XML 118 R101.htm IDEA: XBRL DOCUMENT
v3.20.4

Bank Deposits (Scheduled Maturities of Certificates of Deposit) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deposits Liabilities Balance Sheet Reported Amounts [Abstract] |  |
Within one year | $ 2,719 | $ 5,305
One to three years | 409 | 360
Three to five years | 254 | 13
Certificates of deposit, less than $100,000 | 3,382 | 5,678
Within one year | 63,650 | 441,341
One to three years | 30,622 | 68,855
Three to five years |  | 7,084
Certificates of deposit, $100,000 and greater | 94,272 | 517,280
Total certificates of deposit | $ 97,654 | $ 522,958

X
- Definition Time deposit maturities, less than one hundred thousand, next rolling twelve months. + References No definition available. + Details
Name: | sf_TimeDepositMaturitiesLessThanOneHundredThousandNextRollingTwelveMonths
Namespace Prefix: | sf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Time deposit maturities, less than one hundred thousand, over three rolling years. + References No definition available. + Details
Name: | sf_TimeDepositMaturitiesLessThanOneHundredThousandOverThreeRollingYears
Namespace Prefix: | sf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Time deposit maturities, less than one hundred thousand, rolling years one to three. + References No definition available. + Details
Name: | sf_TimeDepositMaturitiesLessThanOneHundredThousandRollingYearsOneToThree
Namespace Prefix: | sf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Time deposit maturities, one hundred thousand or more, next rolling twelve months. + References No definition available. + Details
Name: | sf_TimeDepositMaturitiesOneHundredThousandOrMoreNextRollingTwelveMonths
Namespace Prefix: | sf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Time deposit maturities, one hundred thousand or more, over three rolling years. + References No definition available. + Details
Name: | sf_TimeDepositMaturitiesOneHundredThousandOrMoreOverThreeRollingYears
Namespace Prefix: | sf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Time deposit maturities, one hundred thousand or more, rolling one to three years. + References No definition available. + Details
Name: | sf_TimeDepositMaturitiesOneHundredThousandOrMoreRollingOneToThreeYears
Namespace Prefix: | sf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Amount of time deposit liabilities, including certificates of deposit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=116652737&loc=d3e64164-112818 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_TimeDeposits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher SEC -Name Industry Guide -Number 3 -Section V -Paragraph D-E + Details
Name: | us-gaap_TimeDeposits100000OrMore
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of time deposit liabilities, including certificates of deposit, in denominations of less than $100,000. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher SEC -Name Industry Guide -Number 3 -Section V -Paragraph D-E + Details
Name: | us-gaap_TimeDepositsLessThan100000
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant