XML 67 R57.htm IDEA: XBRL DOCUMENT
v3.24.3

Investments (Details) - Schedule of Gross Unrealized Losses on Fixed Income Securities - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Fixed income securities: |  |
Less than 12 months Fair Value | $ 43,898 | $ 32,452
Less than 12 months Unrealized Losses | (586) | (579)
Greater than 12 months Fair Value | 211,860 | 246,744
Greater than 12 months Unrealized Losses | (26,170) | (29,740)
Fair Value, Total | 255,758 | 279,196
Unrealized Losses, Total | (26,756) | (30,319)
Fixed income securities [Member] |  |
Fixed income securities: |  |
Fair Value, Total | 255,758 | 279,196
Unrealized Losses, Total | (26,756) | (30,319)
Fixed income securities [Member] | U.S. Government and agencies [Member] |  |
Fixed income securities: |  |
Less than 12 months Fair Value | 3,212 |
Less than 12 months Unrealized Losses | (28) |
Greater than 12 months Fair Value | 6,071 | 9,018
Greater than 12 months Unrealized Losses | (327) | (736)
Fair Value, Total | 9,283 | 9,018
Unrealized Losses, Total | (355) | (736)
Fixed income securities [Member] | Obligations of states and political subdivisions [Member] |  |
Fixed income securities: |  |
Less than 12 months Fair Value | 9,019 | 5,239
Less than 12 months Unrealized Losses | (112) | (359)
Greater than 12 months Fair Value | 36,207 | 36,194
Greater than 12 months Unrealized Losses | (4,785) | (4,357)
Fair Value, Total | 45,226 | 41,433
Unrealized Losses, Total | (4,897) | (4,716)
Fixed income securities [Member] | Corporate securities [Member] |  |
Fixed income securities: |  |
Less than 12 months Fair Value | 14,678 | 8,018
Less than 12 months Unrealized Losses | (240) | (93)
Greater than 12 months Fair Value | 91,589 | 110,117
Greater than 12 months Unrealized Losses | (8,740) | (10,763)
Fair Value, Total | 106,267 | 118,135
Unrealized Losses, Total | (8,980) | (10,856)
Fixed income securities [Member] | Residential mortgage-backed securities [Member] |  |
Fixed income securities: |  |
Less than 12 months Fair Value | 8,535 | 12,054
Less than 12 months Unrealized Losses | (121) | (104)
Greater than 12 months Fair Value | 30,354 | 33,341
Greater than 12 months Unrealized Losses | (4,940) | (5,275)
Fair Value, Total | 38,889 | 45,395
Unrealized Losses, Total | (5,061) | (5,379)
Fixed income securities [Member] | Commercial mortgage-backed securities [Member] |  |
Fixed income securities: |  |
Less than 12 months Fair Value | 1,928 | 2,678
Less than 12 months Unrealized Losses | (42) | (5)
Greater than 12 months Fair Value | 21,112 | 23,713
Greater than 12 months Unrealized Losses | (3,282) | (4,236)
Fair Value, Total | 23,040 | 26,391
Unrealized Losses, Total | (3,324) | (4,241)
Fixed income securities [Member] | Asset-backed securities [Member] |  |
Fixed income securities: |  |
Less than 12 months Fair Value | 6,526 | 4,463
Less than 12 months Unrealized Losses | (43) | (18)
Greater than 12 months Fair Value | 23,230 | 30,200
Greater than 12 months Unrealized Losses | (3,656) | (3,787)
Fair Value, Total | 29,756 | 34,663
Unrealized Losses, Total | (3,699) | (3,805)
Fixed income securities [Member] | Redeemable preferred stocks [Member] |  |
Fixed income securities: |  |
Less than 12 months Fair Value |  |
Less than 12 months Unrealized Losses |  |
Greater than 12 months Fair Value | 3,297 | 4,161
Greater than 12 months Unrealized Losses | (440) | (586)
Fair Value, Total | 3,297 | 4,161
Unrealized Losses, Total | $ (440) | $ (586)

X
- References No definition available. + Details
Name: | nodk_FixedIncomeSecuritiesAbstract3
Namespace Prefix: | nodk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479081/326-30-55-8 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-7 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-5 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-5 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
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), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479081/326-30-55-8 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-7 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-5 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-5 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
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), in unrealized loss position without allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479081/326-30-55-8 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-4 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-4 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

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

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

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

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

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