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v3.20.2

Commitments and Credit Risk - Off-balance-sheet and Credit Risk (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019
Unused Commitments to Extend Credit | $ 416.2 | $ 317.4
Loans and Leases Receivable, Commitments, Fixed Rates | $ 94.3 |
weighted-average rate | 4.62% |
Single and Multi Family Residential Real Estate [Member] |  |
Diversified portfolio, loans | $ 663.0 |
Minimum |  |
Commitments to Originate Fixed Rate Loans Rates | 2.38% |
Maximum |  |
Commitments to Originate Fixed Rate Loans Rates | 5.75% |

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- Definition Represents the Commitments to Originate Fixed Rate Loans Rates, during the indicated time period. + References No definition available. + Details
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- Definition Diversified portfolio, loans aggregating are secured by single and multi-family residential real estate + References No definition available. + Details
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Balance Type: | debit
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- Definition weighted average rate. + References No definition available. + Details
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Namespace Prefix: | smbc_
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Period Type: | duration

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- Definition Reflects the amount of cash required to fully fund agreements to provide advances to borrowers and lessees at stated interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=108315417&loc=d3e61044-112788 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108315417&loc=d3e61082-112788 + Details
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- Definition Unused amount of commitments to extend credit to customers. + References No definition available. + Details
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Balance Type: | credit
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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Period Type: |

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- Details
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