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v3.4.0.3

Fair Value of Assets and Liabilities (Details 1) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015
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Impaired Loans [Member] |  |
Summary of fair value measurements of assets measured at fair value on a non-recurring basis |  |
Assets, Fair value, Nonrecurring | $ 3,144 | $ 3,011
Impaired Loans [Member] | Level 1 [Member] |  |
Summary of fair value measurements of assets measured at fair value on a non-recurring basis |  |
Assets, Fair value, Nonrecurring |  |
Impaired Loans [Member] | Level 2 [Member] |  |
Summary of fair value measurements of assets measured at fair value on a non-recurring basis |  |
Assets, Fair value, Nonrecurring |  |
Impaired Loans [Member] | Level 3 [Member] |  |
Summary of fair value measurements of assets measured at fair value on a non-recurring basis |  |
Assets, Fair value, Nonrecurring | $ 3,144 | $ 3,011
Mortgage Servicing Rights [Member] |  |
Summary of fair value measurements of assets measured at fair value on a non-recurring basis |  |
Assets, Fair value, Nonrecurring | $ 6,311 | $ 2,585
Mortgage Servicing Rights [Member] | Level 1 [Member] |  |
Summary of fair value measurements of assets measured at fair value on a non-recurring basis |  |
Assets, Fair value, Nonrecurring |  |
Mortgage Servicing Rights [Member] | Level 2 [Member] |  |
Summary of fair value measurements of assets measured at fair value on a non-recurring basis |  |
Assets, Fair value, Nonrecurring |  |
Mortgage Servicing Rights [Member] | Level 3 [Member] |  |
Summary of fair value measurements of assets measured at fair value on a non-recurring basis |  |
Assets, Fair value, Nonrecurring | $ 6,311 | $ 2,585

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- Definition Fair value measurements of assets measured at fair value on a non recurring basis. + References No definition available. + Details
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Namespace Prefix: | sbfg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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- Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |