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v3.23.1

Investments (Available-for-sale allowance for credit losses roll forward) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |
Allowance for Credit Losses, Period Beginning Balance | $ 45,721 | $ 9,724
Current provision for securities without prior allowance | 3,730 | 18,588
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration | 0 | 8,318
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | (13,259) | 3,463
Reductions for securities sold | (2,627) | (1,395)
Reductions for securities identified as intent (or requirement) to sell during the period | (11) | (1,099)
Allowance for Credit Losses, Period Ending Balance | 33,554 | 37,599
Foreign Government [Member] |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |
Allowance for Credit Losses, Period Beginning Balance | 284 | 46
Current provision for securities without prior allowance | 0 | 103
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration | 0 | 0
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | (248) | 1
Reductions for securities sold | 0 | 0
Reductions for securities identified as intent (or requirement) to sell during the period | 0 | 0
Allowance for Credit Losses, Period Ending Balance | 36 | 150
Obligations of States and Political Subdivisions [Member] |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |
Allowance for Credit Losses, Period Beginning Balance | 1,024 | 137
Current provision for securities without prior allowance | 50 | 1,732
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration | 0 | 0
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | (254) | 132
Reductions for securities sold | (83) | (10)
Reductions for securities identified as intent (or requirement) to sell during the period | 0 | 0
Allowance for Credit Losses, Period Ending Balance | 737 | 1,991
Corporate Securities [Member] |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |
Allowance for Credit Losses, Period Beginning Balance | 30,330 | 6,682
Current provision for securities without prior allowance | 2,854 | 15,393
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration | 0 | 0
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | (13,964) | 3,337
Reductions for securities sold | (2,453) | (1,247)
Reductions for securities identified as intent (or requirement) to sell during the period | (11) | (1,099)
Allowance for Credit Losses, Period Ending Balance | 16,756 | 23,066
Collateralized Loan Obligations and Other Asset Backed Securities [Member] |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |
Allowance for Credit Losses, Period Beginning Balance | 2,375 | 939
Current provision for securities without prior allowance | 787 | 1,288
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration | 0 | 0
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | 736 | 59
Reductions for securities sold | (3) | (3)
Reductions for securities identified as intent (or requirement) to sell during the period | 0 | 0
Allowance for Credit Losses, Period Ending Balance | 3,895 | 2,283
Residential Mortgage Backed Securities [Member] |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |
Allowance for Credit Losses, Period Beginning Balance | 11,597 | 1,909
Current provision for securities without prior allowance | 12 | 0
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration | 0 | 8,318
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | 219 | (63)
Reductions for securities sold | (88) | (135)
Reductions for securities identified as intent (or requirement) to sell during the period | 0 | 0
Allowance for Credit Losses, Period Ending Balance | 11,740 | 10,029
Commercial Mortgage Backed Securities [Member] |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |
Allowance for Credit Losses, Period Beginning Balance | 111 | 11
Current provision for securities without prior allowance | 27 | 72
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration | 0 | 0
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | 252 | (3)
Reductions for securities sold | 0 | 0
Reductions for securities identified as intent (or requirement) to sell during the period | 0 | 0
Allowance for Credit Losses, Period Ending Balance | $ 390 | $ 80

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- Definition Amount of allowance 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). + 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 (a) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 9 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aaa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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- Definition Amount of expense (reversal of expense) for allowance 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), not intended to be sold and not more likely than not will be required to sell before recovery of amortized cost basis, with previously recorded allowance. + 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 (f) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 + Details
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