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Investments - Schedule of the Allowance for Credit Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  |  | $ (245) | $ 0
(Increase) in allowance for credit losses |  |  | (113) | (135)
Reduction in credit losses due to AFS securities sold during the year |  |  |  | 4
Gains from recoveries of amounts previously written off |  |  | 72 | 47
Ending balance | $ (286) | $ (84) | (286) | (84)
Net gains from recoveries (credit losses) on AFS securities | 35 | (1) | (41) | (84)
Obligations of state and political subdivisions |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  |  | 0 | 0
(Increase) in allowance for credit losses |  |  | (3) | 0
Reduction in credit losses due to AFS securities sold during the year |  |  |  | 0
Gains from recoveries of amounts previously written off |  |  | 0 | 0
Ending balance | (3) | 0 | (3) | 0
Corporate securities |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  |  | (241) | 0
(Increase) in allowance for credit losses |  |  | (109) | (129)
Reduction in credit losses due to AFS securities sold during the year |  |  |  | 3
Gains from recoveries of amounts previously written off |  |  | 70 | 46
Ending balance | (280) | (80) | (280) | (80)
Asset backed securities |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  |  | 0 | 0
(Increase) in allowance for credit losses |  |  | (1) | 0
Reduction in credit losses due to AFS securities sold during the year |  |  |  | 0
Gains from recoveries of amounts previously written off |  |  | 0 | 0
Ending balance | (1) | 0 | (1) | 0
Obligations of foreign governments |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  |  | (4) | 0
(Increase) in allowance for credit losses |  |  | 0 | (6)
Reduction in credit losses due to AFS securities sold during the year |  |  |  | 1
Gains from recoveries of amounts previously written off |  |  | 2 | 1
Ending balance | $ (2) | $ (4) | $ (2) | $ (4)

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- Definition Amount of increase (decrease) in allowance for credit loss of 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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 9 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount excluding accrued interest, 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 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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- Definition Amount, excluding accrued interest, of credit loss expense on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) with no credit loss 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 https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 + Details
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- Definition Amount, excluding accrued interest, of increase in 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) from recovery. + 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 (h) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 + Details
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- Definition Amount, excluding accrued interest, of decrease in 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) from 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 (d) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 + Details
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