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Junior Subordinated Deferrable Interest Debentures (Tables) | 12 Months Ended
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Dec. 31, 2020
Junior subordinated interest deferrable debentures, major types of business trusts | The following table illustrates key information about each of the Debentures and their interest rates at December 31, 2020:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Junior |  | ​ |  | ​ | ​ | ​ |  | ​ |  | ​ |  | ​ | ​
​ | ​ | Subordinated | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Deferrable | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Interest | ​ | Repricing | ​ | Interest | ​ | Interest | ​ | ​ | ​ | Optional | ​
​ | ​ | Debentures | ​ | Frequency | ​ | Rate | ​ | Rate Index(1) | ​ | Maturity Date | ​ | Redemption Date(1) | ​
​ | ​ | (Dollars in Thousands) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Trust VIII | ​ | $ | 25,774 |  | Quarterly |  | 3.29 | % | LIBOR | + | 3.05 |  | October 2033 |  | October 2008 | ​
Trust IX | ​ |  | 41,238 |  | Quarterly |  | 1.85 | % | LIBOR | + | 1.62 |  | October 2036 |  | October 2011 | ​
Trust X | ​ |  | 21,021 |  | Quarterly |  | 1.86 | % | LIBOR | + | 1.65 |  | February 2037 |  | February 2012 | ​
Trust XI | ​ |  | 25,990 |  | Quarterly |  | 1.85 | % | LIBOR | + | 1.62 |  | July 2037 |  | July 2012 | ​
Trust XII | ​ |  | 20,619 |  | Quarterly |  | 1.68 | % | LIBOR | + | 1.45 |  | September 2037 |  | September 2012 | ​
​ | ​ | $ | 134,642 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(1) | The Capital Securities may be redeemed in whole or in part on any interest payment date after the Optional Redemption Date.

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- Definition Tabular disclosure of borrowings under junior subordinated debt agreements, including restrictive covenants, collateral, interest rates and due dates, amounts due by date and amount owed in total. + References No definition available. + Details
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