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Intangible Assets - Gross Balance (Details) $ in Thousands, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) | Dec. 31, 2017 CLP ($) | Dec. 31, 2016 CLP ($) | Dec. 31, 2015 CLP ($)
Changes in intangible assets |  |  |  |
Intangible assets and goodwill at beginning of period |  | $ 65,036 | $ 64,700 |
Impairment loss (*) |  |  |  | $ (59)
Intangible assets and goodwill at end of period | $ 117,731 | 72,455 | 65,036 | 64,700
Goodwill generated in the business combination |  | 16,714 | 16,714 |
Citibank Chile |  |  |  |
Changes in intangible assets |  |  |  |
Goodwill generated in the business combination |  | 12,576 |  |
Gross Balance |  |  |  |
Changes in intangible assets |  |  |  |
Intangible assets and goodwill at beginning of period |  | 199,977 | 190,486 | 182,711
Acquisitions |  | 18,779 | 11,248 | 8,519
Disposals |  | (5,790) | (1,757) | (685)
Impairment loss (*) |  |  |  | (59)
Intangible assets and goodwill at end of period |  | 212,966 | 199,977 | 190,486
Goodwill |  |  |  |
Changes in intangible assets |  |  |  |
Intangible assets and goodwill at beginning of period |  | 16,714 | 16,714 |
Intangible assets and goodwill at end of period |  | 16,714 | 16,714 | 16,714
Goodwill | Gross Balance |  |  |  |
Changes in intangible assets |  |  |  |
Intangible assets and goodwill at beginning of period |  | 16,714 | 16,714 | 16,714
Intangible assets and goodwill at end of period |  | 16,714 | 16,714 | 16,714
Intangible assets arising from business combinations |  |  |  |
Changes in intangible assets |  |  |  |
Intangible assets and goodwill at beginning of period |  | 18,981 | 21,267 |
Intangible assets and goodwill at end of period |  | 16,696 | 18,981 | 21,267
Intangible assets arising from business combinations | Gross Balance |  |  |  |
Changes in intangible assets |  |  |  |
Intangible assets and goodwill at beginning of period |  | 56,249 | 56,249 | 56,249
Intangible assets and goodwill at end of period |  | 56,249 | 56,249 | 56,249
Software or computer programs |  |  |  |
Changes in intangible assets |  |  |  |
Intangible assets and goodwill at beginning of period |  | 29,341 | 26,719 |
Intangible assets and goodwill at end of period |  | 39,045 | 29,341 | 26,719
Software or computer programs | Gross Balance |  |  |  |
Changes in intangible assets |  |  |  |
Intangible assets and goodwill at beginning of period |  | 127,014 | 117,523 | 109,748
Acquisitions |  | 18,779 | 11,248 | 8,519
Disposals |  | (5,790) | (1,757) | (685)
Impairment loss (*) |  |  |  | (59)
Intangible assets and goodwill at end of period |  | $ 140,003 | $ 127,014 | $ 117,523

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