XML 60 R50.htm IDEA: XBRL DOCUMENT
v3.25.3

Property and Casualty Insurance Activity - Loss and Loss Adjustment Expense Reserves (Details) - USD ($) | 9 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Unpaid Loss and LAE Reserves [Roll Forward] |  |
Balance at beginning of period | $ 126,210,428 | $ 121,817,862
Less reinsurance recoverables | (32,322,637) | (33,288,650)
Net balance, beginning of period | 93,887,791 | 88,529,212
Incurred related to: |  |
Current year | 67,156,741 | 64,414,543
Prior years | (822,177) | (1,779,827)
Total incurred | 66,334,564 | 62,634,716
Paid related to: |  |
Current year | 29,492,987 | 32,956,899
Prior years | 24,351,681 | 24,319,238
Total paid | 53,844,668 | 57,276,137
Net balance at end of period | 106,377,687 | 93,887,791
Add reinsurance recoverables | 34,816,559 | 32,322,637
Balance at end of period | $ 141,194,246 | $ 126,210,428

X
- Definition Add reinsurance recoverables + References No definition available. + Details
Name: | king_AddReinsuranceRecoverables
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Balance at end of period + References No definition available. + Details
Name: | king_BalanceAtEndOfPeriod
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Incurred related to: + References No definition available. + Details
Name: | king_IncurredRelatedToAbstract
Namespace Prefix: | king_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Less reinsurance recoverables + References No definition available. + Details
Name: | king_LessReinsuranceRecoverables
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net balance at end of period + References No definition available. + Details
Name: | king_NetBalanceAtEndOfPeriod
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net balance, beginning of period + References No definition available. + Details
Name: | king_NetBalanceBeginningOfPeriod
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Paid related to: + References No definition available. + Details
Name: | king_PaidRelatedToAbstract
Namespace Prefix: | king_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition [Current year] + References No definition available. + Details
Name: | king_PaidRelatedToCurrentYear
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition [Prior years] + References No definition available. + Details
Name: | king_PaidRelatedToPriorYears
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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

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

X
- Definition Unpaid Loss and LAE Reserves + References No definition available. + Details
Name: | king_UnpaidLossAndLAEReservesRollForward
Namespace Prefix: | king_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase (decrease) in property and casualty insurance liabilities balances during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInPropertyAndCasualtyInsuranceLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration