Stock-Based Compensation (Details Textual) (USD $)	3 Months Ended	9 Months Ended
Mar. 31, 2012	Sep. 30, 2012
Investment Options, Exercise Price (in dollars per share)	$ 6.64
Percentage of After Two Years Grants	50.00%
Percentage of After Three Years Grants	50.00%
Share-based Compensation Arrangement by Share-based Payment Award Estimated Fair Value of Stock Price (in dollars per share)		$ 6.02
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term		9 years 6 months
Option Plan 1998 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Terminated in Period, Gross		7,125
Share-based Compensation Shares Authorized Under Stock Option Plans Expire Period		10 years
Equity Plan 2006 [Member]
Share-based Compensations Arrangements Share-based Payment Award Number of Additional Shares Authorized	54,216

Exercise price of the option.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Footnote 5

+ Details

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Namespace Prefix:	invest_
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- Definition

The percentage of options that vest after three years from date of grant.

+ References

No definition available.

+ Details

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Namespace Prefix:	shbi_
Data Type:	num:percentItemType
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Period Type:	duration

- Definition

The percentage of options that vest after two years from date of grant.

+ References

No definition available.

+ Details

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award,estimated fair value of stock price.

+ References

No definition available.

+ Details

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Namespace Prefix:	shbi_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Gross number of share options (or share units) terminated during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	shbi_
Data Type:	xbrli:sharesItemType
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- Definition

The number of additional shares authorized based on share based compensation arrangement by share based payment award.

+ References

No definition available.

+ Details

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Namespace Prefix:	shbi_
Data Type:	xbrli:sharesItemType
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- Definition

The period of time to exercise share-based compensation shares authorized under stock option plans.

+ References

No definition available.

+ Details

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Namespace Prefix:	shbi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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