XML 57 R40.htm IDEA: XBRL DOCUMENT
v3.21.2

Investments - AFS Allowance for Credit Losses (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] |  |
Expected credit loss on available-for-sale debt securities at beginning of period | $ 186 | $ 0
Increase (decrease) | 104 | (605)
Expected credit loss on available-for-sale debt securities at end of period | 290 | 186
Corporate Bonds |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] |  |
Expected credit loss on available-for-sale debt securities at beginning of period | 148 | 0
Increase (decrease) | 88 | (517)
Expected credit loss on available-for-sale debt securities at end of period | 236 | 148
Municipal Bonds |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] |  |
Expected credit loss on available-for-sale debt securities at beginning of period | 0 | 0
Increase (decrease) | 1 | 0
Expected credit loss on available-for-sale debt securities at end of period | 1 | 0
Redeemable preferred stock |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] |  |
Expected credit loss on available-for-sale debt securities at beginning of period | 38 | 0
Increase (decrease) | 15 | (88)
Expected credit loss on available-for-sale debt securities at end of period | $ 53 | 38
Cumulative effect adjustment as of January 1, 2020 |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] |  |
Expected credit loss on available-for-sale debt securities at beginning of period |  | 791
Cumulative effect adjustment as of January 1, 2020 | Corporate Bonds |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] |  |
Expected credit loss on available-for-sale debt securities at beginning of period |  | 665
Cumulative effect adjustment as of January 1, 2020 | Municipal Bonds |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] |  |
Expected credit loss on available-for-sale debt securities at beginning of period |  | 0
Cumulative effect adjustment as of January 1, 2020 | Redeemable preferred stock |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward] |  |
Expected credit loss on available-for-sale debt securities at beginning of period |  | $ 126

X
- 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 http://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 http://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 http://asc.fasb.org/extlink&oid=123581744&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 http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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 http://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateBondSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_RedeemablePreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CumulativeEffectPeriodOfAdoptionAxis=srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |