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Property and Casualty Insurance Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Change in unearned premiums [Member]
Assumed	$ 0	$ 0
Ceeded	18,902,507	2,057,880
Net	20,773,746	(7,675,290)
Direct	1,871,239	(9,733,170)
Premiums earned [Member]
Assumed	0	0
Ceeded	(87,661,478)	(77,137,136)
Net	114,384,263	114,384,531
Direct	202,045,741	191,521,667
Premiums written Member
Assumed	0	0
Ceeded	(106,563,985)	(79,195,016)
Net	93,610,517	122,059,821
Direct	$ 200,174,502	$ 201,254,837

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- 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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- 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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- References

No definition available.

+ Details

Name:	kins_DirectPropertyAndCasultyInsuranceActivity
Namespace Prefix:	kins_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- 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_PropertyPlantAndEquipmentByTypeAxis=kins_ChangeinunearnedpremiumsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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- 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: