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2. Accounting Policies and Basis of Presentation (Details 1)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Total premiums earned subject to concentration 88.60%KINS_TotalPremiumsEarnedSubjectToConcentrationPercentage1 86.00%KINS_TotalPremiumsEarnedSubjectToConcentrationPercentage1
Premiums earned not subject to concentration 11.40%KINS_PremiumsEarnedNotSubjectToConcentrationPercentage1 14.00%KINS_PremiumsEarnedNotSubjectToConcentrationPercentage1
Total premiums earned 100.00%KINS_TotalPremiumsEarnedPercentage1 100.00%KINS_TotalPremiumsEarnedPercentage1
Personal Lines [Member]    
Total premiums earned subject to concentration 73.30%KINS_TotalPremiumsEarnedSubjectToConcentrationPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_PropertyAndCasualtyPersonalInsuranceProductLineMember		 70.00%KINS_TotalPremiumsEarnedSubjectToConcentrationPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_PropertyAndCasualtyPersonalInsuranceProductLineMember
Commercial Lines [Member]    
Total premiums earned subject to concentration 15.30%KINS_TotalPremiumsEarnedSubjectToConcentrationPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_PropertyAndCasualtyCommercialInsuranceProductLineMember		 16.00%KINS_TotalPremiumsEarnedSubjectToConcentrationPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_PropertyAndCasualtyCommercialInsuranceProductLineMember