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Commitments and Contingencies (Details Textual) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Sep. 30, 2012 | Sep. 30, 2011
Commitments and Contingencies (Textual) [Abstract] |  |
Rent Expense | $ 1,058 | $ 564

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- Details
Name: | sif_CommitmentsAndContingenciesTextualAbstract
Namespace Prefix: | sif_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration