XML 89 R59.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Investments (Available-For-Sale Securities Disclosure) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items] |  |
Allowance for credit losses, Period beginning balance | $ (3,969) | $ 0
Accrued investment income | 48,247 | 45,004
Current provision for securities without prior allowance | 8,135 | 5,042
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | (1,284) | 0
Reduction for securities sold | (926) | (974)
Reduction for securities identified as intent (or requirement) to sell during the period | (170) | (99)
Debt Securities, Available-for-sale, Fair Value | 6,709,976 | 6,455,928
Allowance for credit losses, ending balance at December 31, 2020 | (9,724) | (3,969)
Fixed income securities, Available-For-Sale, Amortized Cost | 6,490,753 | 6,073,517
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 246,301 | 397,922
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 17,354 | 11,542
Available-for-sale Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Accrued investment income | 46,300 | 43,800
U.S. Government and Government Agencies [Member] | Available-for-sale Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Allowance for credit losses, Period beginning balance | 0 |
Debt Securities, Available-for-sale, Fair Value | 130,458 | 116,140
Allowance for credit losses, ending balance at December 31, 2020 | 0 | 0
Fixed income securities, Available-For-Sale, Amortized Cost | 127,974 | 110,038
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 3,629 | 6,239
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 1,145 | 137
Foreign Government [Member] | Available-for-sale Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Allowance for credit losses, Period beginning balance | (1) | 0
Current provision for securities without prior allowance | 46 | 19
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | (1) | 0
Reduction for securities sold | 0 | (18)
Reduction for securities identified as intent (or requirement) to sell during the period | 0 | 0
Debt Securities, Available-for-sale, Fair Value | 15,860 | 18,366
Allowance for credit losses, ending balance at December 31, 2020 | (46) | (1)
Fixed income securities, Available-For-Sale, Amortized Cost | 15,420 | 16,801
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 609 | 1,569
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 123 | 3
Obligations of States and Political Subdivisions [Member] | Available-for-sale Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Allowance for credit losses, Period beginning balance | (4) | 0
Current provision for securities without prior allowance | 122 | 4
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | 11 | 0
Reduction for securities sold | 0 | 0
Reduction for securities identified as intent (or requirement) to sell during the period | 0 | 0
Debt Securities, Available-for-sale, Fair Value | 1,189,308 | 1,247,137
Allowance for credit losses, ending balance at December 31, 2020 | (137) | (4)
Fixed income securities, Available-For-Sale, Amortized Cost | 1,121,422 | 1,159,588
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 68,258 | 87,564
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 235 | 11
Corporate Securities [Member] | Available-for-sale Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Allowance for credit losses, Period beginning balance | (2,782) | 0
Current provision for securities without prior allowance | 5,785 | 3,645
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | (992) | 0
Reduction for securities sold | (723) | (781)
Reduction for securities identified as intent (or requirement) to sell during the period | (170) | (82)
Debt Securities, Available-for-sale, Fair Value | 2,573,603 | 2,328,052
Allowance for credit losses, ending balance at December 31, 2020 | (6,682) | (2,782)
Fixed income securities, Available-For-Sale, Amortized Cost | 2,478,348 | 2,152,203
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 106,890 | 180,971
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 4,953 | 2,340
Collateralized Loan Obligations and Other Asset-Backed Securities [Member] | Available-for-sale Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Allowance for credit losses, Period beginning balance | (592) | 0
Current provision for securities without prior allowance | 579 | 722
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | (211) | 0
Reduction for securities sold | (21) | (113)
Reduction for securities identified as intent (or requirement) to sell during the period | 0 | (17)
Debt Securities, Available-for-sale, Fair Value | 1,350,814 | 1,026,551
Allowance for credit losses, ending balance at December 31, 2020 | (939) | (592)
Fixed income securities, Available-For-Sale, Amortized Cost | 1,343,687 | 1,014,820
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 14,350 | 20,166
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 6,284 | 7,843
Residential Mortgage Backed Securities [Member] | Available-for-sale Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Allowance for credit losses, Period beginning balance | (561) | 0
Current provision for securities without prior allowance | 1,593 | 623
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | (63) | 0
Reduction for securities sold | (182) | (62)
Reduction for securities identified as intent (or requirement) to sell during the period | 0 | 0
Debt Securities, Available-for-sale, Fair Value | 776,252 | 1,051,788
Allowance for credit losses, ending balance at December 31, 2020 | (1,909) | (561)
Fixed income securities, Available-For-Sale, Amortized Cost | 756,280 | 999,485
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 24,813 | 53,065
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 2,932 | 201
Commercial Mortgage Backed Securities [Member] | Available-for-sale Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Allowance for credit losses, Period beginning balance | (29) | 0
Current provision for securities without prior allowance | 10 | 29
Increase or (Decrease) on securities with prior allowance, excluding intent (or Requirements) to sell securities | (28) | 0
Reduction for securities sold | 0 | 0
Reduction for securities identified as intent (or requirement) to sell during the period | 0 | 0
Debt Securities, Available-for-sale, Fair Value | 673,681 | 667,894
Allowance for credit losses, ending balance at December 31, 2020 | (11) | (29)
Fixed income securities, Available-For-Sale, Amortized Cost | 647,622 | 620,582
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 27,752 | 48,348
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | $ 1,682 | $ 1,007

X
- Definition Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(4)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_AccruedInvestmentIncomeReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost 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/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 Reference 2: 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_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount 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/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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 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=124269663&loc=SL82922900-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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

X
- Definition Amount 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 intent to sell or more likely than not will be required to sell before recovery of amortized cost basis. + 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 (e) -URI http://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossSellBeforeRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_AvailableforsaleSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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

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