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5. PROPERTY, PLANT & EQUIPMENT (Details Narrative) - USD ($)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Property Plant Equipment Details Narrative
Depreciation expense	$ 393,630	$ 418,274

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- Definition

Custom Element.

+ References

No definition available.

+ Details

Name:	FSI_DepreciationExpense1
Namespace Prefix:	FSI_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

+ Details

Name:	FSI_PropertyPlantEquipmentDetailsNarrativeAbstract
Namespace Prefix:	FSI_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration