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Deposits | 12 Months Ended
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Dec. 31, 2020
Deposits [Abstract] |
Deposits | DepositsThe aggregate amount of certificates of deposit of $250,000 or more and other time deposits of $250,000 or more outstanding at December 31, 2020 and 2019 was $453.16 million and $749.44 million, respectively. The following table shows the amount of certificates of deposit of $250,000 or more and other time deposits of $250,000 or more outstanding at December 31, 2020, by time remaining until maturity.
(Dollars in thousands) |  |
Under 3 months |  | $ | 117,444 |
4 – 6 months |  | 83,262 |
7 – 12 months |  | 80,237 |
Over 12 months |  | 172,214 |
Total |  | $ | 453,157 |
The following table shows scheduled maturities of time deposits, including both private and public funds, at December 31, 2020.
(Dollars in thousands) |  |
2021 |  | $ | 834,723 |
2022 |  | 170,270 |
2023 |  | 108,353 |
2024 |  | 41,353 |
2025 |  | 7,789 |
Thereafter |  | 4,869 |
Total |  | $ | 1,167,357 |

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- Definition The entire disclosure for deposit liabilities including data and tables. It may include a description of the entity's deposit liabilities, the aggregate amount of time deposits (including certificates of deposit) in denominations of $250,000 or more at the balance sheet date; the aggregate amount of any demand deposits that have been reclassified as loan balances, such as overdrafts, at the balance sheet date; deposits that are received on terms other than those in the normal course of business, the amount of accrued interest on deposit liabilities; securities, mortgage loans or other financial instruments that serve as collateral for deposits; for time deposits having a remaining term of more than one year, the aggregate amount of maturities for each of the five years following the balance sheet date; and the weighted average interest rate for all deposit liabilities held by the entity. + References No definition available. + Details
Name: | source_DepositLiabilitiesDisclosureTextBlock
Namespace Prefix: | source_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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