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Reinsurance, Commitments and Contingencies (Details Narrative) - USD ($) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract] |  |
Funds reserved and accrued to settle investor related claims | $ 2,412,652 | $ 20,583,618
Gain (Loss) on Sale of Mortgage Loans | $ 100,000,000 |
Derivative, Maturity Date | Jun. 04, 2022 |
Commitments to fund new residential construction loans | $ 249,815,000 |
Commitments to fund new residential construction loans funded | $ 139,207,610 |

X
- Definition Represents the monetary amount of Commitments to fund new residential construction loans, as of the indicated date. + References No definition available. + Details
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X
- Definition Represents the monetary amount of Commitments to fund new residential construction loans funded, as of the indicated date. + References No definition available. + Details
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Namespace Prefix: | snfc_
Data Type: | xbrli:monetaryItemType
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X
- Definition Represents the monetary amount of Funds reserved and accrued to settle investor related claims, as of the indicated date. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Date the derivative contract matures, in YYYY-MM-DD format. + References No definition available. + Details
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- Definition The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123605502&loc=d3e21310-158488 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123605502&loc=d3e21286-158488 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123605549&loc=d3e21493-158490 + Details
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