1. Nature of Business	12 Months Ended
Dec. 31, 2012
Accounting Policies [Abstract]
1. Nature of Business	Kingstone Companies, Inc. (referred to herein as "Kingstone" or the “Company”), through its subsidiary Kingstone Insurance Company (“KICO”), underwrites property and casualty insurance to small businesses and individuals exclusively through independent agents and brokers. KICO is a licensed insurance company in the State of New York. In February 2011, KICO’s application for an insurance license to write insurance in the Commonwealth of Pennsylvania was approved; however, KICO has only nominally commenced writing business in Pennsylvania. Kingstone, through its subsidiary, Payments, Inc., a licensed premium finance company in the State of New York, receives fees for placing contracts with a third party licensed premium finance company.

The entire disclosure for the business description and basis of presentation concepts. Business description describes the nature and type of organization including but not limited to organizational structure as may be applicable to holding companies, parent and subsidiary relationships, business divisions, business units, business segments, affiliates and information about significant ownership of the reporting entity. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).

No definition available.

Name:	us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration