XML 69 R31.htm IDEA: XBRL DOCUMENT
v3.20.1

3. Investments (Details 1) - USD ($) | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Amortized cost | $ 152,675,779 | $ 162,202,355
Estimated fair value | 151,879,894 | 168,236,181
Less Than One Year |  |
Amortized cost | 12,900,401 | 11,986,401
Estimated fair value | 12,937,879 | 12,025,804
One To Five Years |  |
Amortized cost | 44,309,018 | 49,715,422
Estimated fair value | 44,695,085 | 51,000,025
Five To Ten Years |  |
Amortized cost | 65,324,015 | 69,850,104
Estimated fair value | 66,293,522 | 74,410,275
More Than 10 Years |  |
Amortized cost | 4,511,318 | 4,511,795
Estimated fair value | 4,114,335 | 4,568,847
Residential mortgage-backed securities [Member] |  |
Amortized cost | 25,631,027 | 26,138,633
Estimated fair value | $ 23,839,073 | $ 26,231,230

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

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

X
- Details
Name: | us-gaap_InvestmentTypeAxis=KINS_LessThanOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=KINS_OneToFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=KINS_FiveToTenYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=KINS_MoreThan10YearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_MortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |