,999,967 | 3,369,112 | |
Operating profit | (336,123) | (341,356) | 28,605 | |
Depreciation and amortization | (579,605) | (622,412) | (548,234) | |
Purchase of property, plant and equipment | 594,765 | 887,144 | 589,615 | |
Continuing operations [member] | Operating segments [member] | Bumping [member] | External [member] | ||||
Revenue | ||||
Revenue | 3,053,459 | 2,999,457 | 3,369,112 | |
Continuing operations [member] | Operating segments [member] | Bumping [member] | Intersegment [member] | ||||
Revenue | ||||
Revenue | 510 | |||
Continuing operations [member] | Operating segments [member] | Others [member] | ||||
Revenue | ||||
Revenue | 35,808 | 41,670 | 44,577 | |
Operating profit | (100,545) | (82,331) | (47,191) | |
Depreciation and amortization | (503) | (565) | (357) | |
Interest income | 53,123 | 51,756 | 60,552 | |
Interest expense | (190,425) | (144,545) | (128,311) | |
Share of profit (loss) of associates | 1,347,851 | (128,866) | 25,346 | |
Purchase of property, plant and equipment | 49 | 2,477 | ||
Continuing operations [member] | Operating segments [member] | Others [member] | Intersegment [member] | ||||
Revenue | ||||
Revenue | 35,808 | 41,670 | 44,577 | |
Continuing operations [member] | Elimination [member] | ||||
Revenue | ||||
Revenue | (36,055) | (43,283) | (217,369) | |
Operating profit | (2,687) | (31,530) | (7,681) | |
Depreciation and amortization | 310 | 488 | 543 | |
Interest income | (13,202) | (1,690) | ||
Interest expense | 1,690 | |||
Share of profit (loss) of associates | (1,527,342) | 157,790 | 5,923 | |
Purchase of property, plant and equipment | (6,652) | |||
Continuing operations [member] | Elimination [member] | Intersegment [member] | ||||
Revenue | ||||
Revenue | (36,055) | (43,283) | (217,369) | |
Discontinued operations: ChipMOS Shanghai [member] | ||||
Revenue | ||||
Revenue | 227,095 | 7,662 | 1,005,166 | 1,032,302 |
Operating profit | (25,394) | (857) | (146,263) | (61,214) |
Depreciation and amortization | (141,375) | (118,702) | ||
Interest income | 464 | 16 | 3,753 | 9,421 |
Interest expense | (2,414) | (81) | (606) | (414) |
Purchase of property, plant and equipment | 1,567,683 | |||
Discontinued operations: ChipMOS Shanghai [member] | External [member] | ||||
Revenue | ||||
Revenue | $ 227,095 | $ 7,662 | $ 1,005,166 | $ 1,032,302 |
Segment Information - Geographi
Segment Information - Geographic Information of Revenue (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of geographical areas [Line Items] | ||||
Revenue | $ 17,940,855 | $ 605,292 | $ 18,387,593 | $ 18,837,089 |
ROC [member] | ||||
Disclosure of geographical areas [Line Items] | ||||
Revenue | 13,152,419 | 443,739 | 12,728,014 | 13,529,739 |
Japan [member] | ||||
Disclosure of geographical areas [Line Items] | ||||
Revenue | 2,257,296 | 76,157 | 1,855,674 | 986,403 |
Singapore [member] | ||||
Disclosure of geographical areas [Line Items] | ||||
Revenue | 1,798,585 | 60,681 | 3,087,835 | 2,928,591 |
Others [member] | ||||
Disclosure of geographical areas [Line Items] | ||||
Revenue | $ 732,555 | $ 24,715 | $ 716,070 | $ 1,392,356 |
Segment Information - Net Reven
Segment Information - Net Revenue from Customers Representing at Least 10% of Total Revenue (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of major customers [Line Items] | ||||
Net revenue | $ 17,940,855 | $ 605,292 | $ 18,387,593 | $ 18,837,089 |
Customer A [member] | ||||
Disclosure of major customers [Line Items] | ||||
Net revenue | $ 3,434,873 | $ 115,886 | $ 3,370,285 | $ 4,307,855 |
Percentage of total revenue | 19.00% | 19.00% | 18.00% | 23.00% |
Customer K [member] | ||||
Disclosure of major customers [Line Items] | ||||
Net revenue | $ 2,742,882 | $ 92,540 | $ 2,633,431 | $ 2,386,975 |
Percentage of total revenue | 15.00% | 15.00% | 14.00% | 13.00% |
Customer I [member] | ||||
Disclosure of major customers [Line Items] | ||||
Net revenue | $ 1,798,111 | $ 60,665 | $ 3,085,190 | $ 2,935,820 |
Percentage of total revenue | 10.00% | 10.00% | 17.00% | 16.00% |
Customer C [member] | ||||
Disclosure of major customers [Line Items] | ||||
Net revenue | $ 1,530,209 | $ 51,626 | $ 1,870,675 | $ 1,761,049 |
Percentage of total revenue | 9.00% | 9.00% | 10.00% | 9.00% |
Operating Costs and Expenses -
Operating Costs and Expenses - Summary of Operating Costs and Expenses (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Analysis of income and expense [abstract] | ||||
Change of finished goods and work in process | $ 31,977 | $ 1,079 | $ (19,498) | $ 7,899 |
Consumption of raw materials and supplies | 3,036,350 | 102,441 | 3,346,540 | 3,271,581 |
Employee benefit expenses | 5,895,778 | 198,913 | 5,317,125 | 5,358,962 |
Depreciation and amortization | 2,899,278 | 97,816 | 3,089,904 | 2,903,221 |
Other expenses | 4,530,425 | 152,848 | 4,745,253 | 4,752,050 |
Total operating costs and expenses | 16,393,808 | 553,097 | 16,479,324 | 16,293,713 |
Employee benefit expenses | ||||
Salaries | 4,874,709 | 164,464 | 4,126,203 | 4,300,550 |
Labor and health insurance | 390,788 | 13,184 | 351,232 | 355,331 |
Pension | 198,502 | 6,697 | 183,293 | 179,665 |
Share-based payments | 123,021 | 4,151 | 356,463 | 207,242 |
Other personnel expenses | 308,758 | 10,417 | 299,934 | 316,174 |
Total employee benefit costs | $ 5,895,778 | $ 198,913 | $ 5,317,125 | $ 5,358,962 |
Other Operating Income (Expen88
Other Operating Income (Expenses), Net - Summary of Other Operating Income (Expenses), Net (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of other operating income expense [Line Items] | ||||
Gain on disposal of property, plant and equipment, net | $ 132,777 | $ 4,480 | $ 2,575 | $ 1,562 |
Impairment on property, plant and equipment | (956) | (32) | ||
Gain on disposal of scrapped materials | 27,940 | 943 | 30,476 | 31,870 |
Gain on disposal of items purchased on behalf of others | 26,417 | 891 | 48,812 | 22,893 |
Royalty income | 11,998 | 405 | ||
Insurance compensation income | 486,858 | 16,426 | 7,033 | |
Others | 7,800 | 262 | 9,608 | 50,186 |
Other operating income (expenses), net | 692,834 | 23,375 | 90,306 | 105,051 |
Continuing operations [member] | ||||
Disclosure of other operating income expense [Line Items] | ||||
Impairment on property, plant and equipment | $ (956) | $ (32) | $ (8,198) | $ (1,460) |
Finance Costs - Summary of Fina
Finance Costs - Summary of Finance Costs (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Analysis of income and expense [abstract] | ||||
Interest on bank loans | $ 208,486 | $ 7,034 | $ 157,254 | $ 146,003 |
Interest on lease payable | 708 | 24 | 212 | |
Less: Amounts capitalized in qualifying assets | (18,769) | (633) | (12,921) | (19,382) |
Interest expense | 190,425 | 6,425 | 144,545 | 126,621 |
Finance expense | 26,858 | 906 | 34,571 | 15,890 |
Finance cost net | $ 217,283 | $ 7,331 | $ 179,116 | $ 142,511 |
Other Non-operating Income (E90
Other Non-operating Income (Expenses), Net - Summary of Other Non-operating Income (Expenses), Net (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Analysis of income and expense [abstract] | ||||
Interest income | $ 53,123 | $ 1,792 | $ 38,554 | $ 58,862 |
Foreign exchange gains (losses), net | (418,970) | (14,135) | (195,326) | 241,983 |
Impairment of available-for-sale financial assets | (8,584) | |||
Gain on disposal of financial assets at fair value through profit or loss | 637 | 22 | 621 | 11,483 |
Gain on disposal of long-term investment in associates | 16,929 | 571 | ||
Share of profit (loss) of associates | (179,491) | (6,056) | 28,924 | 31,269 |
Reimbursement of ADSs service charge | 23,707 | 800 | ||
Others | 13,883 | 468 | 8,203 | 5,127 |
Other non-operating income (expenses), net | $ (490,182) | $ (16,538) | $ (119,024) | $ 340,140 |
Income Tax Expense - Additional
Income Tax Expense - Additional Information (Detail) $ in Thousands, $ in Thousands | Oct. 31, 2016TWD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015 | Dec. 31, 2017USD ($) |
Disclosure of income tax expense [Line Items] | |||||
Statutory tax rates | 17.00% | 17.00% | 17.00% | ||
Reduction of unappropriated retained earnings through capital transfer | $ (5,052,343) | $ (5,052,343) | |||
Tax on unappropriated retained earnings | 10.00% | ||||
Deductible temporary differences | $ 28,584 | 534,568 | $ 964 | ||
Taxable temporary differences | $ 920,943 | $ 31,071 | |||
Balance of imputation tax credit account | $ 1,192,119 | ||||
Imputation tax credit, Creditable tax rate | 20.48% | ||||
ThaiLin Semiconductor Corp. [member] | |||||
Disclosure of income tax expense [Line Items] | |||||
Statutory tax rates | 17.00% | ||||
ChipMOS TECHNOLOGIES (Shanghai) LTD. [member] | |||||
Disclosure of income tax expense [Line Items] | |||||
Statutory tax rates | 25.00% | 25.00% | 25.00% |
Income Tax Expense - Major Comp
Income Tax Expense - Major Components of Income Tax Expense (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Current income tax: | ||||
Current income tax on profits for the period | $ 125,376 | $ 4,230 | $ 331,144 | $ 720,461 |
Income tax (benefit) on unappropriated retained earnings | 246,684 | 8,322 | (174,930) | 198,157 |
Prior year income tax (over) under estimation | 67,885 | 2,290 | 4,527 | (1,732) |
Total current income tax | 439,945 | 14,842 | 160,741 | 916,886 |
Deferred income tax: | ||||
Relating to origination and reversal of temporary differences | 110,542 | 3,730 | 16,379 | 18,969 |
Total deferred income tax | 110,542 | 3,730 | 16,379 | 18,969 |
Income tax expense reported in the consolidated statements of comprehensive income | $ 550,487 | $ 18,572 | $ 177,120 | $ 935,855 |
Income Tax Expense - Deferred T
Income Tax Expense - Deferred Tax Charged to Other Comprehensive Income (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Income tax relating to components of other comprehensive income [abstract] | ||||
Remeasurement of defined benefit obligations | $ 8,642 | $ 292 | $ (7,375) | $ (7,099) |
Income Tax Expense - Reconcilia
Income Tax Expense - Reconciliation of Income Tax Expense and Accounting Profit Before Income Tax (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] | ||||
Tax calculated based on profit before tax and statutory tax rate | $ 566,649 | $ 19,118 | $ 214,550 | $ 462,692 |
Expenses disallowed (added) by tax regulations | 10,185 | 344 | (2,190) | 5,692 |
Temporary difference not recognized as deferred tax assets | (85,168) | (2,873) | 1,306 | 6,522 |
Tax exempted (income) expenses by tax regulation | (256,788) | (8,664) | 12,057 | (13,483) |
Taxable loss not recognized as deferred tax assets | 54,012 | 25,737 | ||
Effect of different tax rates in countries in which the Group operates | 1,040 | 35 | 10,451 | 3,100 |
Withholding tax | 57,337 | 249,170 | ||
Prior year income tax (over) under estimation | 67,885 | 2,290 | 4,527 | (1,732) |
Income tax (benefit) on unappropriated retained earnings | 246,684 | 8,322 | (174,930) | 198,157 |
Income tax expense reported in the consolidated statements of comprehensive income | $ 550,487 | $ 18,572 | $ 177,120 | $ 935,855 |
Income Tax Expense - Details of
Income Tax Expense - Details of Deferred Tax Assets (Liabilities) (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||||
Profit and loss | $ (110,542) | $ (3,730) | $ (16,379) | $ (18,969) |
Unrealized exchange losses deferred tax assets [member] | ||||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||||
Beginning balance | (5,843) | |||
Profit and loss | 8,167 | 5,843 | ||
Ending balance | 8,167 | 276 | (5,843) | |
Inventories [member] | ||||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||||
Beginning balance | 26,324 | 14,823 | ||
Profit and loss | (17,192) | 11,501 | ||
Ending balance | 9,132 | 308 | 26,324 | 14,823 |
Property, plant and equipment, deferred tax assets [member] | ||||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||||
Beginning balance | 80,869 | 3,672 | ||
Profit and loss | (25,375) | 77,197 | ||
Ending balance | 55,494 | 1,872 | 80,869 | 3,672 |
Deferred income [member] | ||||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||||
Beginning balance | 41,294 | 50,423 | ||
Profit and loss | (1,809) | (9,129) | ||
Ending balance | 39,485 | 1,332 | 41,294 | 50,423 |
Provisions [member] | ||||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||||
Beginning balance | 11,232 | 16,473 | ||
Profit and loss | 10,411 | (5,241) | ||
Ending balance | 21,643 | 730 | 11,232 | 16,473 |
Net defined benefit liability, non-current [member] | ||||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||||
Beginning balance | 90,087 | 86,719 | ||
Profit and loss | (2,994) | (4,007) | ||
Other comprehensive income | (8,642) | 7,375 | ||
Ending balance | 78,451 | 2,647 | 90,087 | 86,719 |
Deferred tax asset [member] | ||||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||||
Beginning balance | 249,806 | 166,267 | ||
Profit and loss | (28,792) | 76,164 | ||
Other comprehensive income | (8,642) | 7,375 | ||
Ending balance | 212,372 | 7,165 | 249,806 | $ 166,267 |
Unrealised exchange gains (losses), deferred tax liabilities [member] | ||||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||||
Beginning balance | (14,155) | |||
Profit and loss | 14,155 | (14,155) | ||
Ending balance | (14,155) | |||
Property, plant and equipment, deferred tax liabilities [member] | ||||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||||
Beginning balance | (78,388) | |||
Profit and loss | (95,905) | (78,388) | ||
Ending balance | (174,293) | (5,880) | (78,388) | |
Deferred tax liabilities [member] | ||||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||||
Beginning balance | (92,543) | |||
Profit and loss | (81,750) | (92,543) | ||
Ending balance | $ (174,293) | $ (5,880) | $ (92,543) |
Earnings Per Share ("EPS") - In
Earnings Per Share ("EPS") - Income and Share Data Used in Basic and Diluted EPS Computations (Detail) $ / shares in Units, $ / shares in Units, shares in Thousands, $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($)$ / sharesshares | Dec. 31, 2017USD ($)$ / sharesshares | Dec. 31, 2016TWD ($)$ / sharesshares | Dec. 31, 2015TWD ($)$ / sharesshares | |
Basic earnings per share, amount after tax | ||||
Equity holders of the Company - Continuing operations, amount after tax | $ 981,929 | $ 33,129 | $ 1,829,327 | $ 2,164,557 |
Equity holders of the Company - Discontinued operations, amount after tax | 1,814,953 | 61,233 | (122,105) | (34,233) |
Equity holders of the Company, amount after tax | $ | 2,796,882 | 1,707,222 | 2,130,324 | |
Predecessors' interests, amount after tax | (306,012) | (291,429) | ||
Profit (loss) attributable to equity holders of the Company, amount after tax | $ | 1,401,210 | 1,838,895 | ||
Diluted earnings per share, amount after tax | ||||
Equity holders of the Company - Continuing operations, amount after tax | 981,929 | 33,129 | 1,829,327 | 2,164,557 |
Equity holders of the Company - Discontinued operations, amount after tax | 1,814,953 | 61,233 | (122,105) | (34,233) |
Equity holders of the Company, amount after tax | $ | 2,796,882 | 1,707,222 | 2,130,324 | |
Predecessors' interests, amount after tax | (306,012) | (291,429) | ||
Profit (loss) attributable to equity holders of the Company, amount after tax | $ | $ 1,401,210 | $ 1,838,895 | ||
Basic and diluted earnings per share, weighted-average number of ordinary shares outstanding | ||||
Weighted-average number of ordinary shares outstanding | shares | 846,686 | 846,686 | 859,644 | 877,402 |
Employees' bonuses | shares | 14,034 | 14,034 | 3,035 | 10,867 |
Restricted shares | shares | 5,075 | 5,075 | 4,122 | 27 |
Weighted-average number of ordinary shares outstanding | shares | 865,795 | 865,795 | 866,801 | 888,296 |
Ordinary shares [member] | ||||
Basic earnings per share | ||||
Equity holders of the Company - Continuing operations, earnings per share | (per share) | $ 1.16 | $ 0.04 | $ 2.13 | $ 2.47 |
Equity holders of the Company - Discontinued operations, earnings per share | (per share) | 2.14 | 0.07 | (0.14) | (0.04) |
Basic earnings per share | (per share) | 3.30 | 0.11 | 1.99 | 2.43 |
Predecessors' interests, earnings per share | (per share) | (0.35) | (0.33) | ||
Basic earnings per share | (per share) | 3.30 | 0.11 | 1.64 | 2.10 |
Diluted earnings per share | ||||
Equity holders of the Company - Continuing operations, earnings per share | (per share) | 1.13 | 0.04 | 2.11 | 2.44 |
Equity holders of the Company - Discontinued operations, earnings per share | (per share) | 2.10 | 0.07 | (0.14) | (0.04) |
Diluted earnings per share | (per share) | 3.23 | 0.11 | 1.97 | 2.40 |
Predecessors' interests, earnings per share | (per share) | (0.35) | (0.33) | ||
Diluted earnings per share | (per share) | $ 3.23 | $ 0.11 | $ 1.62 | $ 2.07 |
Dividend - Additional Informati
Dividend - Additional Information (Detail) $ / shares in Units, $ in Thousands, $ in Thousands | Jul. 12, 2017TWD ($) | Jul. 12, 2017USD ($) | May 26, 2017$ / shares | Dec. 19, 2016TWD ($) | May 31, 2016$ / shares |
Disclosure of dividends [Line Items] | |||||
Dividend paid | $ 1 | $ 2.09 | |||
Dividend paid | $ 856,754 | $ 28,906 | $ 1,792,553 | ||
Capital surplus [member] | |||||
Disclosure of dividends [Line Items] | |||||
Dividend paid | $ 0.70 |
Available-for-Sale Financial 98
Available-for-Sale Financial Assets - Summary of Available-for-Sale Financial Assets (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of financial assets [Line Items] | |||
Available-for-sale financial assets | $ 20,890 | $ 705 | $ 9,960 |
Gross carrying amount [member] | |||
Disclosure of financial assets [Line Items] | |||
Available-for-sale financial assets | 49,474 | 1,669 | 79,880 |
Allowance for impairment losses [member] | |||
Disclosure of financial assets [Line Items] | |||
Available-for-sale financial assets | $ (28,584) | $ (964) | $ (69,920) |
Available-for-Sale Financial 99
Available-for-Sale Financial Assets - Additional Information (Detail) - 12 months ended Dec. 31, 2017 $ in Thousands, $ in Thousands | TWD ($) | USD ($) |
VIGOUR TECHNOLOGY Corporation [member] | ||
Disclosure of financial assets [Line Items] | ||
Impairment loss of investments | $ 41,336 | $ 1,395 |
Investment in Associates - Deta
Investment in Associates - Details of Investment in Associates (Detail) $ in Thousands, $ in Thousands | 1 Months Ended | 12 Months Ended | ||
Jan. 31, 2017 | Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2017USD ($) | |
Disclosure of associates [line items] | ||||
Carrying amount | $ 3,433,332 | $ 369,329 | $ 115,834 | |
JMC ELECTRONICS CO., LTD. [member] | ||||
Disclosure of associates [line items] | ||||
Country of incorporation and business | Kaohsiung Taiwan | |||
Measurement method | Equity method | |||
Carrying amount | $ 373,276 | $ 369,329 | 12,593 | |
Ownership | 19.10% | 19.10% | 21.22% | |
ChipMOS Shanghai [member] | ||||
Disclosure of associates [line items] | ||||
Country of incorporation and business | Shanghai PRC | |||
Measurement method | Equity method | |||
Carrying amount | $ 3,060,056 | $ 103,241 | ||
Ownership | 45.02% |
Investment in Associates - Addi
Investment in Associates - Additional Information (Detail) $ in Thousands, $ in Thousands | 1 Months Ended | 12 Months Ended | |||||||
Jun. 30, 2017TWD ($) | Jun. 30, 2017USD ($) | Jan. 31, 2017 | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | Mar. 31, 2017 | Jun. 17, 2015 | |
Disclosure of associates [line items] | |||||||||
Sale of equity percentage | 52.46% | ||||||||
Acquisition of investment in associate | $ 1,373,486 | $ 46,339 | $ 116,000 | ||||||
Share of profit (loss) of investment associates | $ (179,491) | $ (6,056) | $ 28,924 | ||||||
JMC ELECTRONICS CO., LTD. [member] | |||||||||
Disclosure of associates [line items] | |||||||||
Percentage of ownership interest in associate | 19.10% | 19.10% | 19.10% | 21.22% | |||||
Disposal gain from long-term investment | $ 16,929 | $ 571 | |||||||
ChipMOS Shanghai [member] | |||||||||
Disclosure of associates [line items] | |||||||||
Percentage of ownership interest in associate | 45.02% | 45.02% | |||||||
Sale of equity percentage | 54.98% | ||||||||
Acquisition of investment in associate | $ 1,373,486 | $ 46,339 |
Investment in Associates - Summ
Investment in Associates - Summarized Financial Information for Investment in Material Associates (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | Dec. 31, 2017USD ($) | |
Disclosure of associates [line items] | |||||
Current assets | $ 14,200,980 | $ 16,895,957 | $ 479,115 | ||
Non-current assets | 19,058,962 | 14,400,003 | 643,015 | ||
Current liabilities | (6,942,995) | (4,690,312) | (234,244) | ||
Non-current liabilities | (8,195,998) | (10,357,946) | (276,518) | ||
Carrying amount | 3,433,332 | 369,329 | 115,834 | ||
Revenue | 17,940,855 | $ 605,292 | 18,387,593 | $ 18,837,089 | |
Profit (loss) for the year from continuing operations | 981,929 | 33,129 | 1,523,315 | 1,910,201 | |
Other comprehensive income, net of income tax | (189,902) | (6,407) | (236,421) | (47,200) | |
Total comprehensive income | 2,606,980 | 87,955 | 1,164,789 | $ 1,828,768 | |
ChipMOS Shanghai [member] | |||||
Disclosure of associates [line items] | |||||
Current assets | 3,380,641 | 114,056 | |||
Non-current assets | 2,766,839 | 93,348 | |||
Current liabilities | (460,054) | (15,521) | |||
Non-current liabilities | (489,097) | (16,501) | |||
Total net assets | 5,198,329 | 175,382 | |||
Group's share | 2,340,506 | 78,965 | |||
Depreciable assets | 703,536 | 23,736 | |||
Goodwill | 22,118 | 746 | |||
Inter-company transactions and amortization | (6,104) | (206) | |||
Carrying amount | 3,060,056 | 103,241 | |||
Revenue | 1,141,415 | 38,509 | |||
Profit (loss) for the year from continuing operations | (348,472) | (11,757) | |||
Total comprehensive income | (348,472) | (11,757) | |||
JMC ELECTRONICS CO., LTD. [member] | |||||
Disclosure of associates [line items] | |||||
Current assets | 833,914 | 904,571 | 28,134 | ||
Non-current assets | 1,161,620 | 876,314 | 39,191 | ||
Current liabilities | (284,580) | (258,513) | (9,601) | ||
Non-current liabilities | (1,756) | (2,491) | (59) | ||
Total net assets | 1,709,198 | 1,519,881 | 57,665 | ||
Group's share | 326,456 | 322,509 | 11,014 | ||
Goodwill | 46,820 | 46,820 | 1,579 | ||
Carrying amount | 373,276 | 369,329 | $ 12,593 | ||
Revenue | 1,322,928 | 44,633 | 1,667,761 | ||
Profit (loss) for the year from continuing operations | 4,414 | 149 | 136,303 | ||
Other comprehensive income, net of income tax | 2,903 | 98 | (627) | ||
Total comprehensive income | 7,317 | 247 | 135,676 | ||
Dividend received from the associate | $ 14,325 | $ 483 | $ 5,730 |
Property, Plant and Equipmen103
Property, Plant and Equipment, Net - Summary of Property, Plant and Equipment, Net (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | $ 15,531,186 | $ 523,994 | |
Less: Property, plant and equipment classified as held for sale | (2,033,968) | (68,622) | $ (2,033,968) |
Beginning Balance | 13,497,218 | 455,372 | 14,211,560 |
Additions | 4,702,691 | 158,660 | |
Disposals | (34,233) | (1,155) | |
Depreciation expenses | (2,899,278) | (97,816) | |
Impairment losses | (956) | (32) | |
Exchange adjustments | (131) | (5) | |
Ending Balance | 15,531,186 | ||
Ending Balance | 15,265,311 | 515,024 | 13,497,218 |
Land [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | 452,738 | ||
Beginning Balance | 452,738 | 452,738 | |
Ending Balance | 452,738 | ||
Ending Balance | 452,738 | 452,738 | |
Buildings [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | 4,787,946 | ||
Less: Property, plant and equipment classified as held for sale | (710,191) | (710,191) | |
Beginning Balance | 4,077,755 | 4,836,680 | |
Additions | 211,098 | ||
Reclassifications | 141,400 | ||
Depreciation expenses | (511,167) | ||
Ending Balance | 4,787,946 | ||
Ending Balance | 3,919,086 | 4,077,755 | |
Machinery and equipment [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | 7,571,620 | ||
Less: Property, plant and equipment classified as held for sale | (433,688) | (433,688) | |
Beginning Balance | 7,137,932 | 7,342,705 | |
Additions | 2,007,767 | ||
Disposals | (30,066) | ||
Reclassifications | 1,535,619 | ||
Depreciation expenses | (1,837,482) | ||
Exchange adjustments | (43) | ||
Ending Balance | 7,571,620 | ||
Ending Balance | 8,813,727 | 7,137,932 | |
Tools [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | 524,443 | ||
Less: Property, plant and equipment classified as held for sale | (90,460) | (90,460) | |
Beginning Balance | 433,983 | 349,774 | |
Additions | 571,601 | ||
Disposals | (2,302) | ||
Reclassifications | 44,882 | ||
Depreciation expenses | (357,695) | ||
Ending Balance | 524,443 | ||
Ending Balance | 690,469 | 433,983 | |
Other equipment [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | 566,623 | ||
Less: Property, plant and equipment classified as held for sale | (168,314) | (168,314) | |
Beginning Balance | 398,309 | 403,560 | |
Additions | 195,957 | ||
Disposals | (1,865) | ||
Reclassifications | 22,149 | ||
Depreciation expenses | (192,934) | ||
Impairment losses | (956) | ||
Exchange adjustments | (88) | ||
Ending Balance | 566,623 | ||
Ending Balance | 420,572 | 398,309 | |
Construction in progress and equipment to be inspected [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | 1,627,816 | ||
Less: Property, plant and equipment classified as held for sale | (631,315) | (631,315) | |
Beginning Balance | 996,501 | 826,103 | |
Additions | 1,716,268 | ||
Reclassifications | (1,744,050) | ||
Ending Balance | 1,627,816 | ||
Ending Balance | 968,719 | 996,501 | |
Gross carrying amount [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | 67,619,367 | 2,281,355 | |
Beginning Balance | 64,645,094 | ||
Ending Balance | 67,619,367 | ||
Ending Balance | 63,638,420 | 2,147,045 | |
Gross carrying amount [member] | Land [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | 452,738 | ||
Beginning Balance | 452,738 | ||
Ending Balance | 452,738 | ||
Ending Balance | 452,738 | ||
Gross carrying amount [member] | Buildings [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | 11,183,278 | ||
Beginning Balance | 10,700,236 | ||
Ending Balance | 11,183,278 | ||
Ending Balance | 9,809,970 | ||
Gross carrying amount [member] | Machinery and equipment [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | 47,002,228 | ||
Beginning Balance | 45,945,380 | ||
Ending Balance | 47,002,228 | ||
Ending Balance | 45,778,207 | ||
Gross carrying amount [member] | Tools [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | 3,999,894 | ||
Beginning Balance | 3,673,636 | ||
Ending Balance | 3,999,894 | ||
Ending Balance | 4,004,703 | ||
Gross carrying amount [member] | Other equipment [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | 3,353,413 | ||
Beginning Balance | 3,047,001 | ||
Ending Balance | 3,353,413 | ||
Ending Balance | 2,624,083 | ||
Gross carrying amount [member] | Construction in progress and equipment to be inspected [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | 1,627,816 | ||
Beginning Balance | 826,103 | ||
Ending Balance | 1,627,816 | ||
Ending Balance | 968,719 | ||
Accumulated depreciation and impairment [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | (52,088,181) | (1,757,361) | |
Beginning Balance | (50,433,534) | ||
Ending Balance | (52,088,181) | ||
Ending Balance | (48,373,109) | $ (1,632,021) | |
Accumulated depreciation and impairment [member] | Buildings [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | (6,395,332) | ||
Beginning Balance | (5,863,556) | ||
Ending Balance | (6,395,332) | ||
Ending Balance | (5,890,884) | ||
Accumulated depreciation and impairment [member] | Machinery and equipment [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | (39,430,608) | ||
Beginning Balance | (38,602,675) | ||
Ending Balance | (39,430,608) | ||
Ending Balance | (36,964,480) | ||
Accumulated depreciation and impairment [member] | Tools [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | (3,475,451) | ||
Beginning Balance | (3,323,862) | ||
Ending Balance | (3,475,451) | ||
Ending Balance | (3,314,234) | ||
Accumulated depreciation and impairment [member] | Other equipment [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Beginning Balance | (2,786,790) | ||
Beginning Balance | (2,643,441) | ||
Ending Balance | (2,786,790) | ||
Ending Balance | $ (2,203,511) | ||
Property, plant and equipment, net, including held for sale [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Additions | 4,690,995 | ||
Disposals | (9,026) | ||
Depreciation expenses | (3,228,441) | ||
Impairment losses | (8,198) | ||
Exchange adjustments | (125,704) | ||
Property, plant and equipment, net, including held for sale [member] | Buildings [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Additions | 255,916 | ||
Disposals | (51) | ||
Reclassifications | 372,448 | ||
Depreciation expenses | (631,233) | ||
Exchange adjustments | (45,814) | ||
Property, plant and equipment, net, including held for sale [member] | Machinery and equipment [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Additions | 934,913 | ||
Disposals | (8,624) | ||
Reclassifications | 1,509,798 | ||
Depreciation expenses | (2,188,976) | ||
Exchange adjustments | (18,196) | ||
Property, plant and equipment, net, including held for sale [member] | Tools [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Additions | 358,413 | ||
Reclassifications | 22,882 | ||
Depreciation expenses | (201,755) | ||
Exchange adjustments | (4,871) | ||
Property, plant and equipment, net, including held for sale [member] | Other equipment [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Additions | 351,850 | ||
Disposals | (351) | ||
Reclassifications | 37,373 | ||
Depreciation expenses | (206,477) | ||
Impairment losses | (8,198) | ||
Exchange adjustments | (11,134) | ||
Property, plant and equipment, net, including held for sale [member] | Construction in progress and equipment to be inspected [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Additions | 2,789,903 | ||
Reclassifications | (1,942,501) | ||
Exchange adjustments | $ (45,689) |
Property, Plant and Equipmen104
Property, Plant and Equipment, Net - Capitalization Interest and Capitalization Interest Rate Applied Related to Property, Plant and Equipment (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Capitalization interest | $ 18,769 | $ 633 | |
Capitalization interest rate applied | 1.7624% | 1.7624% | |
Bottom of range [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Capitalization interest rate applied | 1.7456% | ||
Top of range [member] | |||
Disclosure of detailed information about property, plant and equipment [Line Items] | |||
Capitalization interest | $ 13,435 | ||
Capitalization interest rate applied | 3.6166% |
Inventories - Summary of Invent
Inventories - Summary of Inventories (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of inventories [Line Items] | |||
Raw materials | $ 1,720,734 | $ 58,054 | $ 1,647,347 |
Work in process | 176,089 | 5,941 | 176,620 |
Finished goods | 32,416 | 1,094 | 54,015 |
Inventories | 1,929,239 | $ 65,089 | 1,877,982 |
Gross carrying amount [member] | |||
Disclosure of inventories [Line Items] | |||
Raw materials | 1,769,917 | 1,787,810 | |
Work in process | 180,252 | 190,823 | |
Finished goods | 32,784 | 54,190 | |
Inventories | 1,982,953 | 2,032,823 | |
Allowance for impairment losses [member] | |||
Disclosure of inventories [Line Items] | |||
Raw materials | (49,183) | (140,463) | |
Work in process | (4,163) | (14,203) | |
Finished goods | (368) | (175) | |
Inventories | $ (53,714) | $ (154,841) |
Inventories - Cost of Inventori
Inventories - Cost of Inventories Recognized as an Expense (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Analysis of income and expense [abstract] | ||||
Cost of revenue | $ 14,766,555 | $ 498,197 | $ 14,670,711 | |
Loss on abandonment | 38,301 | 1,292 | 7,098 | |
Allowance for (reversal of) inventory valuation and obsolescence loss | (101,127) | (3,412) | 67,663 | |
Cost of revenue | $ 14,703,729 | $ 496,077 | $ 14,745,472 | $ 14,685,514 |
Accounts and Notes and Other107
Accounts and Notes and Other Receivables - Summary of Accounts and Notes and Other Receivables (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of financial assets [Line Items] | |||
Accounts and notes receivable | $ 4,015,734 | $ 135,484 | $ 4,140,246 |
Other receivables | 56,716 | 1,914 | 57,411 |
Accounts and notes and other receivables | 4,072,450 | 137,398 | 4,197,657 |
Gross carrying amount [member] | |||
Disclosure of financial assets [Line Items] | |||
Other receivables | 56,716 | 1,914 | 57,411 |
Gross carrying amount [member] | Accounts receivable [member] | |||
Disclosure of financial assets [Line Items] | |||
Accounts and notes receivable | 4,013,705 | 135,415 | 4,138,580 |
Gross carrying amount [member] | Notes receivable [member] | |||
Disclosure of financial assets [Line Items] | |||
Accounts and notes receivable | $ 2,029 | $ 69 | 1,753 |
Allowance for impairment losses [member] | |||
Disclosure of financial assets [Line Items] | |||
Accounts and notes receivable | $ (87) |
Accounts and Notes and Other108
Accounts and Notes and Other Receivables - Movements in Allowance for Impairment of Accounts and Other Receivables (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | |
Accounts receivable [member] | |||
Disclosure of financial assets [Line Items] | |||
Beginning balance | $ 87 | ||
Reversal of allowance for impairment losses | (87) | ||
Impairment losses recognized | $ 87 | ||
Ending balance | 87 | ||
Other receivables [member] | |||
Disclosure of financial assets [Line Items] | |||
Beginning balance | 0 | 0 | |
Impairment losses recognized | 0 | ||
Ending balance | $ 0 | $ 0 | $ 0 |
Accounts and Notes and Other109
Accounts and Notes and Other Receivables - Ageing of Accounts Receivable which are Past Due but not Impaired (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of financial assets [Line Items] | |||
Accounts and notes receivable | $ 4,015,734 | $ 135,484 | $ 4,140,246 |
Accounts receivable [member] | Financial assets past due but not impaired [member] | |||
Disclosure of financial assets [Line Items] | |||
Accounts and notes receivable | 15,872 | 535 | 27,310 |
Accounts receivable [member] | Financial assets past due but not impaired [member] | Less than or equal to 1 month [member] | |||
Disclosure of financial assets [Line Items] | |||
Accounts and notes receivable | 10,482 | 354 | 24,141 |
Accounts receivable [member] | Financial assets past due but not impaired [member] | 1 - 2 months [member] | |||
Disclosure of financial assets [Line Items] | |||
Accounts and notes receivable | 477 | 16 | 728 |
Accounts receivable [member] | Financial assets past due but not impaired [member] | 2 - 3 months [member] | |||
Disclosure of financial assets [Line Items] | |||
Accounts and notes receivable | 426 | 14 | 183 |
Accounts receivable [member] | Financial assets past due but not impaired [member] | 3 - 4 months [member] | |||
Disclosure of financial assets [Line Items] | |||
Accounts and notes receivable | 1,431 | 48 | 245 |
Accounts receivable [member] | Financial assets past due but not impaired [member] | More than 4 months [member] | |||
Disclosure of financial assets [Line Items] | |||
Accounts and notes receivable | $ 3,056 | $ 103 | $ 2,013 |
Cash and Cash Equivalents - Sum
Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2016USD ($) | Dec. 31, 2015TWD ($) | Dec. 31, 2014TWD ($) |
Cash and cash equivalents [abstract] | ||||||
Short-term deposits | $ 3,883,614 | $ 131,026 | $ 3,854,354 | |||
Cash | 470 | 16 | 525 | |||
Cash at banks | 4,151,630 | 140,068 | 4,106,384 | |||
Cash and cash equivalents, different from consolidated statements of financial position | 8,035,714 | 271,110 | 7,961,263 | $ 268,599 | $ 12,127,350 | $ 15,265,153 |
Less: Cash and cash equivalents classified as non-current assets held for sale | (389,897) | |||||
Cash and cash equivalents | $ 8,035,714 | $ 271,110 | $ 7,571,366 |
Cash and Cash Equivalents - Add
Cash and Cash Equivalents - Additional Information (Detail) - TWD ($) | Dec. 31, 2017 | Dec. 31, 2016 |
Cash and cash equivalents [abstract] | ||
Cash and cash equivalents classified and shown as "non-current assets held for sale" | $ 389,897,000 | |
Cash and cash equivalents pledge | $ 0 | $ 0 |
Non-current Assets Held for 112
Non-current Assets Held for Sale and Discontinued Operations - Additional Information (Detail) $ in Thousands, $ in Thousands | Mar. 31, 2017 | Mar. 31, 2017TWD ($) | Mar. 31, 2017USD ($) |
Noncurrent assets or disposal groups classified as held for sale or as held for distribution to owners [Line Items] | |||
Cash consideration | $ 2,230,544 | $ 75,255 | |
Gain loss on disposal of discontinued operations | $ 1,843,234 | $ 62,187 | |
Percentage of disposal of equity interest | 54.98% | 54.98% | |
Fair value of gain loss on disposal of equity interest | $ 999,630 | $ 33,726 | |
Percentage of fair value gain on remeasurement of retained investment | 45.02% | 45.02% | |
Fair value of gain on remeasurement of retained investment | $ 843,604 | $ 28,461 | |
ChipMOS TECHNOLOGIES (Shanghai) LTD. [member] | |||
Noncurrent assets or disposal groups classified as held for sale or as held for distribution to owners [Line Items] | |||
Equity interest in subsidiary to be sold | 54.98% | 54.98% | 54.98% |
Non-current Assets Held for 113
Non-current Assets Held for Sale and Discontinued Operations - Cash Flow Information of Discontinued Operations (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | ||||
Net cash generated from (used in) operating activities | $ (109,079) | $ (3,680) | $ (1,109,029) | $ 1,072,628 |
Net cash used in investing activities | (272,925) | (9,208) | (1,331,564) | (205,292) |
Net cash generated from (used in) financing activities | 461,312 | 15,564 | 1,463,664 | (91,234) |
Effect of foreign exchange rate changes | (19,874) | (671) | (61,336) | (18,636) |
Net increase (decrease) in cash and cash equivalents | $ 59,434 | $ 2,005 | $ (1,038,265) | $ 757,466 |
Non-current Assets Held for 114
Non-current Assets Held for Sale and Discontinued Operations - Assets, Liabilities and Equity of Disposal Group Classified as Held for Sale (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2016USD ($) | Dec. 31, 2015TWD ($) |
Noncurrent assets or disposal groups classified as held for sale or as held for distribution to owners [Line Items] | |||||
Cash and cash equivalents | $ 8,035,714 | $ 271,110 | $ 7,571,366 | ||
Accounts receivable | 4,015,734 | 135,484 | 4,140,246 | ||
Other receivables | 56,716 | 1,914 | 57,411 | ||
Inventories | 1,929,239 | 65,089 | 1,877,982 | ||
Other current financial assets | 1,600 | ||||
Property, plant and equipment, net | 15,265,311 | 515,024 | 13,497,218 | $ 455,372 | $ 14,211,560 |
Refundable deposits | 21,342 | 720 | 21,321 | ||
Other non-current assets | 35,474 | 1,197 | 181,692 | ||
Assets of disposal group classified as non-current assets for sale | 3,105,071 | ||||
Accounts payable | 687,960 | 23,210 | 825,062 | ||
Other payables | 1,980,182 | 66,808 | 1,412,054 | ||
Receipts in advance | 5,209 | 176 | 1,324 | ||
Bank loans - current portion | 2,143,168 | 72,307 | 1,062,285 | ||
Lease payable - current | 11,785 | 398 | 11,291 | ||
Other current liabilities | 31,275 | 1,055 | 43,676 | ||
Bank loans - non-current | 7,498,853 | 252,998 | 9,687,720 | ||
Lease payable - non-current | 18,057 | 609 | 29,311 | ||
Long-term deferred revenue | 24,898 | 840 | |||
Guarantee deposits | $ 1,371 | $ 46 | 1,404 | ||
Liabilities of disposal group classified as liabilities directly related to non-current assets held for sale | 587,639 | ||||
Foreign currency translation reserve | 287,645 | ||||
Non-current assets held for sale [member] | |||||
Noncurrent assets or disposal groups classified as held for sale or as held for distribution to owners [Line Items] | |||||
Cash and cash equivalents | 389,897 | ||||
Accounts receivable | 230,523 | ||||
Other receivables | 202,909 | ||||
Inventories | 136,842 | ||||
Prepayments | 15,943 | ||||
Other current financial assets | 1,193 | ||||
Property, plant and equipment, net | 2,033,968 | ||||
Refundable deposits | 113 | ||||
Prepaid rent - non-current portion | 82,291 | ||||
Other non-current assets | 11,392 | ||||
Accounts payable | 98,973 | ||||
Other payables | 177,178 | ||||
Receipts in advance | 6,687 | ||||
Bank loans - current portion | 7,614 | ||||
Lease payable - current | 27,702 | ||||
Other current liabilities | 34,276 | ||||
Bank loans - non-current | 106,461 | ||||
Lease payable - non-current | 27,702 | ||||
Long-term deferred revenue | 100,395 | ||||
Guarantee deposits | $ 651 |
Non-current Assets Held for 115
Non-current Assets Held for Sale and Discontinued Operations - Cumulative Income or Expense Recognized in Other Comprehensive Income Relating to Disposal Group Classified as Held for Sale (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | ||||
Exchange differences on translation of foreign operations | $ (287,645) | $ (9,705) | $ (195,972) | $ (27,893) |
Non-current Assets Held for 116
Non-current Assets Held for Sale and Discontinued Operations - Results of Discontinued Operations (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Noncurrent assets or disposal groups classified as held for sale or as held for distribution to owners [Line Items] | ||||
Revenue | $ 17,940,855 | $ 605,292 | $ 18,387,593 | $ 18,837,089 |
Cost of revenue | (14,703,729) | (496,077) | (14,745,472) | (14,685,514) |
Other operating income (expenses), net | 692,834 | 23,375 | 90,306 | 105,051 |
Profit (loss) from discontinued operations | 1,814,953 | 61,233 | (122,105) | (34,233) |
Income tax expense | 0 | 0 | 0 | 0 |
Loss from discontinued operations after income tax | (28,281) | (954) | (122,105) | (34,233) |
Gain on disposal of discontinued operations | 1,843,234 | 62,187 | ||
Profit (loss) from discontinued operations | 1,814,953 | 61,233 | (122,105) | (34,233) |
Discontinued operations: ChipMOS Shanghai [member] | ||||
Noncurrent assets or disposal groups classified as held for sale or as held for distribution to owners [Line Items] | ||||
Revenue | 227,095 | 7,662 | 1,005,166 | 1,032,302 |
Cost of revenue | (195,078) | (6,582) | (986,004) | (1,050,075) |
Operating expenses | (58,840) | (1,985) | (179,178) | (51,910) |
Other operating income (expenses), net | 1,429 | 48 | 13,753 | 8,469 |
Non-operating income (expenses), net | (2,887) | (97) | 24,158 | 26,981 |
Profit (loss) from discontinued operations | (28,281) | (954) | (122,105) | (34,233) |
Profit (loss) from discontinued operations | $ 1,814,953 | $ 61,233 | $ (122,105) | $ (34,233) |
Issued Capital - Summary of Iss
Issued Capital - Summary of Issued Capital (Detail) shares in Thousands, $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($)shares | Dec. 31, 2017USD ($)shares | Dec. 31, 2016TWD ($)shares | Dec. 31, 2015TWD ($)shares |
Disclosure of classes of share capital [abstract] | ||||
Authorized shares, Ordinary shares | 970,000 | 970,000 | 1,450,000 | 970,000 |
Ordinary shares | 886,297 | 886,297 | 886,966 | 896,206 |
Issued capital | $ 8,862,971 | $ 299,021 | $ 8,869,663 | $ 8,962,066 |
Issued Capital - Additional Inf
Issued Capital - Additional Information (Detail) - TWD ($) | Oct. 31, 2016 | Jun. 17, 2015 | Dec. 31, 2015 | Dec. 31, 2017 | Dec. 31, 2016 | May 12, 2016 | Feb. 04, 2016 | Aug. 10, 2015 | Dec. 31, 2014 |
Disclosure of classes of share capital [line items] | |||||||||
Ordinary shares par value | $ 10 | ||||||||
Number of shares issued in order to exchange for the shares of ThaiLin | 35,932,000 | ||||||||
Ordinary shares [member] | |||||||||
Disclosure of classes of share capital [line items] | |||||||||
Number of shares issued in order to exchange for the shares of ThaiLin | 35,932,000 | 35,932,000 | |||||||
Maximum value of shares approved for repurchase | $ 600,000,000 | $ 600,000,000 | $ 826,800,000 | ||||||
Number of shares repurchased, retired and cancelled under share repurchase program | 20,000,000 | ||||||||
Number of shares repurchased under share repurchase program | 30,000,000 | 30,000,000 | |||||||
Number of shares issued | 896,206,000 | 886,297,000 | 886,966,000 | 864,619,000 | |||||
