2. Accounting Policies	3 Months Ended
Mar. 31, 2020
Accounting Policies [Abstract]
2. Accounting Policies	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates and assumptions, which include the reserves for losses and loss adjustment expenses, and are subject to estimation errors due to the inherent uncertainty in projecting ultimate claim amounts that will be reported and settled over a period of many years. In addition, estimates and assumptions associated with receivables under reinsurance contracts related to contingent ceding commission revenue require judgments by management. On an ongoing basis, management reevaluates its assumptions and the methods for calculating these estimates. Actual results may differ significantly from the estimates and assumptions used in preparing the consolidated financial statements. Principles of Consolidation The accompanying condensed consolidated financial statements consist of Kingstone and its following wholly owned subsidiaries: (1) KICO and its wholly owned subsidiaries, CMIC Properties, Inc. (“Properties”) and 15 Joys Lane, LLC (“15 Joys Lane”), which together own the land and building from which KICO operates, and (2) Cosi. All significant intercompany account balances and transactions have been eliminated in consolidation. Accounting Changes The Company has determined that it was not subject to any new accounting pronouncements that became effective during the three months ended March 31, 2020. Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2016-13 - Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). The revised accounting guidance requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts and requires enhanced disclosures related to the significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, ASU 2016-13 amends the accounting for credit losses of available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 will be effective for the Company on January 1, 2023. The Company is currently evaluating the effect the updated guidance will have on its condensed consolidated financial statements. In December 2019, the FASB issued ASU 2019-12, Income Taxes - Simplifying the Accounting for Income Taxes (“ASU 2019-12”). Among other items, the amendments in ASU 2019-12 simplify the accounting treatment of tax law changes and year-to-date losses in interim periods. An entity generally recognizes the effects of a change in tax law in the period of enactment; however, there is an exception for tax laws with delayed effective dates. Under current guidance, an entity may not adjust its annual effective tax rate for a tax law change until the period in which the law is effective. This exception was removed under ASU 2019-12, thereby providing that all effects of a tax law change are recognized in the period of enactment, including adjustment of the estimated annual effective tax rate. Regarding year-to-date losses in interim periods, an entity is required to estimate its annual effective tax rate for the full fiscal year at the end of each interim period and use that rate to calculate its income taxes on a year-to-date basis. However, current guidance provides an exception that when a loss in an interim period exceeds the anticipated loss for the year, the income tax benefit is limited to the amount that would be recognized if the year-to-date loss were the anticipated loss for the full year. ASU 2019-12 removes this exception and provides that, in this situation, an entity would compute its income tax benefit at each interim period based on its estimated annual effective tax rate. ASU 2019-12 is effective for fiscal years beginning after December 15, 2020, including interim periods within those annual periods. Early adoption is permitted. The Company is currently evaluating the impact of this guidance on its financial condition and results of operations. The Company has determined that all other recently issued accounting pronouncements will not have a material impact on its consolidated financial position, results of operations and cash flows, or do not apply to its operations.

2. Accounting Policies

3 Months Ended

Mar. 31, 2020

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates and assumptions, which include the reserves for losses and loss adjustment expenses, and are subject to estimation errors due to the inherent uncertainty in projecting ultimate claim amounts that will be reported and settled over a period of many years. In addition, estimates and assumptions associated with receivables under reinsurance contracts related to contingent ceding commission revenue require judgments by management. On an ongoing basis, management reevaluates its assumptions and the methods for calculating these estimates. Actual results may differ significantly from the estimates and assumptions used in preparing the consolidated financial statements.

Principles of Consolidation

The accompanying condensed consolidated financial statements consist of Kingstone and its following wholly owned subsidiaries: (1) KICO and its wholly owned subsidiaries, CMIC Properties, Inc. (“Properties”) and 15 Joys Lane, LLC (“15 Joys Lane”), which together own the land and building from which KICO operates, and (2) Cosi. All significant intercompany account balances and transactions have been eliminated in consolidation.

Accounting Changes

The Company has determined that it was not subject to any new accounting pronouncements that became effective during the three months ended March 31, 2020.

Accounting Pronouncements

In June 2016, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2016-13 - Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). The revised accounting guidance requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts and requires enhanced disclosures related to the significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, ASU 2016-13 amends the accounting for credit losses of available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 will be effective for the Company on January 1, 2023. The Company is currently evaluating the effect the updated guidance will have on its condensed consolidated financial statements.

In December 2019, the FASB issued ASU 2019-12, Income Taxes - Simplifying the Accounting for Income Taxes (“ASU 2019-12”). Among other items, the amendments in ASU 2019-12 simplify the accounting treatment of tax law changes and year-to-date losses in interim periods. An entity generally recognizes the effects of a change in tax law in the period of enactment; however, there is an exception for tax laws with delayed effective dates. Under current guidance, an entity may not adjust its annual effective tax rate for a tax law change until the period in which the law is effective. This exception was removed under ASU 2019-12, thereby providing that all effects of a tax law change are recognized in the period of enactment, including adjustment of the estimated annual effective tax rate. Regarding year-to-date losses in interim periods, an entity is required to estimate its annual effective tax rate for the full fiscal year at the end of each interim period and use that rate to calculate its income taxes on a year-to-date basis. However, current guidance provides an exception that when a loss in an interim period exceeds the anticipated loss for the year, the income tax benefit is limited to the amount that would be recognized if the year-to-date loss were the anticipated loss for the full year. ASU 2019-12 removes this exception and provides that, in this situation, an entity would compute its income tax benefit at each interim period based on its estimated annual effective tax rate. ASU 2019-12 is effective for fiscal years beginning after December 15, 2020, including interim periods within those annual periods. Early adoption is permitted. The Company is currently evaluating the impact of this guidance on its financial condition and results of operations.

The Company has determined that all other recently issued accounting pronouncements will not have a material impact on its consolidated financial position, results of operations and cash flows, or do not apply to its operations.