XML 32 R48.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Commitments and Contingencies (Details) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 USD ($) press_ton restored_building | Sep. 30, 2019 USD ($) | Dec. 26, 2018 additional_press
Loss Contingencies [Line Items] |  |  |
Number of press tons | press_ton | 2,500 |  |
Quality Aluminum Forge, LLC Manufacturing Facility Fire |  |  |
Loss Contingencies [Line Items] |  |  |
Number of recovered presses on site | restored_building | 1 |  |
Cash proceeds | $ 4,500 |  |
Class Action Suit in Superior Court of California, Orange County - Wage-and-hour law violations |  |  |
Loss Contingencies [Line Items] |  |  |
Estimated loss on class action lawsuit | $ 65 | $ 250 |
Damage from Fire, Explosion or Other Hazard | Quality Aluminum Forge, LLC Manufacturing Facility Fire |  |  |
Loss Contingencies [Line Items] |  |  |
Number of additional damaged presses on site | additional_press |  |  | 2

X
- Definition Number Of Additional Presses On Site, Damaged + References No definition available. + Details
Name: | sif_NumberOfAdditionalPressesOnSiteDamaged
Namespace Prefix: | sif_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Press Tons + References No definition available. + Details
Name: | sif_NumberOfPressTons
Namespace Prefix: | sif_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Presses On Site, Recovered + References No definition available. + Details
Name: | sif_NumberOfPressesOnSiteRecovered
Namespace Prefix: | sif_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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 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
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14557-108349 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118943654&loc=d3e12021-110248 + Details
Name: | us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | srt_LitigationCaseAxis=sif_ClassActionSuitinSuperiorCourtofCaliforniaOrangeCountyViolationofWageandhourLawsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_DamageFromFireExplosionOrOtherHazardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |