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Fair Value Measurements (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Impaired loans:
Beginning balance	$ 86,626	$ 75,112
Charge-offs	(2,649)	(6,048)
Payments	(1,589)	(2,860)
Transfers to other real estate owned	(2,221)	(3,518)
Returned to performing status	(24)	0
Changed to nonaccrual status	(177)	(786)
Additions	2,191	16,049
Changes in allowance	742	(224)
Ending balance	82,899	77,725
Construction [Member]
Impaired loans:
Beginning balance	36,088	27,166
Charge-offs	(707)	(1,072)
Payments	(563)	(675)
Transfers to other real estate owned	(205)	(1,600)
Returned to performing status	0	0
Changed to nonaccrual status	0	0
Additions	125	648
Changes in allowance	380	38
Ending balance	35,118	24,505
Residential Real Estate [Member]
Impaired loans:
Beginning balance	17,951	22,602
Charge-offs	(786)	(4,092)
Payments	(199)	(834)
Transfers to other real estate owned	(415)	(676)
Returned to performing status	(24)	0
Changed to nonaccrual status	(177)	(786)
Additions	1,992	7,200
Changes in allowance	335	418
Ending balance	18,677	23,832
Commercial Real Estate [Member]
Impaired loans:
Beginning balance	31,833	23,578
Charge-offs	(1,075)	(690)
Payments	(817)	(1,326)
Transfers to other real estate owned	(1,601)	(1,212)
Returned to performing status	0	0
Changed to nonaccrual status	0	0
Additions	23	7,057
Changes in allowance	23	(193)
Ending balance	28,386	27,214
Commercial [Member]
Impaired loans:
Beginning balance	715	1,738
Charge-offs	(47)	(194)
Payments	(6)	(25)
Transfers to other real estate owned	0	(30)
Returned to performing status	0	0
Changed to nonaccrual status	0	0
Additions	40	1,114
Changes in allowance	(40)	(487)
Ending balance	662	2,116
Consumer [Member]
Impaired loans:
Beginning balance	39	28
Charge-offs	(34)	0
Payments	(4)	0
Transfers to other real estate owned	0	0
Returned to performing status	0	0
Changed to nonaccrual status	0	0
Additions	11	30
Changes in allowance	44	0
Ending balance	$ 56	$ 58

X

- Definition

This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is non required for reconciliation purposes of beginning balances.

+ References

No definition available.

+ Details

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Namespace Prefix:	shbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The Fair Value, Measurement with Unobservable Inputs Reconciliation, Non Recurring Basis, Asset Changed to Nonaccrual Status level 3 during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	shbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Writing off impaired financing receivables (Level 3) deemed uncollectible.

+ References

No definition available.

+ Details

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Namespace Prefix:	shbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The Fair Value, Measurement with Unobservable Inputs Reconciliation, Non recurring Basis, changes in allowance for Asset (Level 3).

+ References

No definition available.

+ Details

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Namespace Prefix:	shbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is non required for reconciliation purposes of ending balances.

+ References

No definition available.

+ Details

Name:	shbi_FairValueMeasurementWithUnobservableInputsReconciliationNonRecurringBasisAssetEndingValue
Namespace Prefix:	shbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Settlements that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

+ References

No definition available.

+ Details

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Namespace Prefix:	shbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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X

- Definition

The increase (decrease) of assets measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period. Such increase (decrease) may be comprised of changes in fair value (gains or losses) whether realized or unrealized that have been included in earnings, changed net asset value, or other comprehensive income (a separate component of shareholders' equity); purchases, sales, issuances, or settlements of assets; and net transfers in to or out of this category within the fair value hierarchy.

+ References

No definition available.

+ Details

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Balance Type:	debit
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X

- Definition

The Fair Value, Measurement with Unobservable Inputs Reconciliation, Non Recurring Basis, Asset Returned To Performing Status (Level 3).

+ References

No definition available.

+ Details

Name:	shbi_FairValueMeasurementWithUnobservableInputsReconciliationNonRecurringBasisAssetReturnToPerformingStatus
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Transfers into assets measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period.

+ References

No definition available.

+ Details

Name:	shbi_FairValueMeasurementWithUnobservableInputsReconciliationNonRecurringBasisAssetTransfersIntoLevel3
Namespace Prefix:	shbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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