Finnveden and Radar Pro Forma Results (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Jan. 31, 2015	Jan. 31, 2014
Business Acquisition [Line Items]
Revenue	$ 257,078	$ 275,476
Net income	3,673	6,190
Basic earnings per share	$ 0.21us-gaap_BasicEarningsPerShareProForma	$ 0.36us-gaap_BasicEarningsPerShareProForma
Diluted earnings per share	$ 0.21us-gaap_DilutedEarningsPerShareProForma	$ 0.36us-gaap_DilutedEarningsPerShareProForma
Finnveden and Radar [Member]
Business Acquisition [Line Items]
Amortization of Intangible Assets	$ 141

Business Combination, Pro Forma Information, Amortization of Intangible Assets

No definition available.

Name:	shlo_BusinessCombinationProFormaInformationAmortizationOfIntangibleAssets
Namespace Prefix:	shlo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Pro forma basic earnings per share or earnings per unit, which is commonly presented in initial public offerings based on the terms of the offering.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph b

-Subparagraph 7

-Article 11

+ Details

Name:	us-gaap_BasicEarningsPerShareProForma
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

+ Details

Name:	us-gaap_BusinessAcquisitionsProFormaRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Pro forma diluted earnings per share, which is commonly presented in initial public offerings.

+ References

+ Details

Name:	us-gaap_DilutedEarningsPerShareProForma
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_BusinessAcquisitionAxis=shlo_FinnvedenandRadarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: