Nature Of Operations And Basis Of Presentation	6 Months Ended
Jun. 30, 2011
Nature Of Operations And Basis Of Presentation [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	NATURE OF OPERATIONS AND BASIS OF PRESENTATION Nature of Business The terms “United Fire,” “we,” “us,” or “our” refer to United Fire & Casualty Company or United Fire & Casualty Company and its consolidated subsidiaries and its affiliate, as the context requires. We are engaged in the business of writing property and casualty insurance and life insurance and selling annuities through a network of independent agencies. We report our operations in two business segments: property and casualty insurance and life insurance. We are licensed as a property and casualty insurer in 43 states plus the District of Columbia and as a life insurer in 29 states. Basis of Presentation We maintain our records in conformity with the accounting practices prescribed or permitted by the insurance departments of the states in which we are domiciled. To the extent that certain of these practices differ from U.S. generally accepted accounting principles (“GAAP”), we have made adjustments to present the accompanying unaudited Consolidated Financial Statements in conformity with GAAP. Certain financial information that is included in our Annual Report on Form 10-K, including certain financial statement footnote disclosures, are not required by the rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial reporting and have been condensed or omitted. 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 financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The financial statement categories that are most dependent on management estimates and assumptions include: investments; deferred policy acquisition costs; goodwill and intangible assets; and future policy benefits and losses, claims and loss settlement expenses. In the preparation of the accompanying unaudited Consolidated Financial Statements, we have evaluated all material subsequent events or transactions that occurred after the balance sheet date through the date on which the financial statements were issued for potential recognition or disclosure therein. Certain prior year amounts have been reclassified to conform to the current year presentation. In the opinion of the management of United Fire, the accompanying unaudited Consolidated Financial Statements contain all adjustments (consisting of normal recurring adjustments) necessary to present fairly the financial position, results of operations and cash flows for the periods presented. All significant intercompany transactions have been eliminated in consolidation. The results reported for the interim periods are not necessarily indicative of the results of operations that may be expected for the year. The unaudited Consolidated Financial Statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2010. The review report of Ernst & Young LLP as of and for the three- and six-month periods ended June 30, 2011, accompanies the unaudited Consolidated Financial Statements included in Part I, Item 1 “Financial Statements.” Acquisition of Mercer Insurance Group On March 28, 2011, we acquired 100 percent of the outstanding common stock of Mercer Insurance Group for cash consideration of $191.5 million. Accordingly, the results of operations for Mercer Insurance Group have been included in the accompanying unaudited Consolidated Financial Statements from that date forward. After the acquisition, we market through over 1,200 independent property and casualty agencies. In addition, the acquisition allows us to diversify our exposure to weather and other catastrophe risks across our geographic markets. This transaction was accounted for under the purchase method of accounting using Mercer Insurance Group historical financial information and applying fair value estimates to the acquired assets, liabilities and commitments as of the acquisition date. For additional information related to this acquisition, see Note 10, “Business Combinations.” In connection with this acquisition, we incurred $5.5 million of expense in the first quarter of 2011 related to change in control payments made to the former executive officers of Mercer Insurance Group. Cash and Cash Equivalents For purposes of reporting cash flows, cash and cash equivalents include cash, money market accounts, and non-negotiable certificates of deposit with original maturities of three months or less. For the six-month periods ended June 30, 2011 and 2010, we made payments for income taxes of $0.6 million and $10.5 million, respectively. For the six-month period ended June 30, 2011, we received no tax refunds compared to tax refunds of $13.5 million for the same period of 2010, that were received due to the overpayment of prior year tax and operating loss carrybacks. We made no significant payments of interest for the six-month periods ended June 30, 2011 and 2010, other than for interest credited to policyholders’ accounts. Income Taxes Deferred tax assets and liabilities are established based on differences between the financial statement bases of assets and liabilities and the tax bases of those same assets and liabilities, using the currently enacted statutory tax rates. Deferred income tax expense is measured by the year-to-year change in the net deferred tax asset or liability, except for certain changes in deferred tax amounts that affect stockholders’ equity and do not impact federal income tax expense. We reported a federal income tax benefit of $12.0 million and a federal income tax expense of $9.1 million for the six-month periods ended June 30, 2011 and 2010, respectively. Our effective tax rate is different than the federal statutory rate of 35.0 percent due principally to the effect of tax-exempt municipal bond interest income and non-taxable dividend income. We have recognized no liability for unrecognized tax benefits at June 30, 2011 or December 31, 2010, or at any time during the six-month period ended June 30, 2011. In addition, we have not accrued for interest and penalties related to unrecognized tax benefits. However, if interest and penalties would need to be accrued related to unrecognized tax benefits, such amounts would be recognized as a component of federal income tax expense. We file a consolidated federal income tax return. We also file income tax returns in various state jurisdictions. We are no longer subject to federal or state income tax examination for years before 2006. There are ongoing examinations of income tax returns by the Internal Revenue Service of the 2008 tax year, by the State of Illinois of the 2007 and 2008 tax years and by the State of Florida of the 2008 through 2010 tax years. Recently Issued Accounting Standards Adopted Accounting Standards Fair Value Measurements In January 2010, the Financial Accounting Standards Board ("FASB") issued revised accounting guidance that clarifies and provides additional disclosure requirements related to recurring and non-recurring fair value measurements. The guidance requires separate disclosures for the amounts of significant transfers in and out of Level 1 and Level 2 fair value measurements, along with an explanation for the transfers. Additionally, a separate disclosure is required for purchases, sales, issuances and settlements on a gross basis for Level 3 fair value measurements. The guidance also provides additional clarification for both the level of disaggregation reported for each class of assets or liabilities and disclosures of inputs and valuation techniques used to measure fair value for both recurring and non-recurring fair value measurements for assets and liabilities categorized as Level 2 or Level 3. The new disclosures and clarifications of existing disclosures were effective for interim and annual reporting periods beginning after December 15, 2009, except for the disclosures about purchases, sales, issuances, and settlements in the roll forward of activity in Level 3 fair value measurements, which are effective for fiscal years beginning after December 15, 2010. Refer to Note 3 “Fair Value of Financial Instruments” for the information required to be disclosed upon our adoption of the guidance, effective January 1, 2011. Pending Adoption of Accounting Standards Policy Acquisition Costs In October 2010, the FASB issued updated accounting guidance to address the diversity in practice for the accounting for costs associated with acquiring or renewing insurance contracts. This guidance modifies the definition of acquisition costs to specify that a cost must be incremental and directly related to the successful acquisition of a new or renewal insurance contract in order to be deferred. Acquisition costs that are not eligible for deferral are to be charged to expense in the period incurred. If application of this guidance would result in the capitalization of acquisition costs that had not previously been capitalized by a reporting entity, the entity may elect not to capitalize those costs. The updated guidance is effective for interim and annual reporting periods beginning after December 15, 2011. We are currently evaluating the impact that our adoption of the guidance, effective January 1, 2012, will have on our Consolidated Financial Statements. Fair Value Measurements In May 2011, the FASB issued updated accounting guidance that changes the wording used to describe many of the requirements in GAAP for measuring fair value and for disclosing information about fair value measurements to ensure consistency between GAAP and International Financial Reporting Standards. The guidance also expands the disclosures for fair value measurements that are estimated using significant unobservable (Level 3) inputs. This new guidance is to be applied prospectively. We are currently evaluating the impact that our adoption of the guidance, effective January 1, 2013, will have on the information disclosed in our Consolidated Financial Statements. Comprehensive Income In June 2011, the FASB issued revised accounting guidance that eliminates the option to present the components of other comprehensive income as part of the statement of stockholders' equity. Instead, comprehensive income must be reported in either a single continuous statement of comprehensive income which contains two sections, net income and other comprehensive income, or in two separate but consecutive statements. The guidance will be effective for public companies during the interim and annual periods beginning after December 15, 2011 with early adoption permitted. This new guidance is to be applied retrospectively. We have not adopted this guidance and currently we are evaluating the impact that our adoption of this guidance will have on the presentation of our Consolidated Financial Statements.

NATURE OF OPERATIONS AND BASIS OF PRESENTATION

Nature of Business

The terms “United Fire,” “we,” “us,” or “our” refer to United Fire & Casualty Company or United Fire & Casualty Company and its consolidated subsidiaries and its affiliate, as the context requires. We are engaged in the business of writing property and casualty insurance and life insurance and selling annuities through a network of independent agencies. We report our operations in two business segments: property and casualty insurance and life insurance. We are licensed as a property and casualty insurer in 43 states plus the District of Columbia and as a life insurer in 29 states.

Basis of Presentation

We maintain our records in conformity with the accounting practices prescribed or permitted by the insurance departments of the states in which we are domiciled. To the extent that certain of these practices differ from U.S. generally accepted accounting principles (“GAAP”), we have made adjustments to present the accompanying unaudited Consolidated Financial Statements in conformity with GAAP. Certain financial information that is included in our Annual Report on Form 10-K, including certain financial statement footnote disclosures, are not required by the rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial reporting and have been condensed or omitted.

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 financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The financial statement categories that are most dependent on management estimates and assumptions include: investments; deferred policy acquisition costs; goodwill and intangible assets; and future policy benefits and losses, claims and loss settlement expenses.

In the preparation of the accompanying unaudited Consolidated Financial Statements, we have evaluated all material subsequent events or transactions that occurred after the balance sheet date through the date on which the financial statements were issued for potential recognition or disclosure therein.

Certain prior year amounts have been reclassified to conform to the current year presentation.

In the opinion of the management of United Fire, the accompanying unaudited Consolidated Financial Statements contain all adjustments (consisting of normal recurring adjustments) necessary to present fairly the financial position, results of operations and cash flows for the periods presented. All significant intercompany transactions have been eliminated in consolidation. The results reported for the interim periods are not necessarily indicative of the results of operations that may be expected for the year. The unaudited Consolidated Financial Statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2010. The review report of Ernst & Young LLP as of and for the three- and six-month periods ended June 30, 2011, accompanies the unaudited Consolidated Financial Statements included in Part I, Item 1 “Financial Statements.”

Acquisition of Mercer Insurance Group

On March 28, 2011, we acquired 100 percent of the outstanding common stock of Mercer Insurance Group for cash consideration of $191.5 million. Accordingly, the results of operations for Mercer Insurance Group have been included in the accompanying unaudited Consolidated Financial Statements from that date forward. After the acquisition, we market through over 1,200 independent property and casualty agencies. In addition, the acquisition allows us to diversify our exposure to weather and other catastrophe risks across our geographic markets.

This transaction was accounted for under the purchase method of accounting using Mercer Insurance Group historical financial information and applying fair value estimates to the acquired assets, liabilities and commitments as of the acquisition date. For additional information related to this acquisition, see Note 10, “Business Combinations.”

In connection with this acquisition, we incurred $5.5 million of expense in the first quarter of 2011 related to change in control payments made to the former executive officers of Mercer Insurance Group.

Cash and Cash Equivalents

For purposes of reporting cash flows, cash and cash equivalents include cash, money market accounts, and non-negotiable certificates of deposit with original maturities of three months or less.

For the six-month periods ended June 30, 2011 and 2010, we made payments for income taxes of $0.6 million and $10.5 million, respectively. For the six-month period ended June 30, 2011, we received no tax refunds compared to tax refunds of $13.5 million for the same period of 2010, that were received due to the overpayment of prior year tax and operating loss carrybacks.

We made no significant payments of interest for the six-month periods ended June 30, 2011 and 2010, other than for interest credited to policyholders’ accounts.

Income Taxes

Deferred tax assets and liabilities are established based on differences between the financial statement bases of assets and liabilities and the tax bases of those same assets and liabilities, using the currently enacted statutory tax rates. Deferred income tax expense is measured by the year-to-year change in the net deferred tax asset or liability, except for certain changes in deferred tax amounts that affect stockholders’ equity and do not impact federal income tax expense.

We reported a federal income tax benefit of $12.0 million and a federal income tax expense of $9.1 million for the six-month periods ended June 30, 2011 and 2010, respectively. Our effective tax rate is different than the federal statutory rate of 35.0 percent due principally to the effect of tax-exempt municipal bond interest income and non-taxable dividend income.

We have recognized no liability for unrecognized tax benefits at June 30, 2011 or December 31, 2010, or at any time during the six-month period ended June 30, 2011. In addition, we have not accrued for interest and penalties related to unrecognized tax benefits. However, if interest and penalties would need to be accrued related to unrecognized tax benefits, such amounts would be recognized as a component of federal income tax expense.

We file a consolidated federal income tax return. We also file income tax returns in various state jurisdictions. We are no longer subject to federal or state income tax examination for years before 2006. There are ongoing examinations of income tax returns by the Internal Revenue Service of the 2008 tax year, by the State of Illinois of the 2007 and 2008 tax years and by the State of Florida of the 2008 through 2010 tax years.

Recently Issued Accounting Standards

Adopted Accounting Standards

Fair Value Measurements

In January 2010, the Financial Accounting Standards Board ("FASB") issued revised accounting guidance that clarifies and provides additional disclosure requirements related to recurring and non-recurring fair value measurements. The guidance requires separate disclosures for the amounts of significant transfers in and out of Level 1 and Level 2 fair value measurements, along with an explanation for the transfers. Additionally, a separate disclosure is required for purchases, sales, issuances and settlements on a gross basis for Level 3 fair value measurements. The guidance also provides additional clarification for both the level of disaggregation reported for each class of assets or liabilities and disclosures of inputs and valuation techniques used to measure fair value for both recurring and non-recurring fair value measurements for assets and liabilities categorized as Level 2 or Level 3.

The new disclosures and clarifications of existing disclosures were effective for interim and annual reporting periods beginning after December 15, 2009, except for the disclosures about purchases, sales, issuances, and settlements in the roll forward of activity in Level 3 fair value measurements, which are effective for fiscal years beginning after December 15, 2010. Refer to Note 3 “Fair Value of Financial Instruments” for the information required to be disclosed upon our adoption of the guidance, effective January 1, 2011.

Pending Adoption of Accounting Standards

Policy Acquisition Costs

In October 2010, the FASB issued updated accounting guidance to address the diversity in practice for the accounting for costs associated with acquiring or renewing insurance contracts. This guidance modifies the definition of acquisition costs to specify that a cost must be incremental and directly related to the successful acquisition of a new or renewal insurance contract in order to be deferred. Acquisition costs that are not eligible for deferral are to be charged to expense in the period incurred. If application of this guidance would result in the capitalization of acquisition costs that had not previously been capitalized by a reporting entity, the entity may elect not to capitalize those costs. The updated guidance is effective for interim and annual reporting periods beginning after December 15, 2011. We are currently evaluating the impact that our adoption of the guidance, effective January 1, 2012, will have on our Consolidated Financial Statements.

Fair Value Measurements

In May 2011, the FASB issued updated accounting guidance that changes the wording used to describe many of the requirements in GAAP for measuring fair value and for disclosing information about fair value measurements to ensure consistency between GAAP and International Financial Reporting Standards. The guidance also expands the disclosures for fair value measurements that are estimated using significant unobservable (Level 3) inputs. This new guidance is to be applied prospectively. We are currently evaluating the impact that our adoption of the guidance, effective January 1, 2013, will have on the information disclosed in our Consolidated Financial Statements.

Comprehensive Income

In June 2011, the FASB issued revised accounting guidance that eliminates the option to present the components of other comprehensive income as part of the statement of stockholders' equity. Instead, comprehensive income must be reported in either a single continuous statement of comprehensive income which contains two sections, net income and other comprehensive income, or in two separate but consecutive statements. The guidance will be effective for public companies during the interim and annual periods beginning after December 15, 2011 with early adoption permitted. This new guidance is to be applied retrospectively. We have not adopted this guidance and currently we are evaluating the impact that our adoption of this guidance will have on the presentation of our Consolidated Financial Statements.