XML 65 R53.htm IDEA: XBRL DOCUMENT
v3.25.1

Property and Casualty Insurance Activity - Cumulative Paid Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance (Details) $ in Thousands | Mar. 31, 2025 USD ($)
--- | ---
Liability for Claims and Claims Adjustment Expense [Line Items] |
Total | $ 500,783
Net liability for unpaid loss and allocated loss adjustment expenses for the accident years presented | 93,725
All outstanding liabilities before 2016, net of reinsurance | 1,683
Liabilities for loss and allocated loss adjustment expenses, net of reinsurance | 95,408
2016 |
Liability for Claims and Claims Adjustment Expense [Line Items] |
2016 | 15,364
2017 |
Liability for Claims and Claims Adjustment Expense [Line Items] |
2016 | 19,001
2017 | 16,704
2018 |
Liability for Claims and Claims Adjustment Expense [Line Items] |
2016 | 21,106
2017 | 24,820
2018 | 32,383
2019 |
Liability for Claims and Claims Adjustment Expense [Line Items] |
2016 | 23,974
2017 | 28,693
2018 | 44,516
2019 | 40,933
2020 |
Liability for Claims and Claims Adjustment Expense [Line Items] |
2016 | 25,234
2017 | 31,393
2018 | 50,553
2019 | 54,897
2020 | 39,045
2021 |
Liability for Claims and Claims Adjustment Expense [Line Items] |
2016 | 25,750
2017 | 32,529
2018 | 52,025
2019 | 58,055
2020 | 50,719
2021 | 56,282
2022 |
Liability for Claims and Claims Adjustment Expense [Line Items] |
2016 | 26,382
2017 | 33,522
2018 | 54,424
2019 | 60,374
2020 | 53,432
2021 | 77,756
2022 | 45,856
2023 |
Liability for Claims and Claims Adjustment Expense [Line Items] |
2016 | 26,854
2017 | 34,683
2018 | 56,199
2019 | 63,932
2020 | 56,523
2021 | 82,317
2022 | 65,732
2023 | 46,280
2024 |
Liability for Claims and Claims Adjustment Expense [Line Items] |
2016 | 26,808
2017 | 35,046
2018 | 57,185
2019 | 66,109
2020 | 59,220
2021 | 85,314
2022 | 68,170
2023 | 56,952
2024 | 29,013
2025 |
Liability for Claims and Claims Adjustment Expense [Line Items] |
2016 | 26,816
2017 | 35,229
2018 | 57,492
2019 | 67,507
2020 | 59,544
2021 | 86,548
2022 | 69,119
2023 | 57,894
2024 | 36,168
2025 | $ 4,466

X
- Definition All outstanding liabilities before 2016, net of reinsurance + References No definition available. + Details
Name: | king_AllOutstandingLiabilitiesBefore2016NetOfReinsurance
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Short Duration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense For 2024 + References No definition available. + Details
Name: | king_ShortDurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseFor2024
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Short-Duration Insurance Contracts, Cumulative Paid Claims and Allocated Claim Adjustment Expense For 2025 + References No definition available. + Details
Name: | king_ShortDurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseFor2025
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition [2016] + References No definition available. + Details
Name: | king_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpense2016
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition [2017] + References No definition available. + Details
Name: | king_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpense2017
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition [2018] + References No definition available. + Details
Name: | king_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpense2018
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition [2019] + References No definition available. + Details
Name: | king_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpense2019
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition [2021] + References No definition available. + Details
Name: | king_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpense2021
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition [2020] + References No definition available. + Details
Name: | king_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseFor2020
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition [2022] + References No definition available. + Details
Name: | king_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseFor2022
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition [2023] + References No definition available. + Details
Name: | king_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseFor2023
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_LiabilityForClaimsAndClaimsAdjustmentExpenseLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Liability as of the balance sheet date for amounts representing estimated cost of settling unpaid claims under the terms of the underlying insurance policies, less estimated reinsurance recoveries on such claims. This includes an estimate for claims which have been incurred but not reported. Claim adjustment expenses represent the costs estimated to be incurred in the settlement of unpaid claims. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(13)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (cc) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-3 + Details
Name: | us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, after reinsurance, of paid claims and allocated claim adjustment expense used in claims development for short-duration insurance contracts. Excludes unallocated claim adjustment expense. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4B + Details
Name: | us-gaap_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Undiscounted amount, after reinsurance, of the liability for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts for accident years not separately presented in claim development information. Excludes unallocated claim adjustment expense. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4B + Details
Name: | us-gaap_ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetNotSeparatelyPresented
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_PlanNameAxis=king_TwoThousandSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=king_TwoThousandSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=king_TwoThousandEighteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=king_TwoThousandNineteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=king_TwoThousandTwentyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=king_TwoThousandTwentyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=king_TwoThousandTwentyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=king_TwoThousandTwentyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=king_TwoThousandTwentyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=king_TwoThousandTwentyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |