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10. LONG TERM DEBT (Details Narrative) - USD ($) | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Harris [Member] |  |
Debt Instrument [Line Items] |  |
Borrowing balance | $ 553,282 | $ 754,475

X
- Definition Custom Element. + References No definition available. + Details
Name: | FSI_BorrowingBalance
Namespace Prefix: | FSI_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=FSI_HarrisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |