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Investments (OTTI) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |
Available-for-sale, Credit Loss, Not Previously Recorded | $ 15,787 |
Credit loss expense, Not Previously Recorded | 16,027 |
Other Impairment Charges | 15,602 |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | 31,629 | $ 104
Change in OTTI Balance | 31,525 |
Commercial Mortgage Loans [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |
Other Impairment Charges | 0 |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | 240 | 0
Commercial mortgage loan, Credit Loss, Not Previously Recorded | 240 |
Other Investments [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |
Other Impairment Charges | 0 |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | 0 | 39
Other investments, Credit Loss, Not Previously Recorded | 0 |
AFS Fixed Income Securities [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | 31,389 | 65
AFS Fixed Income Securities [Member] | US Treasury and Government [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |
Available-for-sale, Credit Loss, Not Previously Recorded | 0 |
Other Impairment Charges | 14 |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | 14 | 0
AFS Fixed Income Securities [Member] | Foreign Government [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |
Available-for-sale, Credit Loss, Not Previously Recorded | 21 |
Other Impairment Charges | 0 |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | 21 | 0
AFS Fixed Income Securities [Member] | Obligations of States and Political Subdivisions [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |
Available-for-sale, Credit Loss, Not Previously Recorded | 29 |
Other Impairment Charges | 62 |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | 91 | 65
AFS Fixed Income Securities [Member] | Corporate Securities [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |
Available-for-sale, Credit Loss, Not Previously Recorded | 13,412 |
Other Impairment Charges | 11,603 |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | 25,015 | 0
AFS Fixed Income Securities [Member] | Collateralized Loan Obligations and Other Asset Backed Securities [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |
Available-for-sale, Credit Loss, Not Previously Recorded | 1,565 |
Other Impairment Charges | 2,000 |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | 3,565 | 0
AFS Fixed Income Securities [Member] | Commercial Mortgage Backed Securities [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |
Available-for-sale, Credit Loss, Not Previously Recorded | 38 |
Other Impairment Charges | 1,852 |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | 1,890 | 0
AFS Fixed Income Securities [Member] | Residential Mortgage Backed Securities [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |
Available-for-sale, Credit Loss, Not Previously Recorded | 722 |
Other Impairment Charges | 71 |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | 793 | $ 0
Securities intended to sell [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | $ 15,602 |

X
- Definition The increase (decrease) in OTTI charges compared to the prior period. + References No definition available. + Details
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- Definition Amount of credit related OTTI on commercial mortgage loans. + References No definition available. + Details
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- Definition Amount of expense for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), for which no credit loss was previously recorded. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118955579&loc=SL82922900-210455 + Details
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- Definition The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting. + References No definition available. + Details
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