XML 99 R89.htm IDEA: XBRL DOCUMENT
v3.23.3

Schedule of Assumptions Used in Determining MSR Value (Details) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |  |
Prepayment speed | 8.00 | 8.12
Average life | 8 years 7 months 2 days | 8 years 5 months 26 days
Discount rate | 12.22 | 11.95

X
- Definition Average Life In Years. + References No definition available. + Details
Name: | SNFCA_AverageLifeInYears
Namespace Prefix: | SNFCA_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the Discount Rate, during the indicated time period. + References No definition available. + Details
Name: | SNFCA_DiscountRate
Namespace Prefix: | SNFCA_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Prepayment speed. + References No definition available. + Details
Name: | SNFCA_PrepaymentSpeeds
Namespace Prefix: | SNFCA_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

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