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v3.22.1

Property and Casualty Insurance Activity (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Premiums Written |  |
Direct | $ 42,983,897 | $ 38,129,117
Assumed | 0 | 0
Ceded | (18,065,709) | (7,329,507)
Net | 24,918,188 | 30,799,610
Changes In Unearned Premiums |  |
Direct | 2,392,727 | 3,789,478
Assumed | 0 | 0
Ceded | (637,535) | 130
Net | 1,755,192 | 3,789,608
Premiums Earned |  |
Direct | 45,376,624 | 41,918,595
Assumed | 0 | 0
Ceded | (18,703,244) | (7,329,377)
Net | $ 26,673,380 | $ 34,589,218

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

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

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- References No definition available. + Details
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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_RelatedPartyTransactionAxis=king_PremiumsWrittenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Period Type: |

X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |