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v3.23.3

Property and Casualty Insurance Activity (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Change in unearned premiums [Member] |  |  |  |
Assumed | $ 0 | $ 0 | $ 0 | $ 0
Ceeded | 25,509,675 | 23,900,665 | 25,143,466 | 23,925,498
Net | 24,263,018 | 18,264,244 | 29,474,692 | 17,895,724
Direct | (1,246,657) | (5,636,421) | 4,331,226 | (6,029,774)
Premiums earned [Member] |  |  |  |
Assumed | 0 | 0 | 0 | 0
Ceeded | (22,807,271) | (19,594,154) | (65,866,395) | (57,387,713)
Net | 27,938,318 | 29,360,976 | 85,701,467 | 83,936,424
Direct | 50,745,589 | 48,955,130 | 151,567,862 | 141,324,137
Premiums written Member |  |  |  |
Assumed | 0 | 0 | 0 | 0
Ceeded | (48,316,946) | (43,494,819) | (91,009,861) | (81,313,211)
Net | 3,675,300 | 11,096,732 | 56,226,775 | 66,040,700
Direct | $ 51,992,246 | $ 54,591,551 | $ 147,236,636 | $ 147,353,911

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- References No definition available. + Details
Name: | king_AssumedPropertyAndCasultyInsuranceActivity
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | king_CededPropertyAndCasultyInsuranceActivity
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | king_DirectPropertyAndCasultyInsuranceActivity
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | king_NetPropertyAndCasultyInsuranceActivity
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=king_ChangeinunearnedpremiumsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=king_PremiumsearnedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=king_PremiumswrittenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |