XML 114 R85.htm IDEA: XBRL DOCUMENT
v3.25.1

Property and Casualty Insurance Activity - Premiums Written, Ceded and Earned (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Change in unearned premiums |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |
Direct | $ (29,080,195) | $ 1,871,239
Assumed | 0 | 0
Ceded | 3,348,250 | 18,902,507
Net | (25,731,945) | 20,773,746
Premiums earned |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |
Direct | 212,899,742 | 202,045,741
Assumed | 0 | 0
Ceded | (84,401,822) | (87,661,478)
Net | 128,497,920 | 114,384,263
Premiums written |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |
Direct | 241,979,937 | 200,174,502
Assumed | 0 | 0
Ceded | (87,750,072) | (106,563,985)
Net | $ 154,229,865 | $ 93,610,517

X
- Definition Assumed + References No definition available. + Details
Name: | kins_AssumedPropertyAndCasultyInsuranceActivity
Namespace Prefix: | kins_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Ceeded + References No definition available. + Details
Name: | kins_CededPropertyAndCasultyInsuranceActivity
Namespace Prefix: | kins_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Direct + References No definition available. + Details
Name: | kins_DirectPropertyAndCasultyInsuranceActivity
Namespace Prefix: | kins_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition [Net] + References No definition available. + Details
Name: | kins_NetPropertyAndCasultyInsuranceActivity
Namespace Prefix: | kins_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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
Name: | us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpenseLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

X
- Details
Name: | srt_TitleOfIndividualAxis=kins_PremiumsWrittenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |