XML 29 R39.htm IDEA: XBRL DOCUMENT
v3.19.3

Loans and Allowance for Loan Losses (Details 4) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Commercial & industrial [Member] |  |  |  |  |
Summary of Impaired loan activity |  |  |  |  |
With no related allowance recorded, Recorded Investment | $ 784 |  | $ 784 |  | $ 575
With no related allowance recorded, Unpaid Principal Balance | 1,154 |  | 1,154 |  | 802
With no related allowance recorded, Related Allowance |  |  |  |  |
With no related allowance recorded, Average Recorded Investment | 1,202 | $ 763 | 1,432 | $ 777 | 370
With no related allowance recorded, Interest Income Recognized | 22 | (9) | 46 | 19 | 21
With a specific allowance recorded, Recorded Investment |  |  |  |  | 125
With a specific allowance recorded, Unpaid Principal Balance |  |  |  |  | 125
With a specific allowance recorded, Related Allowance |  |  |  |  | 61
With a specific allowance recorded, Average Recorded Investment |  |  |  |  | 127
With a specific allowance recorded, Interest Income Recognized |  |  |  |  | 21
Total Recorded Investment | 784 |  | 784 |  | 700
Total Unpaid Principal Balance | 1,154 |  | 1,154 |  | 927
Total Related Allowance |  |  |  |  | 61
Total Average Recorded Investment |  | 763 | 1,432 | 777 | 497
Total Interest Income Recognized | 19 | (9) | 76 | 19 | 42
Commercial real estate - owner occupied [Member] |  |  |  |  |
Summary of Impaired loan activity |  |  |  |  |
With no related allowance recorded, Recorded Investment |  |  |  |  |
With no related allowance recorded, Unpaid Principal Balance |  |  |  |  |
With no related allowance recorded, Related Allowance |  |  |  |  |
With no related allowance recorded, Average Recorded Investment |  |  |  |  |
With no related allowance recorded, Interest Income Recognized |  |  |  |  |
With a specific allowance recorded, Recorded Investment |  |  |  |  |
With a specific allowance recorded, Unpaid Principal Balance |  |  |  |  |
With a specific allowance recorded, Related Allowance |  |  |  |  |
With a specific allowance recorded, Average Recorded Investment |  |  |  |  |
With a specific allowance recorded, Interest Income Recognized |  |  |  |  |
Total Recorded Investment |  |  |  |  |
Total Unpaid Principal Balance |  |  |  |  |
Total Related Allowance |  |  |  |  |
Total Average Recorded Investment |  |  |  |  |
Total Interest Income Recognized |  |  |  |  |
Commercial real estate - nonowner occupied [Member] |  |  |  |  |
Summary of Impaired loan activity |  |  |  |  |
With no related allowance recorded, Recorded Investment | 203 |  | 203 |  | 283
With no related allowance recorded, Unpaid Principal Balance | 203 |  | 203 |  | 283
With no related allowance recorded, Related Allowance |  |  |  |  |
With no related allowance recorded, Average Recorded Investment | 259 | 336 | 259 | 336 | 336
With no related allowance recorded, Interest Income Recognized | 5 | 5 | 15 | 17 | 21
With a specific allowance recorded, Recorded Investment |  |  |  |  |
With a specific allowance recorded, Unpaid Principal Balance |  |  |  |  |
With a specific allowance recorded, Related Allowance |  |  |  |  |
With a specific allowance recorded, Average Recorded Investment |  |  |  |  |
With a specific allowance recorded, Interest Income Recognized |  |  |  |  |
Total Recorded Investment | 203 |  | 203 |  | 283
Total Unpaid Principal Balance | 203 |  | 203 |  | 283
Total Related Allowance |  |  |  |  |
Total Average Recorded Investment | 259 | 336 | 259 | 336 | 336
Total Interest Income Recognized | 5 | 5 | 15 | 17 | 21
Agricultural [Member] |  |  |  |  |
Summary of Impaired loan activity |  |  |  |  |
With no related allowance recorded, Recorded Investment |  |  |  |  |
With no related allowance recorded, Unpaid Principal Balance |  |  |  |  |
With no related allowance recorded, Related Allowance |  |  |  |  |
With no related allowance recorded, Average Recorded Investment |  |  |  |  |
With no related allowance recorded, Interest Income Recognized |  |  |  |  |
With a specific allowance recorded, Recorded Investment |  |  |  |  |
With a specific allowance recorded, Unpaid Principal Balance |  |  |  |  |
With a specific allowance recorded, Related Allowance |  |  |  |  |
With a specific allowance recorded, Average Recorded Investment |  |  |  |  |
With a specific allowance recorded, Interest Income Recognized |  |  |  |  |
Total Recorded Investment |  |  |  |  |
Total Unpaid Principal Balance |  |  |  |  |
Total Related Allowance |  |  |  |  |
Total Average Recorded Investment |  |  |  |  |
Total Interest Income Recognized |  |  |  |  |
Residential real estate [Member] |  |  |  |  |
Summary of Impaired loan activity |  |  |  |  |
With no related allowance recorded, Recorded Investment | 1,481 |  | 1,481 |  | 1,249
With no related allowance recorded, Unpaid Principal Balance | 1,524 |  | 1,524 |  | 1,292
With no related allowance recorded, Related Allowance |  |  |  |  |
With no related allowance recorded, Average Recorded Investment | 1,793 | 1,733 | 1,808 | 1,745 | 1,995
With no related allowance recorded, Interest Income Recognized | 24 | 16 | 74 | 57 | 91
With a specific allowance recorded, Recorded Investment | 526 |  | 526 |  | 862
With a specific allowance recorded, Unpaid Principal Balance | 526 |  | 526 |  | 888
With a specific allowance recorded, Related Allowance | 45 |  | 45 |  | 73
With a specific allowance recorded, Average Recorded Investment | 533 | 424 | 538 | 428 | 426
With a specific allowance recorded, Interest Income Recognized | 6 |  | 19 | 15 | 20
Total Recorded Investment | 2,007 |  | 2,007 |  | 2,111
Total Unpaid Principal Balance | 2,050 |  | 2,050 |  | 2,180
Total Related Allowance | 45 |  | 45 |  | 73
Total Average Recorded Investment | 2,326 | 2,157 | 2,346 | 2,173 | 2,421
Total Interest Income Recognized | 30 | 21 | 93 | 72 | 111
HELOC [Member] |  |  |  |  |
Summary of Impaired loan activity |  |  |  |  |
With no related allowance recorded, Recorded Investment | 17 |  | 17 |  | 20
With no related allowance recorded, Unpaid Principal Balance | 17 |  | 17 |  | 20
With no related allowance recorded, Related Allowance |  |  |  |  |
With no related allowance recorded, Average Recorded Investment | 17 |  | 19 |  | 21
With no related allowance recorded, Interest Income Recognized |  |  | 1 |  | 1
With a specific allowance recorded, Recorded Investment |  |  |  |  |
With a specific allowance recorded, Unpaid Principal Balance |  |  |  |  |
With a specific allowance recorded, Related Allowance |  |  |  |  |
With a specific allowance recorded, Average Recorded Investment |  |  |  |  |
With a specific allowance recorded, Interest Income Recognized |  |  |  |  |
Total Recorded Investment | 17 |  | 17 |  | 20
Total Unpaid Principal Balance | 17 |  | 17 |  | 20
Total Related Allowance |  |  |  |  |
Total Average Recorded Investment | 17 |  | 19 |  | 21
Total Interest Income Recognized |  |  | 1 |  | 1
Consumer [Member] |  |  |  |  |
Summary of Impaired loan activity |  |  |  |  |
With no related allowance recorded, Recorded Investment | 17 |  | 17 |  | 93
With no related allowance recorded, Unpaid Principal Balance | 17 |  | 17 |  | 93
With no related allowance recorded, Related Allowance |  |  |  |  |
With no related allowance recorded, Average Recorded Investment | 18 | 102 | 20 | 106 | 104
With no related allowance recorded, Interest Income Recognized |  | 2 | 1 | 5 | 7
With a specific allowance recorded, Recorded Investment |  |  |  |  | 77
With a specific allowance recorded, Unpaid Principal Balance |  |  |  |  | 77
With a specific allowance recorded, Related Allowance |  |  |  |  | 4
With a specific allowance recorded, Average Recorded Investment |  | 90 |  | 92 | 91
With a specific allowance recorded, Interest Income Recognized |  | 1 |  | 4 | 6
Total Recorded Investment | 17 |  | 17 |  | 170
Total Unpaid Principal Balance | 17 |  | 17 |  | 170
Total Related Allowance |  |  |  |  | 4
Total Average Recorded Investment | 18 | 192 | 20 | 198 | 195
Total Interest Income Recognized |  | $ 3 | $ 1 | $ 9 | $ 13

X
- Definition Amount of related allowance for which there is no related allowance for credit losses. + References No definition available. + Details
Name: | sbfg_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordRelatedAllowance
Namespace Prefix: | sbfg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Impaired Financing Receivable with specific allowance recorded Related Allowance. + References No definition available. + Details
Name: | sbfg_ImpairedFinancingReceivableWithSpecificAllowanceRecordedRelatedAllowance
Namespace Prefix: | sbfg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Impaired loan activity. + References No definition available. + Details
Name: | sbfg_ImpairedLoanActivityAbstract
Namespace Prefix: | sbfg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5258-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment in impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment in impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sbfg_CommercialAndIndustrialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sbfg_CommercialRealEstateNonownerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sbfg_AgriculturalFarmlandPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |