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Equity Method Investment - Schedule of Equity Method Investment (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Equity Method Investments and Joint Ventures [Abstract] |  |
Balance, Beginning | $ 122,480 |
Capital contributions |  | 150,066
Return of equity | (25,000) | (12,500)
Loss on equity method investment | (84,066) | (15,086)
Balance, Ending | $ 13,414 | $ 122,480

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- Definition Equity method investment. + References No definition available. + Details
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Namespace Prefix: | FSI_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Return of equity. + References No definition available. + Details
Name: | FSI_EquityMethodInvestmentReturnOfEquity
Namespace Prefix: | FSI_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of gain (loss) on sale or disposal of an equity method investment. + References No definition available. + Details
Name: | us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 21D -URI http://asc.fasb.org/extlink&oid=98514028&loc=SL94080555-108585 + Details
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