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6. Property and Casualty Insurance Activity (Details 6) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Insurance [Abstract] |  |
Provisional ceding commissions earned | $ 3,720,360 | $ 1,317,751
Contingent ceding commissions earned | 110,739 | (40,068)
Total commissions earned | $ 3,831,099 | $ 1,277,683

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

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

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- Definition The expense incurred by an insurance company to persons or entities for generating or placing insurance or investment contracts with the company, usually determined as a percentage of policy or contract premiums. Excludes advances or draws to be applied against commissions earned. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.7(a)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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Namespace Prefix: | us-gaap_
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