XML 12 R1.htm IDEA: XBRL DOCUMENT v3.21.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2020
Mar. 17, 2021
Jun. 30, 2020
Cover [Abstract]      
Entity Registrant Name KINGSTONE COMPANIES, INC.    
Entity Central Index Key 0000033992    
Document Type 10-K    
Amendment Flag false    
Entity Voluntary Filers No    
Current Fiscal Year End Date --12-31    
Entity Well Known Seasoned Issuer No    
Entity Small Business true    
Entity Shell Company false    
Entity Emerging Growth Company false    
Entity Current Reporting Status Yes    
Document Period End Date Dec. 31, 2020    
Entity Filer Category Non-accelerated Filer    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2020    
Entity Common Stock Shares Outstanding     10,701,407
Entity Public Float   $ 43,436,197  
Document Annual Report true    
Document Transition Report false    
Entity Interactive Data Current Yes    
Entity File Number 0-1665    
Entity Incorporation State Country Code DE    
Entity Tax Identification Number 36-2476480    
Entity Address Address Line 1 15 Joys Lane    
Entity Address City Or Town Kingston    
Entity Address State Or Province NY    
Entity Address Postal Zip Code 12401    
City Area Code 845    
Local Phone Number 802-7900    
Security 12b Title 0.01    
Trading Symbol KINS    
Security Exchange Name NASDAQ