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v3.21.2

Long Term Subordinated Notes (Narrative) (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) Item | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Aug. 15, 2021
Debt Instrument [Line Items] |  |  |  |  |  |
Redemption date |  |  | May 01, 2047 |  |  |
Subordinated Debt [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Percentage of principal amount required for redemption |  |  | 100.00% |  |  |
Outstanding debt reduction |  |  | $ 161,441,000 |  |  |
Gain on repurchase and retirement of debt |  |  |  |  | $ 13,183,000 |
Subordinated Debt [Member] | 6.6 % Long Term Subordinated Notes [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, stated interest rate | 6.60% |  | 6.60% |  |  |
Interest payment commencement date |  |  | Nov. 15, 2007 |  |  |
Basis spread on variable rate |  |  | 2.385% |  |  |
Right to defer interest, number of occasions | Item |  |  | 1 |  |  |
Debt instrument, maturity date |  |  | May 01, 2067 |  | May 01, 2067 |
Outstanding debt reduction | $ 0 | $ 11,483,000 | $ 0 | $ 13,183,000 |  |
Gain on repurchase and retirement of debt |  | $ 2,034,000 |  | $ 2,536,000 |  |
Subordinated Debt [Member] | 6.6 % Long Term Subordinated Notes [Member] | Scenario Forecast [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, stated interest rate |  |  |  |  |  | 2.54%
Subordinated Debt [Member] | 6.6 % Long Term Subordinated Notes [Member] | Minimum [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest payment date |  |  | May 3, 2007 |  |  |
Subordinated Debt [Member] | 6.6 % Long Term Subordinated Notes [Member] | Maximum [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest payment date |  |  | May 14, 2017 |  |  |
Right to defer interest on one or more occasions for up to number of consecutive years |  |  | 10 years |  |  |
Senior Notes [Member] | 5.4% Senior notes due 10/15/2014 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, stated interest rate | 5.40% |  | 5.40% |  |  |
Debt instrument, maturity date |  |  | Oct. 15, 2014 |  |  |
Senior Notes [Member] | 4.868% Senior Notes due 6/1/2044 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, stated interest rate | 4.868% |  | 4.868% |  |  |
Debt instrument, maturity date |  |  | Jun. 01, 2044 |  | Jun. 01, 2044 |
Senior Notes [Member] | 3.5% Senior notes due 10/15/2050 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, stated interest rate | 3.50% |  | 3.50% |  |  |
Debt instrument, maturity date |  |  | Oct. 15, 2050 |  | Oct. 15, 2050 |

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