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v3.23.2

Property and Casualty Insurance Activity (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Change in unearned premiums [Member] |  |  |  |
Assumed | $ 0 | $ 0 | $ 0 | $ 0
Ceeded | (2,319,531) | 662,368 | (366,209) | 24,833
Net | 925,468 | (2,123,712) | 5,211,674 | (368,520)
Direct | 3,244,999 | (2,786,080) | 5,577,883 | (393,353)
Premiums earned [Member] |  |  |  |
Assumed | 0 | 0 | 0 | 0
Ceeded | (21,383,747) | (19,090,315) | (43,059,124) | (37,793,559)
Net | 29,508,196 | 27,902,068 | 57,763,149 | 54,575,448
Direct | 50,891,943 | 46,992,383 | 100,822,273 | 92,369,007
Premiums written Member |  |  |  |
Assumed | 0 | 0 | 0 | 0
Ceeded | (19,064,216) | (19,752,683) | (42,692,915) | (37,818,392)
Net | 28,582,728 | 30,025,780 | 52,551,475 | 54,943,968
Direct | $ 47,646,944 | $ 49,778,463 | $ 95,244,390 | $ 92,762,360

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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: |

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- 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: |