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6. Property and Casualty Insurance Activity (Details 1) - USD ($) | 9 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018
Insurance [Abstract] |  |
Balance at beginning of period | $ 56,197,106 | $ 48,799,622
Less reinsurance recoverables | (15,671,247) | (16,748,908)
Net balance, beginning of period | 40,525,859 | 32,050,714
Incurred related to: |  |
Current year | 60,401,821 | 41,611,658
Prior years | 11,186,029 | 127,465
Total incurred | 71,587,850 | 41,739,123
Paid related to: |  |
Current year | 31,515,656 | 23,404,909
Prior years | 18,600,946 | 12,160,419
Total paid | 50,116,602 | 35,565,328
Net balance at end of period | 61,997,107 | 38,224,509
Add reinsurance recoverables | 15,412,316 | 15,718,448
Balance at end of period | $ 77,409,423 | $ 53,942,957

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

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

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

X
- Definition Custom Element. + References No definition available. + Details
Name: | KINS_IncurredRelatedTo
Namespace Prefix: | KINS_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

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

X
- Definition Custom Element. + References No definition available. + Details
Name: | KINS_PaidRelatedTo
Namespace Prefix: | KINS_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

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

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

X
- Definition Custom Element. + References No definition available. + Details
Name: | KINS_TotalIncurredPropertyAndCasultyInsuranceActivity
Namespace Prefix: | KINS_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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 -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseInPropertyAndCasualtyInsuranceLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InsuranceAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration