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v3.21.1

Borrowings (Trust Preferred Securities) (Narrative) (Details) - USD ($) |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 11, 2018 | May 01, 2012 | Apr. 30, 2009 | Dec. 31, 2008 | Feb. 05, 2007 | Dec. 31, 2011 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2009 | Dec. 31, 2008 | Oct. 31, 2018 | Dec. 31, 2014 | Mar. 31, 2009
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment in common trust securities |  |  |  |  | $ 1,500,000 |  | $ 838,000 | $ 838,000 |  | $ 838,000 |  |  |  |
Preferred stock dividends payable |  |  |  |  |  |  | 195,000 | 272,000 |  |  |  |  |  |
Marketable securities |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11,500,000
Loan amount |  |  |  |  |  |  | $ 300,449,000 | $ 283,138,000 |  |  |  |  |  |
Trust Preferred Securities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trust preferred securities |  |  |  |  | $ 51,500,000 |  |  |  |  |  |  |  |  | $ 22,900,000
Debt instrument term |  |  |  |  | 20 years |  |  |  |  |  |  |  |  |
Trust preferred securities issued |  |  |  |  | $ 51,500,000 |  |  |  |  |  |  |  |  |
Trust preferred securities issued to third party |  |  |  |  | 50,000,000.0 |  |  |  |  |  |  |  |  |
Trust preferred securities issued to parent |  |  |  |  | $ 1,500,000 |  |  |  |  |  |  |  |  |
Initial interest rate |  | 9.22% |  |  |  |  |  |  |  |  |  |  |  |
Period of initial interest rate |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
LIBOR period |  | 3 months |  |  |  |  |  |  |  |  |  |  |  |
Spread over LIBOR |  | 4.00% |  |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  | Apr. 30, 2027 | Apr. 30, 2027 |  |  |  |  |  |
Principal payment |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |
Initial period of payoff restriction |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |
Percentage of principal that may be paid without penalty after initial restriction period |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |
Period of waiver on all financial covenants |  |  |  |  |  |  |  |  |  |  | 9 years |  |  |
Financial covenant waiver payment due |  |  |  | $ 1,600,000 |  |  |  |  |  |  | $ 1,600,000 |  | $ 270,000 |
Financial covenant waiver payment |  |  |  | $ 1,100,000 |  | $ 270,000 |  |  |  |  |  |  |  |
Trust preferred dividends paid |  |  |  |  |  |  | $ 1,400,000 | $ 1,800,000 | $ 1,600,000 |  |  |  |  |
Frequency of interest payment |  |  |  |  |  |  | 3 months |  |  |  |  |  |  |
Extinguishment of debt |  |  | $ 22,900,000 |  |  |  |  |  |  |  |  |  |  |
Amortization of debt discount |  |  |  |  |  |  |  |  |  | $ 106,000 |  |  |  |
Gain on retirement of subordinated debt |  |  | 10,700,000 |  |  |  |  |  |  |  |  |  |  |
Write-off of deferred loan costs |  |  | $ 749,000 |  |  |  |  |  |  |  |  |  |  |
Loan amount | $ 1,600,000 |  |  |  |  |  | $ 27,913,000 | $ 27,913,000 |  |  |  |  |  |
Initial payment |  |  |  |  |  |  |  |  |  |  |  | $ 1,100,000 |  |
Contractual obligation due in October 2021 |  |  |  |  |  |  | 270,000 |  |  |  |  |  |  |
Contractual obligation due in October 2025 |  |  |  |  |  |  | $ 225,000 |  |  |  |  |  |  |

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