XML 99 R87.htm IDEA: XBRL DOCUMENT
v3.24.1.1.u2

Schedule of Assumptions Used in Determining MSR Value (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |  |
Prepayment speed | 9.00 | 9.70
Average life | 8 years 1 month 13 days | 7 years 9 months 14 days
Discount rate | 12.07 | 11.85

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