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Goodwill and intangible assets | 12 Months Ended
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Dec. 31, 2018
Intangible Assets And Goodwill [Abstract] |
Goodwill and intangible assets | 9. Goodwill and intangible assets A. Reconciliation of carrying amount
At December 31, 2018 |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Intellectual |  |  |  |
|  | Goodwill |  | Contracts |  | property |  | Patents |  | Total
Cost |  |  |  |  |  |  |  |  |  |
Beginning of year | $ | 111,399 | $ | 109,812 | $ | 118,819 | $ | 10,966 | $ | 350,996
Effect of movements in exchange rates |  | - |  | 9,559 |  | - |  | - |  | 9,559
End of year |  | 111,399 |  | 119,371 |  | 118,819 |  | 10,966 |  | 360,555
Accumulated amortization and impairment |  |  |  |  |  |  |  |  |  |
Beginning of year |  | 111,399 |  | 104,939 |  | 53,680 |  | 10,966 |  | 280,984
Amortization charge |  | - |  | 1,325 |  | 3,474 |  | - |  | 4,799
Effect of movements in exchange rates |  | - |  | 9,170 |  | - |  | - |  | 9,170
End of year |  | 111,399 |  | 115,434 |  | 57,154 |  | 10,966 |  | 294,953
Net book value at December 31, 2018 | $ | - | $ | 3,937 | $ | 61,665 | $ | - | $ | 65,602
At December 31, 2017 |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Intellectual |  |  |  |
|  | Goodwill |  | Contracts |  | property |  | Patents |  | Total
Cost |  |  |  |  |  |  |  |  |  |
Beginning of year | $ | 118,664 | $ | 117,533 | $ | 118,819 | $ | 11,737 | $ | 366,753
Effect of movements in exchange rates |  | (7,265) |  | (7,721) |  | - |  | (771) |  | (15,757)
End of year |  | 111,399 |  | 109,812 |  | 118,819 |  | 10,966 |  | 350,996
Accumulated amortization and impairment |  |  |  |  |  |  |  |  |  |
Beginning of year |  | - |  | 110,284 |  | 49,589 |  | 3,570 |  | 163,443
Amortization charge |  | - |  | 2,002 |  | 4,091 |  | 630 |  | 6,723
Impairment charge |  | 111,399 |  | - |  | - |  | 7,150 |  | 118,549
Effect of movements in exchange rates |  | - |  | (7,347) |  | - |  | (384) |  | (7,731)
End of year |  | 111,399 |  | 104,939 |  | 53,680 |  | 10,966 |  | 280,984
Net book value at December 31, 2017 | $ | - | $ | 4,873 | $ | 65,139 | $ | - | $ | 70,012
B. Amortization The intangible asset values relate to intellectual property acquired with Cameco Fuel Manufacturing Inc. (CFM) and purchase and sales contracts acquired with NUKEM. The CFM intellectual property is being amortized on a unit-of-production basis over its remaining life. Amortization is allocated to the cost of inventory and is recognized in cost of products and services sold as inventory is sold. The NUKEM purchase and sales contracts will be amortized to earnings over the remaining terms of the underlying contracts, which extend to 2022. Amortization of the purchase contracts is allocated to the cost of inventory and is included in cost of products and services sold as inventory is sold. Sa les contracts are amortized to revenue. P atents acquired with UFP Investments LLC (UFP) were being amortized to cost of products and services sold on a straight-line basis over their remaining life which expires in July 2029. In the fourth quarter of 2017, Cameco recorded an impairment charge of $7,150,000 on these assets due to continuing weakness in the uranium market and limited budget allocated to this project. C. Impairment test For the purpose of impairment testing, goodwill is attributable to NUKEM, which is considered to be a CGU. In the third quarter of 2017, Cameco restructured its global marketing organization in response to the changing business environment. The res tructuring significantly impacted the marketing activities historically performed by NUKEM. In accordance with the provisions of IAS 36, Impairment of Assets, Cameco considered this to be an indicator that the as sets of the CGU could po tentially be impaired and accordingly, we were required to estimate the recoverable amount of these assets. The recoverable amount of NUKEM was estimated based on a fair value less costs to sell calculation and was concluded to be equal to the carrying val ue of its inventory and existing contracts. A change in the previous assumption, that there would be cash flows generated beyond a five-year period, resulted in the elimination of the terminal value. Accordingly, an impairment charge of $111,399,000 ($88,3 77,000 (US)) was recorded, representing the full carrying value of NUKEM goodwill.

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- Definition The disclosure of intangible assets and goodwill. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_10_e&doctype=Standard -URIDate 2018-03-16 + Details
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