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v3.23.1

Property and Casualty Insurance Activity (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Premiums earned [Member] |  |
Assumed | $ 0 | $ 0
Ceeded | (77,137,136) | (30,033,125)
Net | 114,384,531 | 143,881,719
Direct | 191,521,667 | 173,914,844
Change in unearned premiums [Member] |  |
Assumed | 0 | 0
Ceeded | 2,057,880 | 22,876,569
Net | (7,675,290) | 15,126,235
Direct | (9,733,170) | (7,750,334)
Premiums written Member |  |
Assumed | 0 | 0
Ceeded | (79,195,016) | (52,909,694)
Net | 122,059,821 | 128,755,484
Direct | $ 201,254,837 | $ 181,665,178

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

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

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

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

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

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=king_ChangeinunearnedpremiumsMember
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: |