XML 59 R62.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Loan Servicing, Mortgage Origination, and Loans Held for Sale (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Loan Servicing, Mortgage Origination, and Loans Held for Sale |
Summary of changes in the fair value of MSRs and its offsetting hedge | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ |  | Year Ended December 31, |
(Dollars in thousands) |  | ​ | 2019 | ​ | 2018 | ​ | 2017 |
Increase (decrease) in fair value of MSRs | ​ | ​ | $ | (6,976) | ​ | $ | 1,861 | ​ | $ | (595) | ​
Decay of MSRs | ​ | ​ |  | (4,589) | ​ |  | (4,215) | ​ |  | (3,762) | ​
Gain (loss) related to derivatives | ​ | ​ |  | 3,967 | ​ |  | (953) | ​ |  | 200 | ​
Net effect on statements of income | ​ | ​ | $ | (7,598) | ​ | $ | (3,307) | ​ | $ | (4,157) | ​
Schedule of characteristics and sensitivity analysis of the MSR | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
(Dollars in thousands) |  | 2019 |  | 2018 |
Composition of residential loans serviced for others | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fixed-rate mortgage loans | ​ | ​ | 99.8 | % | ​ | 99.8 | %
Adjustable-rate mortgage loans | ​ | ​ | 0.2 | % | ​ | 0.2 | %
Total | ​ | ​ | 100.0 | % | ​ | 100.0 | %
Weighted average life | ​ | ​ | 6.55 | years | ​ | 7.88 | years
Constant Prepayment rate (CPR) | ​ | ​ | 10.3 | % | ​ | 7.3 | %
Weighted average discount rate | ​ | ​ | 9.4 | % | ​ | 9.4 | %
Effect on fair value due to change in interest rates | ​ | ​ | ​ | ​ | ​ | ​ | ​
25 basis point increase | ​ | $ | 2,477 | ​ | $ | 1,504 | ​
50 basis point increase | ​ | ​ | 4,452 | ​ |  | 2,740 | ​
25 basis point decrease | ​ | ​ | (2,938) | ​ |  | (1,981) | ​
50 basis point decrease | ​ | ​ | (6,228) | ​ |  | (4,421) | ​

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

X
- Definition Tabular disclosure of changes in the fair value of Mortgage Servicing Rights (MSRs) and its offsetting hedge. + References No definition available. + Details
Name: | ssb_ScheduleOfChangesInFairValueOfMortgageServicingRightsAndOffsettingHedgeTableTextBlock
Namespace Prefix: | ssb_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure related to composition of residential mortgages serviced for others, characteristics and sensitivity analysis of the mortgage servicing rights. + References No definition available. + Details
Name: | ssb_ScheduleOfCompositionOfResidentialMortgagesServicedForOthersAndCharacteristicsAndSensitivityAnalysisOfMortgageServicingRightsTableTextBlock
Namespace Prefix: | ssb_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration