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v3.21.2

Borrowings, Line of Credit and Subordinated Debt - Subordinated debt (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 01, 2021 | Sep. 30, 2021 | Sep. 30, 2021 | Dec. 31, 2020 | Sep. 28, 2018
Sevier County Bancshares Inc [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Subordinated debt | $ 2,500 | $ 2,500 | $ 2,500 |  |
Subordinated Debt [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal amount |  |  |  |  | $ 40,000
Interest rate |  |  |  |  | 5.625%
Debt issuance costs |  | 591 | 591 | $ 654 | $ 842
Amortization expense of debt issuance costs |  | $ 21 | $ 63 |  |
Subordinated Debt [Member] | Sevier County Bancshares Inc [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate | 6.75% |  |  |  |
Subordinated Debt [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  | 2.55% |
Subordinated Debt [Member] | London Interbank Offered Rate (LIBOR) [Member] | Sevier County Bancshares Inc [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (as a percent) | 5.3025% |  |  |  |

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- Definition Amount of subordinated debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References No definition available. + Details
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