Number of shares represented by each unit of ADS | 20 | ||||||||
Number of shares outstanding | 188,630,000 | ||||||||
American depositary share (each representing 20 common shares) [member] | |||||||||
Disclosure of classes of share capital [line items] | |||||||||
Number of shares issued | 25,620,267 | ||||||||
Number of shares represented by each unit of ADS | 20 | ||||||||
Number of shares outstanding | 9,431,486 |
Issued Capital - Movement of Or
Issued Capital - Movement of Ordinary Shares Issued (Detail) pure in Thousands | Oct. 31, 2016shares | Jun. 17, 2015shares | Dec. 31, 2017shares | Dec. 31, 2016shares | Dec. 31, 2015shares |
Disclosure of classes of share capital [line items] | |||||
Transactions with non-controlling interests (Note 28) | 35,932,000 | ||||
Cancellation of ordinary shares from capital reorganization (Note 29) | (522,080,000) | ||||
Ordinary shares [member] | |||||
Disclosure of classes of share capital [line items] | |||||
Beginning balance | 886,966,000 | 896,206,000 | 864,619,000 | ||
Transactions with non-controlling interests (Note 28) | 35,932,000 | 35,932,000 | |||
Restricted shares | 435 | 15,752 | |||
Unearned restricted shares - cancelled | (669) | (97) | |||
Share cancellation | (20,000,000) | ||||
Issuance of ordinary shares for capital reorganization (Note 29) | 512,405,000 | 512,405,000 | |||
Cancellation of ordinary shares from capital reorganization (Note 29) | (522,080,000) | ||||
Ending balance | 886,297,000 | 886,966,000 | 896,206,000 |
Capital Surplus and Retained120
Capital Surplus and Retained Earnings - Details of Capital Surplus (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) |
Disclosure of reserves within equity [abstract] | ||||
Share premium | $ 5,873,743 | $ 198,169 | $ 6,473,471 | $ 2,501,767 |
Share-based payment | 849,482 | |||
Restricted shares | 390,401 | 13,171 | 408,051 | 397,296 |
Others | 7,304 | 247 | 7,304 | 7,304 |
Capital surplus | $ 6,271,448 | $ 211,587 | $ 6,888,826 | $ 3,755,849 |
Capital Surplus and Retained121
Capital Surplus and Retained Earnings - Additional Information (Detail) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure of reserves within equity [abstract] | |
Maximum percentage of capital surplus to paid-in-capital required by the ROC Securities and Exchange Act | 10.00% |
Percentage of income transferred to legal reserve | 10.00% |
Threshold percentage over capital stock to be distributed out of legal reserve | 25.00% |
Capital Surplus and Retained122
Capital Surplus and Retained Earnings - Details of Retained Earnings (Detail) - TWD ($) $ / shares in Units, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | |
Disclosure of reserves within equity [abstract] | |||
Legal reserve | $ 28,680 | $ 223,047 | $ 331,863 |
Cash dividend | 257,026 | $ 1,792,553 | $ 1,999,225 |
Cash distribution from capital surplus | $ 599,728 | ||
Cash dividend, distribution per share | $ 0.30 | $ 2.09 | $ 2.22 |
Cash distribution from capital surplus | $ 0.70 |
Treasury Stock - Movement of Tr
Treasury Stock - Movement of Treasury Stock (Detail) shares in Thousands, $ in Thousands, $ in Thousands | 12 Months Ended | ||||
Dec. 31, 2017TWD ($)shares | Dec. 31, 2017USD ($)shares | Dec. 31, 2016TWD ($)shares | Dec. 31, 2016USD ($)shares | Dec. 31, 2015TWD ($)shares | |
Beginning balance | $ | $ 1,007,654 | ||||
Treasury stock (repurchased) | $ | $ 1,007,654 | $ 1,862,362 | |||
Ending balance | $ 1,007,654 | $ 33,997 | $ 1,007,654 | ||
Treasury stock [member] | |||||
Treasury stock shares at beginning balance | 30,085 | 30,085 | 0 | 0 | 0 |
Treasury stock shares (repurchased) | 30,085 | 30,085 | 20,000 | ||
Treasury stock shares (cancelled) | 0 | 0 | (20,000) | ||
Treasury stock shares at ending balance | 30,085 | 30,085 | 30,085 | 30,085 | 0 |
Beginning balance | $ 1,007,654 | $ 33,997 | $ 0 | $ 0 | |
Treasury stock (repurchased) | 0 | 0 | 1,007,654 | 633,737 | |
Treasury stock (cancelled) | 0 | 0 | (633,737) | ||
Ending balance | $ 1,007,654 | $ 33,997 | $ 1,007,654 | $ 33,997 | $ 0 |
Long-term Bank Loans - Summary
Long-term Bank Loans - Summary of Long-term Bank Loans (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2017USD ($) | |
Disclosure of detailed information about borrowings [Line Items] | |||
Long-term bank loans | $ 9,642,021 | $ 10,750,005 | $ 325,305 |
Less: Current portion (fee included) | (2,143,168) | (1,062,285) | (72,307) |
Syndicated bank loans, excluding current portion | 7,498,853 | 9,687,720 | 252,998 |
Long-term bank loans [Member] | |||
Disclosure of detailed information about borrowings [Line Items] | |||
Unused credit lines of long-term bank loans | 2,400,000 | 2,400,000 | 0 |
Gross carrying amount [member] | Syndicated Bank Loans Repayable from December 2017 to June 2021 [Member] | |||
Disclosure of detailed information about borrowings [Line Items] | |||
Long-term bank loans | $ 9,675,301 | $ 10,800,000 | $ 326,427 |
Period and payment term | Borrowing period is from June 30, 2016 to June 30, 2021; interest is repayable monthly; principal is repayable semi-annually from December 30, 2017. | Borrowing period is from June 30, 2016 to June 30, 2021; interest is repayable monthly; principal is repayable semi-annually from December 30, 2017. | |
Interest rate range | 1.7895% | 1.7895% | 1.7895% |
Syndicated loan fee [Member] | |||
Disclosure of detailed information about borrowings [Line Items] | |||
Long-term bank loans | $ (33,280) | $ (49,995) | $ (1,122) |
Long-term Bank Loans - Addition
Long-term Bank Loans - Additional Information (Detail) $ in Billions | May 16, 2016TWD ($)Bank |
Disclosure of detailed information about borrowings [Line Items] | |
Number of banks in syndicate | Bank | 10 |
Syndicated loan [Member] | |
Disclosure of detailed information about borrowings [Line Items] | |
Principal amount of loan | $ | $ 13.2 |
Maturity of loan | Five years |
Long-term Bank Loans - Details
Long-term Bank Loans - Details of Repayment Schedule in Respect of Bank Loans (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of detailed information about borrowings [Line Items] | |||
Bank loans | $ 9,642,021 | $ 325,305 | $ 10,750,005 |
Within 1 year [member] | |||
Disclosure of detailed information about borrowings [Line Items] | |||
Bank loans | 2,143,168 | 72,307 | 1,062,285 |
2-5 years [member] | |||
Disclosure of detailed information about borrowings [Line Items] | |||
Bank loans | $ 7,498,853 | $ 252,998 | $ 9,687,720 |
Retirement Benefit Plans - Addi
Retirement Benefit Plans - Additional Information (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2017TWD ($)YearsUnit | Dec. 31, 2017USD ($)YearsUnit | Dec. 31, 2016TWD ($) | |
Disclosure of defined benefit plans [Line Items] | |||
Defined benefit plans expected contribution | $ 26,910 | $ 908 | |
Weighted average duration of the defined benefit obligation | Years | 13.4 | 13.4 | |
Defined benefit pension plan [Member] | |||
Disclosure of defined benefit plans [Line Items] | |||
Number of units accrued in first tranche | 2 | 2 | |
Duration of first tranche | First 15 years | First 15 years | |
Number of units accrued in second tranche | 1 | 1 | |
Duration of second tranche | Thereafter 15 years | Thereafter 15 years | |
Maximum number of units accruable under the pension plan | 45 | 45 | |
Benefit measurement period | 6 months | 6 months | |
Employer contribution percentage | 2.00% | 2.00% | |
Defined contribution pension plan [member] | |||
Disclosure of defined benefit plans [Line Items] | |||
Employer contribution percentage | 6.00% | 6.00% | 6.00% |
Pension costs under defined contribution pension plans | $ 190,106 | $ 6,414 | $ 174,096 |
Retirement Benefit Plans - Defi
Retirement Benefit Plans - Defined Benefit Plans Amounts Recognized in Statements of Financial Position (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2016USD ($) | Dec. 31, 2015TWD ($) |
Surplus (deficit) in plan [abstract] | |||||
Present value of defined benefit obligations | $ (838,543) | $ (28,291) | $ (894,163) | ||
Fair value of plan assets | 360,017 | 12,146 | 347,195 | ||
Net defined benefit liability | $ (478,526) | $ (16,145) | $ (546,968) | $ (18,454) | $ (519,471) |
Retirement Benefit Plans - Move
Retirement Benefit Plans - Movements in Net Defined Benefit Liability (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | |
Disclosure of net defined benefit liability (asset) [Line Items] | |||
Beginning balance | $ (546,968) | $ (18,454) | $ (519,471) |
Current service cost | (386) | (13) | (321) |
Interest (expense) income | (8,010) | (270) | (8,876) |
Total | (555,364) | (18,737) | (528,668) |
Return of plan assets (not including the amount included in interest income or expense) | (1,842) | (62) | (3,413) |
Financial assumption movement effect | 28,506 | 962 | (31,294) |
Experience adjustments | 24,174 | 815 | (8,676) |
Gain (loss) on remeasurement, net defined benefit liability (asset) | 50,838 | 1,715 | (43,383) |
Pension fund contribution | 26,000 | 877 | 25,083 |
Ending balance | (478,526) | $ (16,145) | (546,968) |
Present Value of Defined Benefit Obligation [member] | |||
Disclosure of net defined benefit liability (asset) [Line Items] | |||
Beginning balance | (894,163) | (844,166) | |
Current service cost | (386) | (321) | |
Interest (expense) income | (13,236) | (14,644) | |
Total | (907,785) | (859,131) | |
Financial assumption movement effect | 28,506 | (31,294) | |
Experience adjustments | 24,174 | (8,676) | |
Gain (loss) on remeasurement, net defined benefit liability (asset) | 52,680 | (39,970) | |
Paid pension | 16,562 | 4,938 | |
Ending balance | (838,543) | (894,163) | |
Fair Value of Plan Assets [member] | |||
Disclosure of net defined benefit liability (asset) [Line Items] | |||
Beginning balance | 347,195 | 324,695 | |
Interest (expense) income | 5,226 | 5,768 | |
Total | 352,421 | 330,463 | |
Return of plan assets (not including the amount included in interest income or expense) | (1,842) | (3,413) | |
Gain (loss) on remeasurement, net defined benefit liability (asset) | (1,842) | (3,413) | |
Pension fund contribution | 26,000 | 25,083 | |
Paid pension | (16,562) | (4,938) | |
Ending balance | $ 360,017 | $ 347,195 |
Retirement Benefit Plans - Prin
Retirement Benefit Plans - Principal Actuarial Assumptions Used and Sensitivity Analysis of Present Value of Defined Benefit Obligation Effected by Changes of Principal Actuarial Assumptions (Detail) | Dec. 31, 2017 | Dec. 31, 2016 |
Disclosure of sensitivity analysis for actuarial assumptions [abstract] | ||
Discount rate used in determining present values | 1.75% | 1.50% |
Expected future salary increases | 3.50% | 3.50% |
Retirement Benefit Plans - Sens
Retirement Benefit Plans - Sensitivity Analysis of Present Value of Defined Benefit Obligations Effected by Changes of Significant Actuarial Assumptions (Detail) - TWD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 |
Actuarial assumption of discount rates [member] | ||
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] | ||
Percentage increase in assumption | 0.25% | 0.25% |
Effect on present value of defined benefit obligations due to increase in assumption | $ (27,192) | $ (31,294) |
Percentage decrease in assumption | 0.25% | 0.25% |
Effect on present value of defined benefit obligations due to decrease in assumption | $ 28,506 | $ 32,893 |
Actuarial assumption of expected rates of salary increases [member] | ||
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] | ||
Percentage increase in assumption | 0.25% | 0.25% |
Effect on present value of defined benefit obligations due to increase in assumption | $ 27,955 | $ 32,174 |
Percentage decrease in assumption | 0.25% | 0.25% |
Effect on present value of defined benefit obligations due to decrease in assumption | $ (26,816) | $ (30,787) |
Retirement benefit plans - Anal
Retirement benefit plans - Analysis of Timing of the Future Pension Payment (Detail) - Dec. 31, 2017 $ in Thousands, $ in Thousands | TWD ($) | USD ($) |
Disclosure of net defined benefit liability (asset) [Line Items] | ||
Defined benefit plan expected future pension payments | $ 341,132 | $ 11,509 |
Within 1 year [member] | ||
Disclosure of net defined benefit liability (asset) [Line Items] | ||
Defined benefit plan expected future pension payments | 28,007 | 945 |
1-2 years [member] | ||
Disclosure of net defined benefit liability (asset) [Line Items] | ||
Defined benefit plan expected future pension payments | 31,702 | 1,070 |
2-5 years [member] | ||
Disclosure of net defined benefit liability (asset) [Line Items] | ||
Defined benefit plan expected future pension payments | 102,703 | 3,465 |
6-10 years [member] | ||
Disclosure of net defined benefit liability (asset) [Line Items] | ||
Defined benefit plan expected future pension payments | $ 178,720 | $ 6,029 |
Other Payables - Summary of Oth
Other Payables - Summary of Other Payables (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Trade and other current payables [abstract] | |||
Salaries and bonus payable | $ 601,239 | $ 20,285 | $ 443,993 |
Interest payable | 2,854 | 96 | 1,059 |
Accrued pension costs | 32,402 | 1,093 | 29,930 |
Employees' bonus | 371,912 | 12,548 | 70,553 |
Directors' remuneration | 18,596 | 627 | 3,528 |
Other expense payable | 953,179 | 32,159 | 862,991 |
Other payables | $ 1,980,182 | $ 66,808 | $ 1,412,054 |
Provisions - Current - Movement
Provisions - Current - Movements in Provisions (Detail) - 12 months ended Dec. 31, 2017 $ in Thousands, $ in Thousands | TWD ($) | USD ($) |
Disclosure of other provisions [Line Items] | ||
Beginning balance | $ 80,719 | $ 2,723 |
Provision | 236,552 | 7,981 |
Payment | (189,960) | (6,409) |
Ending balance | 127,311 | $ 4,295 |
Provisions for sales allowance [member] | ||
Disclosure of other provisions [Line Items] | ||
Beginning balance | 66,065 | |
Provision | 117,234 | |
Payment | (113,143) | |
Ending balance | 70,156 | |
Provisions for deficiency compensation [member] | ||
Disclosure of other provisions [Line Items] | ||
Beginning balance | 14,654 | |
Provision | 119,318 | |
Payment | (76,817) | |
Ending balance | $ 57,155 |
Short-term Bank Loans - Summary
Short-term Bank Loans - Summary of Short-term Bank Loans (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) |
Disclosure of detailed information about borrowings [Line Items] | ||
Unsecured bank loans | $ 969,353 | $ 32,704 |
Bottom of range [member] | ||
Disclosure of detailed information about borrowings [Line Items] | ||
Annual interest rate | 0.55% | 0.55% |
Top of range [member] | ||
Disclosure of detailed information about borrowings [Line Items] | ||
Annual interest rate | 1.71% | 1.71% |
Short-term Bank Loans - Unused
Short-term Bank Loans - Unused Credit Lines of Short-term Bank Loans (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2016USD ($) |
Short-term bank loans [member] | ||||
Disclosure of detailed information about borrowings [Line Items] | ||||
Unused credit lines of short-term bank loans | $ 3,028,357 | $ 80,000 | $ 3,119,000 | $ 80,000 |
Significant Commitments and 137
Significant Commitments and Contingencies - Future Minimum Lease Payments under Operating Lease Contracts (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of finance lease and operating lease by lessee [Line Items] | |||
Minimum finance lease payments payable | $ 309,423 | $ 10,439 | $ 357,154 |
Within 1 year [member] | |||
Disclosure of finance lease and operating lease by lessee [Line Items] | |||
Minimum finance lease payments payable | 39,342 | 1,327 | 39,929 |
2-5 years [member] | |||
Disclosure of finance lease and operating lease by lessee [Line Items] | |||
Minimum finance lease payments payable | 130,182 | 4,392 | 140,328 |
More Than 5 Years [member] | |||
Disclosure of finance lease and operating lease by lessee [Line Items] | |||
Minimum finance lease payments payable | $ 139,899 | $ 4,720 | $ 176,897 |
Significant Commitments and 138
Significant Commitments and Contingencies - Capital Expenditures that are Contracted for, but not Provided for (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of detailed information about property, plant and equipment [abstract] | |||
Property plant and equipment, Contracted capital expenditures | $ 2,178,262 | $ 73,491 | $ 1,615,460 |
Significant Commitments and 139
Significant Commitments and Contingencies - Additional Information (Detail) $ in Thousands, $ in Thousands | Oct. 31, 2016TWD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2015 |
Capital commitments [abstract] | |||||
Amount guaranteed by Bank of Taiwan | $ 131,000 | $ 97,500 | $ 3,289 | ||
Reduction of unappropriated retained earnings through capital transfer | $ (5,052,343) | $ (5,052,343) | |||
Unappropriated retained earnings percentage | 10.00% | 10.00% |
Transactions with Non-contro140
Transactions with Non-controlling Interests - Additional Information (Detail) $ / shares in Units, shares in Thousands, $ in Thousands | Jun. 17, 2015TWD ($)$ / sharesshares | Jun. 16, 2015 | Dec. 31, 2015TWD ($) |
Disclosure of noncontrolling interests [Line Items] | |||
Merger, cash offered for shareholders | $ / shares | $ 12.5 | ||
Merger, ratio of ordinary share exchange for each share held | 0.311 | ||
Merger, number of shares issued by surviving company | shares | 35,932 | ||
Merger, cash paid by surviving company to exchange for shares | $ | $ 1,444,224 | $ 1,444,224 | |
Merger, percentage of shares exchanged | 52.46% | ||
ThaiLin Semiconductor Corp. [member] | |||
Disclosure of noncontrolling interests [Line Items] | |||
Merger, percentage of voting share held | 47.54% | ||
ChipMOS TECHNOLOGIES (BVI) LTD. [member] | |||
Disclosure of noncontrolling interests [Line Items] | |||
Percentage of ownership on outstanding shares | 100.00% | ||
ChipMOS TECHNOLOGIES (Shanghai) LTD. [member] | |||
Disclosure of noncontrolling interests [Line Items] | |||
Percentage of ownership on outstanding shares | 100.00% |
Transactions With Non-contro141
Transactions With Non-controlling Interests - Summary of Effect on Equity Attributed to the Company from Transactions with Non-controlling Interests (Detail) $ in Thousands | 12 Months Ended |
Dec. 31, 2015TWD ($) | |
Effect on the equity | $ (1,444,224) |
Non-controlling interests [member] | |
Effect on the equity | (2,637,316) |
Capital surplus [member] | |
Effect on the equity | 1,091,305 |
ThaiLin Semiconductor Corp. [member] | Non-controlling interests [member] | |
Effect on the equity | 2,637,316 |
Consideration paid to non-controlling interests | (2,921,041) |
ThaiLin Semiconductor Corp. [member] | Foreign currency translation reserve [member] | |
Effect on the equity | (17,964) |
ThaiLin Semiconductor Corp. [member] | Capital surplus [member] | |
Effect on the equity | 26,189 |
ThaiLin Semiconductor Corp. [member] | Unappropriated retained earnings [member] | |
Effect on the equity | $ (275,500) |
Capital Reorganization - Additi
Capital Reorganization - Additional Information (Detail) $ / shares in Units, $ in Thousands, $ in Thousands | Oct. 31, 2016TWD ($)$ / sharesshares | Dec. 31, 2016TWD ($)shares | Dec. 31, 2017shares | Oct. 31, 2016USD ($)shares | Oct. 30, 2016TWD ($) | Dec. 31, 2015shares | Dec. 31, 2014shares |
Disclosure of capital reorganization [Line Items] | |||||||
Cash per share the former parent is entitles to receive under the Merger Agreement | $ / shares | $ 3.71 | ||||||
Total consideration paid | $ 3,208,310 | $ 3,208,310 | $ 101,657 | ||||
Directly attributable transaction cost | $ | 133,311 | 133,311 | |||||
Cash for capital reorganization | $ | $ 3,341,621 | 3,341,621 | |||||
Number of shares cancelled | 522,080,000 | ||||||
Reduction of unappropriated retained earnings through capital transfer | $ | $ (5,052,343) | $ (5,052,343) | |||||
Decrease in number of shares | (9,675,000) | ||||||
Equity attributable to predecessors' interests | $ | $ 1,692,918 | ||||||
American depositary share (each representing 20 common shares) [member] | |||||||
Disclosure of capital reorganization [Line Items] | |||||||
Number of units of ADS the former parent is entitled to receive under the Merger Agreement | $ / shares | $ 0.9355 | ||||||
Number of shares represented by each unit of ADS | 20 | ||||||
Number of shares issued | 25,620,267 | 25,620,267 | |||||
Ordinary shares [member] | |||||||
Disclosure of capital reorganization [Line Items] | |||||||
Number of shares represented by each unit of ADS | 20 | ||||||
Number of shares issued | 886,966,000 | 886,297,000 | 896,206,000 | 864,619,000 | |||
Issuance of ordinary shares for capital reorganization | 512,405,000 | 512,405,000 | |||||
Number of shares cancelled | 522,080,000 |
Supplementary Cash Flow Info143
Supplementary Cash Flow Information - Partial Cash Paid for Investing and Financing Activities (Detail) $ in Thousands, $ in Thousands | Oct. 31, 2016TWD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | Dec. 31, 2017USD ($) | Oct. 31, 2016USD ($) |
Statement of cash flows [abstract] | |||||||
Purchase in property, plant and equipment | $ 4,849,331 | $ 163,608 | $ 4,690,995 | $ 3,644,560 | |||
Add: Beginning balance of payable to contractors and equipment suppliers | 839,983 | 28,339 | 523,962 | 1,307,459 | |||
Add: Beginning balance of lease payable | 94,952 | 3,204 | |||||
Less: Ending balance of payable to contractors and equipment suppliers | (878,065) | (29,624) | (647,486) | (523,962) | |||
Less: Ending balance of lease payable | (84,192) | (2,841) | (96,006) | ||||
Less: Transfer from prepaid equipment (shown as "Other non-current assets") | (139,304) | (4,700) | |||||
Cash paid for acquisition of property, plant and equipment | 4,682,705 | 157,986 | 4,471,465 | 4,428,057 | |||
Repurchase of shares | 1,007,654 | 1,862,362 | |||||
Less: Beginning balance of prepayment for the repurchase of shares | (421,003) | ||||||
Cash paid for purchase of treasury stock | 1,007,654 | $ 1,441,359 | |||||
Net assets acquired from ChipMOS Bermuda | 12,987,736 | ||||||
Less: Issuance of shares | (9,779,426) | ||||||
Cash consideration | $ 3,208,310 | 3,208,310 | $ 101,657 | ||||
Directly attributable transaction cost | 133,311 | 133,311 | |||||
Cash paid for capital reorganization | $ 3,341,621 | $ 3,341,621 | |||||
Disposal of a subsidiary | 2,166,151 | 73,082 | |||||
Add: Ending balance of other payables | 64,393 | $ 2,173 | |||||
Less: Cash and cash equivalents of discontinued operations | (449,331) | $ (15,160) | |||||
Cash received from disposal of a subsidiary | $ 1,781,213 | $ 60,095 |
Supplementary Cash Flow Info144
Supplementary Cash Flow Information - Partial Cash Paid for Investing and Financing Activities (Parenthetical) (Detail) - Dec. 31, 2017 $ in Thousands, $ in Thousands | TWD ($) | USD ($) |
Disclosure of supplementary cash flow information [line items] | ||
Ending balance of other payables will be payable in 2018 | $ (64,393) | $ (2,173) |
ChipMOS Shanghai [member] | ||
Disclosure of supplementary cash flow information [line items] | ||
Ending balance of other payables will be payable in 2018 | $ 64,393 | $ 2,173 |
Supplementary Cash Flow Info145
Supplementary Cash Flow Information - Reconciliation of Liabilities Arising from Financing Activities (Detail) - 12 months ended Dec. 31, 2017 $ in Thousands, $ in Thousands | TWD ($) | USD ($) |
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||
Beginning balance | $ 10,751,409 | |
Cash flow | (155,379) | |
Non-Cash flow, Amortization of loans fee | 16,715 | |
Ending balance | 10,612,745 | $ 358,055 |
Long-term loans (include the current portion) [member] | ||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||
Beginning balance | 10,750,005 | |
Cash flow | (1,124,699) | |
Non-Cash flow, Amortization of loans fee | 16,715 | |
Ending balance | 9,642,021 | 325,305 |
Short-term loans [member] | ||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||
Cash flow | 969,353 | |
Ending balance | 969,353 | 32,704 |
Guarantee deposits [member] | ||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||
Beginning balance | 1,404 | |
Cash flow | (33) | |
Ending balance | $ 1,371 | $ 46 |
Supplementary Cash Flow Info146
Supplementary Cash Flow Information - Reconciliation of Liabilities Arising from Financing Activities (Parenthetical) (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||||
Proceeds from long-term bank loans | $ 148,829 | $ 5,021 | $ 10,560,000 | $ 2,000,000 |
Proceeds from short-term bank loans | 5,560,354 | 187,596 | $ 3,820,594 | $ 4,725,030 |
Discontinued operations: ChipMOS Shanghai [member] | ||||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||||
Proceeds from long-term bank loans | 148,829 | 5,021 | ||
Proceeds from short-term bank loans | $ 312,483 | $ 10,543 |
Related Party Transactions - Ad
Related Party Transactions - Additional Information (Detail) ¥ in Thousands, $ in Thousands | 1 Months Ended | 9 Months Ended | 12 Months Ended | |||||||||
Jun. 30, 2017TWD ($) | Jun. 30, 2017USD ($) | Jan. 31, 2017USD ($) | May 31, 2016USD ($) | Oct. 31, 2011CNY (¥)Installments | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | Dec. 31, 2017USD ($) | |
Disclosure of transactions between related parties [Line Items] | ||||||||||||
Disposal of property, plant and equipment | $ 34,233,000 | $ 1,155 | ||||||||||
Acquisition of investment in associate | 1,373,486,000 | 46,339 | $ 116,000,000 | |||||||||
Long-term deferred revenue | $ 24,898,000 | 24,898,000 | $ 840 | |||||||||
Royalty income | $ 11,998,000 | $ 405 | ||||||||||
ChipMOS Shanghai patent licensing agreement [member] | ||||||||||||
Disclosure of transactions between related parties [Line Items] | ||||||||||||
Licensing fee | $ 1,000 | $ 2,500 | ||||||||||
License agreement term | 10 years | 10 years | ||||||||||
Percentage of licensed products revenue | 0.50% | 0.50% | ||||||||||
Receipts in advance | 3,018,000 | $ 3,018,000 | 102 | |||||||||
Long-term deferred revenue | 24,898,000 | 24,898,000 | 840 | |||||||||
Royalty income | 2,828,000 | $ 96 | ||||||||||
ChipMOS Shanghai and bermuda patent licensing agreement [Member] | ||||||||||||
Disclosure of transactions between related parties [Line Items] | ||||||||||||
Licensing fee | ¥ | ¥ 27,400 | |||||||||||
License agreement term | 10 years | |||||||||||
Receipts in advance | $ 1,039,000 | 1,039,000 | $ 35 | |||||||||
Royalty income | $ 9,170,000 | $ 309 | ||||||||||
Number of quarterly installments | Installments | 40 | |||||||||||
Quarterly installment amount | ¥ | ¥ 685 | |||||||||||
ChipMOS Shanghai [member] | ||||||||||||
Disclosure of transactions between related parties [Line Items] | ||||||||||||
Disposal of property, plant and equipment | $ 0 | 0 | ||||||||||
JMC ELECTRONICS CO., LTD. [member] | ||||||||||||
Disclosure of transactions between related parties [Line Items] | ||||||||||||
Disposal of property, plant and equipment | 0 | 0 | ||||||||||
ChipMOS Shanghai [member] | ||||||||||||
Disclosure of transactions between related parties [Line Items] | ||||||||||||
Relationship | Associate | Associate | ||||||||||
ChipMOS Shanghai | $ 41,183,000 | $ 1,389 | 0 | 0 | ||||||||
Acquisition of investment in associate | $ 1,373,486,000 | $ 46,339 | ||||||||||
JMC ELECTRONICS CO., LTD. [member] | ||||||||||||
Disclosure of transactions between related parties [Line Items] | ||||||||||||
Relationship | Associate | Associate | ||||||||||
ChipMOS Shanghai | $ 0 | $ 0 |
Related Party Transactions - Su
Related Party Transactions - Summary of Significant Related Party Transactions (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of transactions between related parties [Line Items] | ||||
Selling price | $ 306,634 | $ 10,345 | $ 59,134 | $ 48,275 |
Gain on disposal | 132,777 | 4,480 | $ 2,575 | $ 1,562 |
ChipMOS Shanghai [member] | ||||
Disclosure of transactions between related parties [Line Items] | ||||
Selling price | 21,982 | 742 | ||
Gain on disposal | $ 20,240 | $ 683 |
Related Party Transactions - Ke
Related Party Transactions - Key Management Personnel Compensation (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of transactions between related parties [abstract] | ||||
Short-term employee benefits | $ 188,105 | $ 6,346 | $ 152,319 | $ 217,091 |
Post-employment compensation | 5,622 | 190 | 3,335 | 2,249 |
Share-based payments | 18,736 | 632 | 109,255 | 100,280 |
Key management personnel compensation | $ 212,463 | $ 7,168 | $ 264,909 | $ 319,620 |
Pledged or Mortgaged Assets - C
Pledged or Mortgaged Assets - Certain Assets Provided as Collateral Mainly for Long-term Bank Loans and Leases (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure assets pledged as collateral [abstract] | |||
Property, plant and equipment, net | $ 7,164,089 | $ 241,703 | $ 8,020,905 |
Other financial assets - non current | 70,241 | 2,370 | 70,677 |
Assets pledged as collateral for liabilities | $ 7,234,330 | $ 244,073 | $ 8,091,582 |
Financial Instruments by Cat151
Financial Instruments by Category - Summary of Financial Instruments by Category (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Financial assets | |||
Available-for-sale financial assets | $ 20,890 | $ 705 | $ 9,960 |
Loans and receivables (including cash and cash equivalents, other financial assets, accounts and notes receivable, other receivables and refundable deposits) | 12,204,292 | 411,751 | 11,862,621 |
Financial assets | 12,225,182 | 412,456 | 11,872,581 |
Financial liabilities | |||
Financial liabilities at amortized cost (including bank loans, accounts payable, payables to contractors and equipment suppliers, lease payable, other payables and guarantee deposits) | $ 14,024,304 | $ 473,155 | $ 13,579,473 |
Financial Risk Management an152
Financial Risk Management and Fair Values of Financial Instruments - Information on Assets and Liabilities Denominated in Foreign Currencies whose Values would be Materially Affected by Exchange Rate Fluctuations (Detail) ¥ in Thousands, ¥ in Thousands, $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($)$ / $$ / JPY$ / CNY | Dec. 31, 2017USD ($)$ / $$ / JPY$ / CNY | Dec. 31, 2017JPY (¥)$ / $$ / JPY$ / CNY | Dec. 31, 2017CNY (¥)$ / $$ / JPY$ / CNY | Dec. 29, 2017$ / $ | Dec. 31, 2016TWD ($)$ / $$ / JPY | Dec. 31, 2016USD ($)$ / $$ / JPY | Dec. 31, 2016JPY (¥)$ / $$ / JPY |
Disclosure of detailed information about financial instruments [Line Items] | ||||||||
Exchange rate | 29.64 | |||||||
Assets denominated in foreign currencies | $ 12,225,182 | $ 412,456 | $ 11,872,581 | |||||
Currency Risk [member] | US$ [member] | ||||||||
Disclosure of detailed information about financial instruments [Line Items] | ||||||||
Exchange rate | 29.7600 | 29.7600 | 29.7600 | 29.7600 | 32.2500 | 32.2500 | 32.2500 | |
Assets denominated in foreign currencies | $ 6,192,044 | $ 208,066 | $ 5,746,982 | $ 178,201 | ||||
Liabilities denominated in foreign currencies | $ 477,231 | $ 16,036 | $ 251,615 | $ 7,802 | ||||
Currency Risk [member] | JPY [member] | ||||||||
Disclosure of detailed information about financial instruments [Line Items] | ||||||||
Exchange rate | $ / JPY | 0.2642 | 0.2642 | 0.2642 | 0.2642 | 0.2756 | 0.2756 | 0.2756 | |
Assets denominated in foreign currencies | $ 210,899 | ¥ 798,254 | $ 142,517 | ¥ 517,114 | ||||
Liabilities denominated in foreign currencies | $ 283,072 | ¥ 1,071,432 | $ 151,706 | ¥ 550,456 | ||||
Currency Risk [member] | RMB [member] | ||||||||
Disclosure of detailed information about financial instruments [Line Items] | ||||||||
Exchange rate | $ / CNY | 4.5650 | 4.5650 | 4.5650 | 4.5650 | ||||
Assets denominated in foreign currencies | $ 764,564 | ¥ 167,484 |
Financial Risk Management an153
Financial Risk Management and Fair Values of Financial Instruments - Additional Information (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | Dec. 31, 2017USD ($) | |
Disclosure of detailed information about financial instruments [Line Items] | |||||
Realized and unrealized gain and loss arising from significant foreign exchange variation | $ (418,970) | $ (14,135) | $ (195,326) | $ 241,983 | |
General increase or decrease of 100 basis points (1%) in interest rates [member] | |||||
Disclosure of detailed information about financial instruments [Line Items] | |||||
Estimated decrease or increase in the Group's profit and equity based on an increase or decrease in the interest rates | $ 106,447 | $ 108,000 | $ 3,591 |
Financial Risk Management an154
Financial Risk Management and Fair Values of Financial Instruments - Details of Exposure to Currency Risk Arising from Recognized Monetary Assets or Liabilities Denominated in a Currency Other Than Functional Currency (Detail) - Currency Risk [member] - TWD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 |
Financial assets, class [member] | US$ [member] | ||
Disclosure of nature and extent of risks arising from financial instruments [Line Items] | ||
Change in exchange rate | 5.00% | 5.00% |
Financial assets, class [member] | JPY [member] | ||
Disclosure of nature and extent of risks arising from financial instruments [Line Items] | ||
Change in exchange rate | 5.00% | 5.00% |
Financial assets, class [member] | RMB [member] | ||
Disclosure of nature and extent of risks arising from financial instruments [Line Items] | ||
Change in exchange rate | 5.00% | |
