XML 94 R35.htm IDEA: XBRL DOCUMENT
v3.20.1

Patents (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Patents |
|  | 2019 Cost |  |  | Accumulated Amortization |  |  | 2019 Net |
Patents |  | $ | 204,102 |  |  | $ | 157,526 |  |  | $ | 46,576 |
|  | 2018 Cost |  |  | Accumulated Amortization |  |  | 2018 Net |
Patents |  | $ | 194,320 |  |  | $ | 131,306 |  |  | $ | 63,014 |
Schedule of Estimated Amortization Expense | Estimated amortization expense over the next five years is as follows:
2020 |  | $ | 16,438 |
2021 |  |  | 16,438 |
2022 |  |  | 13,700 |

X
- Definition Schedule of Patents [Table Text Block] + References No definition available. + Details
Name: | FSI_ScheduleOfPatentsTableTextBlock
Namespace Prefix: | FSI_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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 Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
Name: | us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration