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Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 2019
Other Comprehensive Income (Loss) [Abstract] |
Components Of Comprehensive Income (Loss) In The Consolidated Statements Of Operations |
|  | Three Months Ended March 31, 2019 |  |  | Three Months Ended March 31, 2018 |
(Dollars in thousands) |  | Before Tax |  |  | Tax Effect |  |  | Net of Tax |  |  | Before Tax |  |  | Tax Effect |  |  | Net of Tax |
Unrealized appreciation (depreciation) ("URA(D)") on securities - temporary |  | $ | 256,630 |  |  | $ | (23,391 | ) |  | $ | 233,239 |  |  | $ | (209,160 | ) |  | $ | 18,746 |  |  | $ | (190,414 | )
URA(D) on securities - OTTI |  |  | (244 | ) |  |  | 70 |  |  |  | (174 | ) |  |  | (189 | ) |  |  | (21 | ) |  |  | (210 | )
Reclassification of net realized losses (gains) included in net income (loss) |  |  | (2,736 | ) |  |  | 914 |  |  |  | (1,822 | ) |  |  | (10,325 | ) |  |  | 1,553 |  |  |  | (8,772 | )
Foreign currency translation adjustments |  |  | 16,598 |  |  |  | (2,546 | ) |  |  | 14,052 |  |  |  | 17,345 |  |  |  | 354 |  |  |  | 17,699 |
Reclassification of benefit plan liability amortization included in net income (loss) |  |  | 1,457 |  |  |  | (306 | ) |  |  | 1,151 |  |  |  | 2,298 |  |  |  | (483 | ) |  |  | 1,815 |
Total other comprehensive income (loss) |  | $ | 271,705 |  |  | $ | (25,259 | ) |  | $ | 246,446 |  |  | $ | (200,031 | ) |  | $ | 20,149 |  |  | $ | (179,882 | )
Reclassification From Accumulated Other Comprehensive Income |
|  | Three Months Ended |  |  |
|  | March 31, |  |  | Affected line item within the statements of
AOCI component |  | 2019 |  |  | 2018 |  |  | operations and comprehensive income (loss)
(Dollars in thousands) |  |  |  |  |  |  |  |
URA(D) on securities |  | $ | (2,736 | ) |  | $ | (10,325 | ) |  | Other net realized capital gains (losses)
|  |  | 914 |  |  |  | 1,553 |  |  | Income tax expense (benefit)
|  | $ | (1,822 | ) |  | $ | (8,772 | ) |  | Net income (loss)
Benefit plan net gain (loss) |  | $ | 1,457 |  |  | $ | 2,298 |  |  | Other underwriting expenses
|  |  | (306 | ) |  |  | (483 | ) |  | Income tax expense (benefit)
|  | $ | 1,151 |  |  | $ | 1,815 |  |  | Net income (loss)
Components Of Accumulated Other Comprehensive Income (Loss), Net Of Tax, In The Consolidated Balance Sheets |
|  | Three Months Ended |  |  | Twelve Months Ended |
|  | March 31, |  |  | December 31, |
(Dollars in thousands) |  | 2019 |  |  | 2018 |
Beginning balance of URA (D) on securities |  | $ | (179,392 | ) |  | $ | 49,969 |
Change to beginning balance due to adoption of ASU 2016-01 |  |  | - |  |  |  | (1,201 | )
Current period change in URA (D) of investments - temporary |  |  | 231,417 |  |  |  | (226,954 | )
Current period change in URA (D) of investments - non-credit OTTI |  |  | (174 | ) |  |  | (1,206 | )
Ending balance of URA (D) on securities |  |  | 51,851 |  |  |  | (179,392 | )
Beginning balance of foreign currency translation adjustments |  |  | (215,747 | ) |  |  | (138,931 | )
Current period change in foreign currency translation adjustments |  |  | 14,052 |  |  |  | (76,816 | )
Ending balance of foreign currency translation adjustments |  |  | (201,695 | ) |  |  | (215,747 | )
Beginning balance of benefit plan net gain (loss) |  |  | (67,418 | ) |  |  | (71,929 | )
Current period change in benefit plan net gain (loss) |  |  | 1,151 |  |  |  | 4,511 |
Ending balance of benefit plan net gain (loss) |  |  | (66,267 | ) |  |  | (67,418 | )
Ending balance of accumulated other comprehensive income (loss) |  | $ | (216,111 | ) |  | $ | (462,557 | )
(Some amounts may not reconcile due to rounding.) |  |  |  |  |  |  |  |

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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e526-108580 + Details
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