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Long Term Subordinated Notes (Narrative) (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 USD ($)
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
6.6 % Long Term Subordinated Notes [Member] | Subordinated Debt [Member] |
Debt Instrument [Line Items] |
Debt instrument, stated interest rate | 6.60%
Debt instrument, maturity date | May 01, 2067
Interest payment commencement date | Nov. 15, 2007
Reset quarterly interest rate | 5.07%
Basis spread on variable rate | 2.385%
Right to defer interest on one or more occasions for up to number of consecutive years | 1 year
6.6 % Long Term Subordinated Notes [Member] | Subordinated Debt [Member] | Minimum [Member] |
Debt Instrument [Line Items] |
Interest payment date | May 3, 2007
6.6 % Long Term Subordinated Notes [Member] | Subordinated Debt [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
5.4% Senior notes due 10/15/2014 [Member] | Senior Notes [Member] |
Debt Instrument [Line Items] |
Debt instrument, stated interest rate | 5.40%
Debt instrument, maturity date | Oct. 15, 2014
4.868% Senior notes due 6/1/2044 [Member] | Senior Notes [Member] |
Debt Instrument [Line Items] |
Debt instrument, stated interest rate | 4.868%
Debt instrument, maturity date | Jun. 01, 2044

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- Definition Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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