XML 29 R12.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Patents | 12 Months Ended
--- | ---
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Patents | 6. Patents
|  | 2017 Cost |  |  | Accumulated Amortization |  |  | 2017 Net |
Patents |  | $ | 212,426 |  |  | $ | 132,974 |  |  | $ | 79,452 |
|  | 2016 Cost |  |  | Accumulated Amortization |  |  | 2016 Net |
Patents |  | $ | 197,448 |  |  | $ | 101,558 |  |  | $ | 95,890 |
Increase in 2017 cost was due to currency conversion. 2017 cost in Canadian dollars - $265,102 (2016 - $265,102 in Canadian dollars). Amount of amortization for 2017: $16,438 (2016: $15,616) and is included in cost of sales in the consolidated statements of income and comprehensive income (loss). Estimated amortization expense over the next five years is as follows:
2018 |  | $ | 16,438 |
2019 |  |  | 16,438 |
2020 |  |  | 16,438 |
2021 |  |  | 16,438 |
2022 |  |  | 16,438 |

X
- References No definition available. + Details
Name: | us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
Name: | us-gaap_IntangibleAssetsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration