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Intangible assets | 12 Months Ended
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Dec. 31, 2018
Intangible Assets [Abstract] |
Intangible assets | Intangible assets:
| December 31, 2018 |  |  | December 31, 2017 |
Intellectual property acquired from UTC | $ | 1,417 |  |  | $ | 1,864 |
Intellectual property acquired from H2 Logic A/S | 43 |  |  | 129 |
Intellectual property acquired from Protonex | 787 |  |  | 8,507 |
Internally generated fuel cell intangible assets | 1,199 |  |  | 1,690 |
ERP management reporting software system | 4,825 |  |  | 5,738 |
Intellectual property acquired by Ballard Power Systems Europe | 14 |  |  | 22 |
| $ | 8,285 |  |  | $ | 17,950 |
10. | Intangible assets (cont'd):
Intangible assets |  |  | Accumulated |  |  | Net carrying |
Balance | Cost |  |  | amortization |  |  | amount |
At January 1, 2017 | $ | 66,171 |  |  | $ | 48,088 |  |  | $ | 18,083 |
Additions to and acquisition of intangible assets | 3,376 |  |  | — |  |  | 3,376 |
Amortization expense | — |  |  | 2,309 |  |  | (2,309 | )
Impairment charges (note 28) | — |  |  | 1,200 |  |  | (1,200 | )
At December 31, 2017 | 69,547 |  |  | 51,597 |  |  | 17,950 |
Amortization expense | — |  |  | 2,354 |  |  | (2,354 | )
Disposals | (9,138 | ) |  | (1,827 | ) |  | (7,311 | )
At December 31, 2018 | $ | 60,409 |  |  | $ | 52,124 |  |  | $ | 8,285 |
Amortization expense on intangible assets is allocated to research and product development expense or general and administration expense depending upon the nature of the underlying assets. In 2018, amortization of $2,354,000 (2017 - $2,309,000) was recorded. During the year ended December 31, 2018, the Corporation disposed of intangible assets of $7,311,000 related to Protonex' Power Manager business (note 27). During the year ended December 31, 2017, the Corporation recorded an impairment loss on intellectual property of $1,200,000 related to the write-off of certain Protonex Solid Oxide Fuel Cell assets to their estimated net realizable value of $nil (note 28).

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- Definition The entire disclosure for intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2017-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2017-03-01&anchor=sect_Disclosure&doctype=Standard -URIDate 2017-03-09 + Details
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