Financial liabilities, class [member] | US$ [member] | ||
Disclosure of nature and extent of risks arising from financial instruments [Line Items] | ||
Change in exchange rate | 5.00% | 5.00% |
Financial liabilities, class [member] | JPY [member] | ||
Disclosure of nature and extent of risks arising from financial instruments [Line Items] | ||
Change in exchange rate | 5.00% | 5.00% |
Profit and Loss [member] | Financial assets, class [member] | US$ [member] | ||
Disclosure of nature and extent of risks arising from financial instruments [Line Items] | ||
Effect of change in exchange rate | $ 309,602 | $ 287,349 |
Profit and Loss [member] | Financial assets, class [member] | JPY [member] | ||
Disclosure of nature and extent of risks arising from financial instruments [Line Items] | ||
Effect of change in exchange rate | 10,545 | 7,126 |
Profit and Loss [member] | Financial assets, class [member] | RMB [member] | ||
Disclosure of nature and extent of risks arising from financial instruments [Line Items] | ||
Effect of change in exchange rate | 38,228 | |
Profit and Loss [member] | Financial liabilities, class [member] | US$ [member] | ||
Disclosure of nature and extent of risks arising from financial instruments [Line Items] | ||
Effect of change in exchange rate | 23,862 | 12,581 |
Profit and Loss [member] | Financial liabilities, class [member] | JPY [member] | ||
Disclosure of nature and extent of risks arising from financial instruments [Line Items] | ||
Effect of change in exchange rate | $ 14,154 | $ 7,585 |
Financial Risk Management an155
Financial Risk Management and Fair Values of Financial Instruments - Maturity Profile of Non-derivative Financial Liabilities Based on Contracted Undiscounted Payments (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | |||
Short-term bank loans | $ 971,813 | $ 32,787 | |
Long-term bank loans (including current portion) | 10,061,726 | 339,465 | $ 11,382,555 |
Accounts payable and payables to contractors and equipment suppliers (including related parties) | 1,401,499 | 47,284 | 1,375,408 |
Other payables (including related parties) | 1,980,218 | 66,809 | 1,412,054 |
Lease payable | 30,532 | 1,030 | 42,000 |
Guarantee deposits | 1,371 | 46 | 1,404 |
Total | 14,447,159 | $ 487,421 | 14,213,421 |
Within 1 year [member] | |||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | |||
Short-term bank loans | 971,813 | ||
Long-term bank loans (including current portion) | 2,321,459 | 1,272,266 | |
Accounts payable and payables to contractors and equipment suppliers (including related parties) | 1,401,499 | 1,375,408 | |
Other payables (including related parties) | 1,980,218 | 1,412,054 | |
Lease payable | 12,266 | 12,000 | |
Total | 6,687,255 | 4,071,728 | |
2-5 years [member] | |||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | |||
Long-term bank loans (including current portion) | 7,740,267 | 10,110,289 | |
Lease payable | 18,266 | 30,000 | |
Total | 7,758,533 | 10,140,289 | |
More Than 5 Years [member] | |||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | |||
Guarantee deposits | 1,371 | 1,404 | |
Total | $ 1,371 | $ 1,404 |
Share-based payments - Addition
Share-based payments - Additional Information (Detail) $ / shares in Units, $ in Thousands | May 10, 2016 | Jul. 21, 2015 | Nov. 12, 2014$ / sharesshares | Dec. 31, 2017TWD ($)$ / sharesshares | Dec. 31, 2017USD ($)shares | Dec. 31, 2016TWD ($) | Dec. 31, 2016USD ($) | Dec. 31, 2015TWD ($)shares | Oct. 30, 2016shares |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |||||||||
Weighted average share price at the date of exercise | $ | $ 18.10 | ||||||||
Stock option outstanding | 0 | 0 | 1,062,250 | 0 | |||||
Par value | $ / shares | $ 10 | ||||||||
Compensation expenses | $ 123,021 | $ 4,151,000 | $ 356,463 | $ 207,242 | |||||
Option Plan Two Thousand One [member] | |||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |||||||||
Shares available for issuance | 2,250,000 | ||||||||
Option Plan Two Thousand Six [member] | |||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |||||||||
Shares available for issuance | 1,750,000 | ||||||||
Option Plan Two Thousand Eleven [member] | |||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |||||||||
Shares available for issuance | 1,000,000 | ||||||||
Share Appreciation Rights Plan in 2006 [member] | |||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |||||||||
Shares available for issuance | 500,000 | 500,000 | |||||||
Share Appreciation Rights Plan in 2008 [member] | |||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |||||||||
Shares available for issuance | 750,000 | 750,000 | |||||||
Share Appreciation Rights Plan in 2013 [member] | |||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |||||||||
Shares available for issuance | 1,000,000 | 1,000,000 | |||||||
Stock Appreciation Rights [member] | |||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |||||||||
Weighted average share price at the date of exercise | $ | $ 19.18 | ||||||||
Weighted average fair value of SARs granted | $ | $ 1.34 | ||||||||
Outstanding appreciation rights | 0 | 588,596 | 0 | ||||||
Restricted Shares [member] | |||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |||||||||
Shares available for issuance | 17,300,000 | ||||||||
Par value | $ / shares | $ 10 | ||||||||
Granting price | $ / shares | $ 0 | ||||||||
Number of shares issued | 1,548,000 | 15,752,000 |
Share-based Payments - Number a
Share-based Payments - Number and Weighted Average Exercise Prices of and Movements in Share Options (Detail) | 10 Months Ended |
Oct. 30, 2016USD ($)shares | |
Disclosure of terms and conditions of share-based payment arrangement [abstract] | |
Outstanding at the beginning of the period | shares | 1,062,250 |
Forfeited | shares | (25,084) |
Exercised | shares | (97,715) |
Expired | shares | (49,500) |
Early settled | shares | (889,951) |
Outstanding at the end of the period | shares | 0 |
Exercisable at the end of the period | shares | 0 |
Outstanding at the beginning of the period | $ | $ 13.57 |
Forfeited | $ | 15.35 |
Exercised | $ | 7.21 |
Expired | $ | 20.57 |
Early settled | $ | 13.83 |
Outstanding at the end of the period | $ | 0 |
Exercisable at the end of the period | $ | $ 0 |
Share-based Payments - Numbe158
Share-based Payments - Number and Weighted Average Exercise Prices of and Movements in Share Appreciation Rights (Detail) - Stock Appreciation Rights [member] | 10 Months Ended |
Oct. 30, 2016USD ($)shares | |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |
Outstanding at the beginning of the period | shares | 588,596 |
Granted | shares | 37,500 |
Forfeited | shares | (9,785) |
Exercised | shares | (123,033) |
Early settled | shares | (493,278) |
Outstanding at the end of the period | shares | 0 |
Exercisable at the end of the period | shares | 0 |
Outstanding at the beginning of the period | $ | $ 14.07 |
Granted | $ | 19.55 |
Forfeited | $ | 15.16 |
Exercised | $ | 11.26 |
Early settled | $ | 15.17 |
Outstanding at the end of the period | $ | |
Exercisable at the end of the period | $ | $ 0 |
Share-based Payments - Years of
Share-based Payments - Years of Service and Performance Conditions of Restricted Shares (Detail) | 12 Months Ended |
Dec. 31, 2017 | |
Within 1 year [member] | |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |
Years of service following the receipt of restricted shares | Continuous service for one year |
Grade of performance appraisal | >=B+ |
Compliance of terms agreed by the staff and the Company | No violation |
Vesting ratio of numbers of restricted shares received | 30.00% |
1-2 years [member] | |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |
Years of service following the receipt of restricted shares | Continuous service for two years |
Grade of performance appraisal | >=B+ |
Compliance of terms agreed by the staff and the Company | No violation |
Vesting ratio of numbers of restricted shares received | 30.00% |
2019 [member] | |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |
Years of service following the receipt of restricted shares | Continuous service for three years |
Grade of performance appraisal | >=B+ |
Compliance of terms agreed by the staff and the Company | No violation |
Vesting ratio of numbers of restricted shares received | 40.00% |
Capital Management - Percentage
Capital Management - Percentages of Liabilities to Assets Ratio Used for Monitoring Capital (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of objectives, policies and processes for managing capital [abstract] | |||
Total liabilities | $ 15,138,993 | $ 510,762 | $ 15,048,258 |
Total assets | $ 33,259,942 | $ 1,122,130 | $ 31,295,960 |
Liabilities to assets ratio | 45.52% | 45.52% | 48.08% |
Event After the Reporting Pe161
Event After the Reporting Periods - Additional Information (Detail) $ / shares in Units, $ in Thousands, $ in Thousands | Mar. 15, 2018$ / shares | Jan. 01, 2018 | Jan. 31, 2018TWD ($) | Jan. 31, 2018USD ($) | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 |
Disclosure of non-adjusting events after reporting period [Line Items] | |||||||
Income tax rate | 17.00% | 17.00% | 17.00% | ||||
Tax rate on unappropriated retained earnings | 10.00% | ||||||
Changes in tax rates or tax laws enacted or announced [member] | |||||||
Disclosure of non-adjusting events after reporting period [Line Items] | |||||||
Income tax rate | 20.00% | ||||||
Tax rate on unappropriated retained earnings | 5.00% | ||||||
Major ordinary share transactions [member] | ChipMOS BVI [member] | ChipMOS Shanghai [member] | |||||||
Disclosure of non-adjusting events after reporting period [Line Items] | |||||||
Increase of paid-in capital in acquisition of investment in associate | $ 794,694 | $ 26,812 | |||||
Potential ordinary share transactions [member] | |||||||
Disclosure of non-adjusting events after reporting period [Line Items] | |||||||
Reduce and return capital | $ 1.5 |
Financial Statements Schedul162
Financial Statements Schedule: Valuation and Qualifying Accounts (Detail) - TWD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Allowance for Impairment of property, plant and equipment [member] | |||
Disclosure of details of valuation and qualifying accounts [Line Items] | |||
January 1 | $ 359,270 | $ 1,994,715 | $ 2,110,362 |
Additions charged to expense | 956 | 8,198 | 1,478 |
Deduction/Write-offs | (39,771) | (45,319) | (85,351) |
Exchange difference on translations of foreign financial statement | (118,046) | (31,774) | |
Non-current assets held for sale | (1,480,278) | ||
December 31 | 320,455 | 359,270 | 1,994,715 |
Allowance for Impairment of Obsolescence and Decline in Market Value of Inventories [Member] | |||
Disclosure of details of valuation and qualifying accounts [Line Items] | |||
January 1 | 154,841 | 95,036 | 82,582 |
Additions charged to expense | 66,894 | 12,717 | |
Deduction/Write-offs | (101,127) | (151) | |
Exchange difference on translations of foreign financial statement | (557) | (112) | |
Non-current assets held for sale | (6,532) | ||
December 31 | $ 53,714 | $ 154,841 | $ 95,036 |