Fair Value Measurements (Estimated Fair Values of Financial Assets and Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financial assets, Estimated Fair Value
Investment securities held to maturity	$ 6,451	$ 6,806
Fair Value, Inputs, Level 1 [Member] \| Carrying Amount [Member]
Financial assets, Estimated Fair Value
Cash and cash equivalents	43,916	75,938
Fair Value, Inputs, Level 1 [Member] \| Estimated Fair Value [Member]
Financial assets, Estimated Fair Value
Cash and cash equivalents	43,916	75,938
Fair Value, Inputs, Level 2 [Member] \| Carrying Amount [Member]
Financial assets, Estimated Fair Value
Investment securities held to maturity	6,241	6,704
Loans, net	1,037,952	862,799
Restricted securities	3,069	1,650
Bank owned life insurance	107	105
Financial liabilities, Estimated Fair Value
Noninterest-bearing demand	326,020	261,575
Checking plus interest	227,973	203,724
Money market	221,589	181,871
Savings	154,180	90,051
Club	1,565	393
Certificates of deposit, $100,000 or more	113,618	120,602
Other time	161,250	139,273
Short-term borrowings	1,469	3,203
Fair Value, Inputs, Level 2 [Member] \| Estimated Fair Value [Member]
Financial assets, Estimated Fair Value
Investment securities held to maturity	6,451	6,806
Loans, net	1,036,002	867,594
Restricted securities	3,069	1,650
Bank owned life insurance	107	105
Financial liabilities, Estimated Fair Value
Noninterest-bearing demand	326,020	261,575
Checking plus interest	227,973	203,724
Money market	221,589	181,871
Savings	154,180	90,051
Club	1,565	393
Certificates of deposit, $100,000 or more	112,271	119,914
Other time	158,320	135,940
Short-term borrowings	$ 1,469	$ 3,203

Bank Owned Life Insurance, Fair Value Disclosure

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- Definition

Certificates Of Deposit $100,000 or more, Deposits, Fair Value Disclosure

+ References

No definition available.

+ Details

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- Definition

Checking Plus Interest, Deposits, Fair Value Disclosure

+ References

No definition available.

+ Details

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- Definition

Club, Deposits, Fair Value Disclosure

+ References

No definition available.

+ Details

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- Definition

Money Market, Deposits, Fair Value Disclosure

+ References

No definition available.

+ Details

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- Definition

Noninterest Bearing Demand, Deposits, Fair Value Disclosure

+ References

No definition available.

+ Details

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- Definition

Other Time, Deposits, Fair Value Disclosure

+ References

No definition available.

+ Details

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- Definition

Restricted Securities, Fair Value Disclosure

+ References

No definition available.

+ Details

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- Definition

Savings, Deposits, Fair Value Disclosure

+ References

No definition available.

+ Details

Name:	shbi_SavingsDepositsFairValueDisclosure
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Balance Type:	credit
Period Type:	instant

- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

No definition available.

+ Details

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- References

No definition available.

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- References

No definition available.

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- Definition

Fair value of investments in debt securities classified as held-to-maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

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- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2196772

+ Details

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Period Type:	instant

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

+ References

No definition available.

+ Details

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