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12. SEGMENTED, SIGNIFICANT CUSTOMER INFORMATION AND ECONOMIC DEPENDENCY (Details 2) (USD $) | Mar. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Property and equipment, and patents | $ 5,644,591 | $ 5,999,991
Canada [Member] |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Property and equipment, and patents | 3,949,829 | 4,258,075
United States [Member] |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Property and equipment, and patents | $ 1,694,762 | $ 1,741,916

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- Definition Custom Element. + 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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- Details
Name: | us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration