XML 45 R35.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Earnings Per Share (Details) - $ / shares |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Jan. 25, 2022 | Jan. 10, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Earnings Per Share (Details) [Line Items] |  |  |  |  |
Common stock dividend payable, percentage | 5.00% | 5.00% |  | 5.00% |
Closing price per share |  | $ 19.89 |  |  |
Common stock, shares outstanding |  |  |  | 345,000 |
Minimum [Member] |  |  |  |  |
Earnings Per Share (Details) [Line Items] |  |  |  |  |
Earnings per share, diluted |  |  | $ 0.03 |  |
Common stock, shares authorized | 10,000,000 |  |  |  |
Maximum [Member] |  |  |  |  |
Earnings Per Share (Details) [Line Items] |  |  |  |  |
Earnings per share, diluted |  |  |  |  | $ 0.07
Common stock, shares authorized | 10,500,000 |  |  |  |

X
- Definition The percentage rate used to calculate dividend payments on common stock. + References No definition available. + Details
Name: | sbfg_CommonStockDividendRatePercentage
Namespace Prefix: | sbfg_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. + References No definition available. + Details
Name: | sbfg_CommonStockShareAuthorized
Namespace Prefix: | sbfg_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | sbfg_EarningsPerShareDetailsLineItems
Namespace Prefix: | sbfg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockSharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Dividends declared in the period and the contractual amount of dividends (or interest on participating income bonds) that must be paid per security. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 60B -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126958026&loc=SL5780133-109256 + Details
Name: | us-gaap_EarningsPerShareBasicDistributed
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
Name: | us-gaap_SharePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |