XML 47 R74.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Commitments and Contingencies - Insurance Receivable Balance Sheet Rollforward (Details) - Insurance recoveries $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2019 USD ($)
Loss Contingencies [Line Items] |
Other receivable, beginning balance | $ 0
Cash received | (8,486)
Other expenses | 2,463
Business interruption | 1,168
Other receivable, ending balance | 3,500
Equipment |
Loss Contingencies [Line Items] |
Capital expenditures (equipment) | $ 8,355

X
- Definition Business Interruption Losses, Offset By Proceeds + References No definition available. + Details
Name: | sif_BusinessInterruptionLossesOffsetByProceeds
Namespace Prefix: | sif_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Insurance Recoveries, Used For Property Damage Incurred + References No definition available. + Details
Name: | sif_InsuranceRecoveriesUsedForPropertyDamageIncurred
Namespace Prefix: | sif_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Payment For Business Interruption Insurance + References No definition available. + Details
Name: | sif_PaymentForBusinessInterruptionInsurance
Namespace Prefix: | sif_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
Name: | us-gaap_InsuranceRecoveries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_InsuranceSettlementsReceivableCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessInterruptionLossAxis=sif_QualityAluminumForgeLLCManufacturingFacilityFireMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |