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v3.21.2

Property and Casualty Insurance Activity (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Premiums Written |  |  |  |
Direct | $ 48,865,169 | $ 45,742,165 | $ 131,609,930 | $ 125,089,571
Assumed | 0 | 0 | 0 | 0
Ceded | (7,223,526) | (15,747,215) | (21,854,398) | (43,813,468)
Net | 41,641,643 | 29,994,950 | 109,755,532 | 81,276,103
Changes In Unearned Premiums |  |  |  |
Direct | (4,848,145) | (3,161,356) | (2,911,439) | 2,215,602
Assumed | 0 | 0 | 0 | 0
Ceded | 9,753 | 687,487 | (15,198) | (2,392,318)
Net | (4,838,392) | (2,473,869) | (2,926,637) | (176,716)
Premiums Earned |  |  |  |
Direct | 44,017,024 | 42,580,809 | 128,698,491 | 127,305,173
Assumed | 0 | 0 | 0 | 0
Ceded | (7,213,773) | (15,059,728) | (21,869,596) | (46,205,786)
Net | $ 36,803,251 | $ 27,521,081 | $ 106,828,895 | $ 81,099,387

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

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

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

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

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- Details
Name: | us-gaap_ReinsurancePolicyTypeAxis=kins_PremiumsWrittenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReinsurancePolicyTypeAxis=kins_ChangesInUnearnedPremiumsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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