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Property and Casualty Insurance Activity - Schedule of Earned Premiums (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Change in unearned premiums |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Direct | $ (12,540,101) | $ (1,246,657) | $ (14,353,242) | $ 4,331,226
Assumed | 0 | 0 | 0 | 0
Ceded | 25,402,104 | 25,509,675 | 6,818,683 | 10,097,174
Net | 12,862,003 | 24,263,018 | (7,534,559) | 14,428,400
Premiums earned |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Direct | 54,086,563 | 50,745,589 | 155,093,361 | 151,567,862
Assumed | 0 | 0 | 0 | 0
Ceded | (20,679,369) | (22,807,271) | (62,562,653) | (65,866,395)
Net | 33,407,194 | 27,938,318 | 92,530,708 | 85,701,467
Premiums written |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |
Direct | 66,626,664 | 51,992,246 | 169,446,603 | 147,236,636
Assumed | 0 | 0 | 0 | 0
Ceded | (46,081,473) | (48,316,946) | (69,381,336) | (75,963,569)
Net | $ 20,545,191 | $ 3,675,300 | $ 100,065,267 | $ 71,273,067

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- Definition Assumed + References No definition available. + Details
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Namespace Prefix: | king_
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Balance Type: | debit
Period Type: | duration

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

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- Definition Net + References No definition available. + Details
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Balance Type: | debit
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- 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
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- Details
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- Details
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- Details
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