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v3.19.3.a.u2

Comprehensive Income (Components of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance December, | $ (77,956) |  |  |
Cumulative effect adjustment |  |  | $ 25,000 |
Amounts reclassified into net income: Non-credit other-than-temporary impairment | 0 | $ 0 | 68 |
Amount reclassified from AOCI, HTM | (46) | 87 | (116) |
OCI before reclassifications, Defined Benefit Pension and Post Retirement Plans | (10,898) | (8,906) | (3,700) |
Amounts reclassified from AOCI,All other | 530 | 31,316 | (4,537) |
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax | (8,799) | (7,226) | (2,333) |
Other comprehensive income (loss) | 159,706 | (73,107) | 36,120 |
Balance December, | 81,750 | (77,956) |  |
Accumulated Other-than-Temporary Impairment [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance, December 31, 2017 |  |  | (59) |
Balance December, | (71) | (71) |  |
Cumulative effect adjustment |  |  | (12) |
OCI before reclassifications | 0 | 0 |  |
Other comprehensive income (loss) | 0 | 0 |  |
Balance December, | (71) | (71) | (71) |
Accumulated Defined Benefit Plans Adjustment [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance, December 31, 2017 |  |  | (60,405) |
Balance December, | (79,844) | (72,618) |  |
Cumulative effect adjustment |  |  | (12,213) |
OCI before reclassifications, Defined Benefit Pension and Post Retirement Plans | (10,898) | (8,906) |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax | 2,099 | 1,680 |  |
Balance December, | (88,643) | (79,844) | (72,618) |
Accumulated other comprehensive (loss) income [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance, December 31, 2017 |  |  | 20,170 |
Balance December, | (77,956) | (4,849) |  |
Cumulative effect adjustment |  |  | (25,019) |
OCI before reclassifications | 157,123 | (106,190) |  |
Amount reclassified from AOCI | 2,583 | 33,083 |  |
Other comprehensive income (loss) | 159,706 | (73,107) | 36,120 |
Balance December, | 81,750 | (77,956) | (4,849) |
Held-to-maturity Securities [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance, December 31, 2017 |  |  | (14) |
Balance December, | 71 | (16) |  |
Cumulative effect adjustment |  |  | (2) |
OCI before reclassifications | 0 | 0 |  |
Other comprehensive income (loss) | (46) | 87 |  |
Balance December, | 25 | 71 | (16) |
Available-for-sale Securities [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance, December 31, 2017 |  |  | 80,648 |
Balance December, | 1,888 | 67,856 |  |
Cumulative effect adjustment |  |  | (12,792) |
OCI before reclassifications | 168,021 | (97,284) |  |
Amounts reclassified from AOCI,All other | 530 | 31,316 |  |
Other comprehensive income (loss) | 168,551 | (65,968) |  |
Balance December, | 170,439 | 1,888 | 67,856 |
Investments [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance, December 31, 2017 |  |  | 80,575 |
Balance December, | 1,888 | 67,769 |  |
Cumulative effect adjustment |  |  | (12,806) |
OCI before reclassifications | 168,021 | (97,284) |  |
Amount reclassified from AOCI | 484 | 31,403 |  |
Other comprehensive income (loss) | 168,505 | (65,881) |  |
Balance December, | 170,393 | 1,888 | 67,769 |
Accounting Standards Update 2016-01 [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Cumulative effect adjustment | $ 0 | (30,726) | 0 |
Accounting Standards Update 2016-01 [Member] | Accumulated other comprehensive (loss) income [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Cumulative effect adjustment |  | $ 0 | $ 30,726 | $ 0

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