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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
 12 Months Ended
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Discontinued Operations Discontinued OperationsWe have historically reported our operations in two business segments: property and casualty insurance and life insurance. On September 18, 2017, the Company signed a definitive agreement to sell its subsidiary, United Life Insurance Company ("United Life"), to Kuvare US Holdings, Inc. ("Kuvare") and on March 30, 2018, the sale closed. As a result, our life insurance business, previously a separate segment, was considered held for sale and reported as discontinued operations in the Consolidated Balance Sheets, Consolidated Statements of Income and Comprehensive Income and Consolidated Statements of Cash Flows (collectively, the "Consolidated Financial Statements"). Subsequent to the announcement of this sale, our continuing operations are reported as one business segment. All current and prior periods reflected in this Form 10-K have been presented as continuing and discontinued operations, unless otherwise noted. For more information, refer to Note 17 "Discontinued Operations."
Principles of Consolidation Principles of Consolidation
The accompanying Consolidated Financial Statements include United Fire and its wholly owned subsidiaries: United Fire & Casualty Company, United Real Estate Holdings Company, LLC, Addison Insurance Company, Lafayette Insurance Company, United Fire & Indemnity Company, United Fire Lloyds, UFG Specialty Insurance Company, Financial Pacific Insurance Company, Franklin Insurance Company, Mercer Insurance Company, and Mercer Insurance Company of New Jersey, Inc.
United Fire Lloyds, an affiliate of United Fire & Indemnity Company, is organized as a Texas Lloyds plan, which is an aggregation of underwriters who, under a common name, engage in the business of insurance through a corporate attorney-in-fact. United Fire Lloyds is financially and operationally controlled by United Fire & Indemnity Company, its corporate attorney-in-fact, pursuant to three types of agreements: trust agreements between United Fire & Indemnity Company and certain individuals who agree to serve as trustees; articles of agreement among the trustees who agree to act as underwriters to establish how the Lloyds plan will be operated; and powers of attorney from each of the underwriters appointing a corporate attorney-in-fact, who is authorized to operate the Lloyds plan. Because United Fire & Indemnity Company can name the trustees, the Lloyds plan is perpetual, subject only to United Fire & Indemnity Company's desire to terminate it.
United Fire & Indemnity Company provides all of the statutory capital necessary for the formation of the Lloyds plan by contributing capital to each of the trustees. The trust agreements require the trustees to become underwriters of the Lloyds plan, to contribute the capital to the Lloyds plan, to sign the articles of agreement and to appoint the attorney-in-fact. The trust agreements also require the trustees to pay to United Fire & Indemnity Company all of the profits and benefits received by the trustees as underwriters of the Lloyds plan, which means that United Fire & Indemnity Company has the right to receive 100 percent of the gains and profits from the Lloyds plan. The trustees serve at the pleasure of United Fire & Indemnity Company, which may remove a trustee and replace that trustee at any time. Termination of a trustee must be accompanied by the resignation of the trustee as an underwriter, so that the trustee can obtain the capital contribution from the Lloyds plan to reimburse United Fire & Indemnity Company. By retaining the ability to terminate trustees, United Fire & Indemnity Company possesses the ability to name and remove the underwriters.
United Real Estate Holdings, LLC, formed in 2013, is a wholly owned subsidiary of United Fire & Casualty Company and is organized as an Iowa limited liability corporation, an unincorporated association formed for the purpose of holding United Fire & Casualty Company's ownership in commercial real estate.
Basis of Presentation Basis of Presentation

The accompanying Consolidated Financial Statements have been prepared on the basis of U.S. generally accepted accounting principles ("GAAP"), which differ in some respects from those followed in preparing our statutory reports to insurance regulatory authorities. Our stand-alone subsidiary financial statements submitted to insurance regulatory authorities are presented on the basis of accounting practices prescribed or permitted by the insurance departments of the states in which we are domiciled ("statutory accounting principles").
Use of Estimates Use of EstimatesThe 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; reinsurance receivables and recoverables; future policy benefits and losses, claims and loss settlement expenses; and pension and post-retirement benefit obligations.
Property and Casualty and Life Insurance Business Continuing Operations - Property and Casualty Insurance BusinessPremiums written are deferred and recorded as earned premium on a daily pro rata basis over the terms of the respective policies. Unearned premium reserves are established for the portion of premiums written applicable to the unexpired term of insurance policies in force.Discontinued Operations - Life Insurance BusinessOur whole life and term insurance (i.e., traditional business) premiums are reported as earned when due and benefits and expenses are associated with premium income in order to result in the recognition of profits over the lives of the related contracts.
Premiums Receivable Premiums receivable are presented net of an estimated allowance for doubtful accounts. Premiums receivable are presented net of an estimated allowance for doubtful accounts, which is based on a periodic evaluation of the aging and collectability of amounts due from agents and policyholders.
Loss and Loss Settlement Expense Reserves To establish loss and loss settlement expense reserves, we make estimates and assumptions about the future development of claims. Actual results could differ materially from those estimates, which are subjective, complex and inherently uncertain. When we establish and adjust reserves, we do so given our knowledge at the time of the circumstances and facts of known claims. To the extent that we have overestimated or underestimated our loss and loss settlement expense reserves, we adjust the reserves in the period in which such adjustment is determined.We record our best estimate of reserves for claim litigation that arises in the ordinary course of business. We consider all of our pending litigation as of December 31, 2018 to be ordinary, routine and incidental to our business.
Universal Life and Annuity Policies On universal life and deferred annuity policies (i.e., non-traditional business), income and expenses are reported when charged and credited to policyholder account balances in order to result in recognition of profits over the lives of the related contracts. We accomplish this by means of a provision for future policy benefits and the deferral and subsequent amortization of policy acquisition costs.
Future Policy Benefits Liability Liabilities for future policy benefits for traditional products are computed by the net level premium method, using interest assumptions ranging from 3.15 percent to 6.0 percent and withdrawal, mortality and morbidity assumptions appropriate at the time the policies were issued. Liabilities for non-traditional business are stated at policyholder account values before surrender charges. Liabilities for traditional immediate annuities are based primarily upon future anticipated cash flows using assumptions for mortality and interest rates. Liabilities for deferred annuities are carried at the account value.
Reinsurance ReinsurancePremiums earned and losses and loss settlement expenses incurred are reported net of reinsurance ceded. Ceded insurance business is accounted for on a basis consistent with the original policies issued and the terms of the reinsurance contracts.
Investments Investments
Investments in fixed maturities include bonds and redeemable preferred stocks. Our investments in held-to-maturity fixed maturities are recorded at amortized cost. Our investments in available-for-sale fixed maturities and trading securities are recorded at fair value.
In 2018, due to the change in accounting principle adopted on January 1, 2018 described in this section under "Recently Issued Accounting Standards," investments in equity securities, which include common and non-redeemable preferred stocks are recorded at fair value with changes in value recorded as a component of income. Prior to 2018, the change in the fair value of equity securities were held as available-for-sale securities and were reported as a component of accumulated other comprehensive income, net of applicable deferred income taxes, in stockholders' equity.
Changes in unrealized appreciation and depreciation, with respect to available-for-sale fixed maturities are reported as a component of accumulated other comprehensive income, net of applicable deferred income taxes, in stockholders' equity. Changes in unrealized appreciation and depreciation, with respect to trading securities, are reported as a component of income.
Other long-term investments consist primarily of our interests in limited liability partnerships that are recorded on the equity method of accounting.
Cash and Cash Equivalents 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.
Deferred Policy Acquisition Costs roperty and casualty insurance policy acquisition costs deferred are amortized as premium revenue is recognized. The method followed in computing DAC limits the amount of such deferred costs to their estimated realizable value. This takes into account the premium to be earned, losses and loss settlement expenses expected to be incurred and certain other costs expected to be incurred as the premium is earned. This calculation is performed by line of business in a manner consistent with how the policies are currently being marketed and managed.

For the discontinued operations traditional life insurance policies, DAC is amortized to income over the premium-paying period in proportion to the ratio of the expected annual premium revenue to the expected total premium revenue. Expected premium revenue and gross profits are based on the same mortality and withdrawal assumptions used in determining future policy benefits. These assumptions are not revised after policy issuance unless the recorded DAC asset is deemed to be unrecoverable from future expected profits.

For the discontinued operations non-traditional life insurance policies, DAC is amortized over the anticipated terms in proportion to the ratio of the expected annual gross profits to the total expected gross profits. Changes in the amount or timing of expected gross profits result in adjustments to the cumulative amortization of these costs. The effect on amortization of DAC for revisions to estimated gross profits is reported in earnings in the period the estimated gross profits are revised.

The effect on DAC that results from the assumed realization of unrealized gains (losses) on investments allocated to non-traditional life insurance business is recognized with an offset to net unrealized investment appreciation as of the balance sheet date.Deferred Policy Acquisition Costs ("DAC")

Certain costs associated with underwriting new business (primarily commissions, premium taxes and variable underwriting and policy issue expenses associated with successful acquisition efforts) are deferred.
Property, Equipment and Depreciation Property, Equipment and DepreciationProperty and equipment is presented at cost less accumulated depreciation.Expenditures for maintenance and repairs on property and equipment are generally expensed as incurred. We periodically review these assets for impairment whenever events or changes in business circumstances indicate that the carrying value of the underlying asset may not be recoverable. A loss would be recognized if the estimated fair value of the asset were less than its carrying value.
Depreciation is computed primarily by the straight-line method over the following estimated useful lives:
 
Useful Life
Computer equipment and software
Three years
Furniture and fixtures
Seven years
Leasehold improvements
Shorter of the lease term or useful life of the asset
Real estate
Seven to thirty-nine years
Airplane
Five years
Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets
Goodwill and other intangible assets arise as a result of business combinations and consist of the excess of the fair value of consideration paid over the tangible assets acquired and liabilities assumed. All of our goodwill and the majority of our intangible assets relate to the acquisition of Mercer Insurance Group on March 28, 2011. We evaluate goodwill and other intangible assets for impairment at least on an annual basis or whenever events or changes in circumstances indicate that it is more likely than not that the carrying amount of goodwill and other intangible assets may exceed its implied fair value. Goodwill is evaluated at the reporting unit level. Any impairment is charged to operations in the period that the impairment is identified. In 2016 we performed a quantitative impairment assessment of our goodwill and in 2018 and 2017, we performed a qualitative impairment assessment of our goodwill. As a result of these assessments, we did not recognize an impairment charge on our goodwill in 2018, 2017 or 2016.
Our other intangible assets, which consist primarily of agency relationships, trade names, state insurance licenses, and software, are being amortized by the straight-line method over periods ranging from 2 years to 15 years, with the exception of state insurance licenses, which are indefinite-lived and not amortized.
Income Taxes Income Taxes

The Tax Cuts and Jobs Act of 2017 (the "Tax Act") was enacted on December 22, 2017. The Tax Act significantly revised the U.S. corporate income tax laws including lowering the U.S. federal corporate tax rate from 35 percent to 21 percent, effective January 1, 2018.

In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118, which addresses how a company recognizes provisional amounts when a company does not have the necessary information available, prepared or analyzed in reasonable detail to complete its accounting for the effect of the changes in the Tax Act. The measurement period ends when a company has obtained, prepared and analyzed the information necessary to finalize its accounting, but cannot extend beyond one year. As of December 31, 2018 we have completed accounting for the tax effects of enactment of the Tax Act and no adjustments were made during the measurement period.
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.

The Company performs a quarterly review of its tax positions and makes a determination whether it is more likely than not that the tax position will be sustained upon examination. If, based on this review, it appears not more likely than not that the position will be sustained, the Company will calculate any unrecognized tax benefits and calculate any interest and penalties. At December 31, 2018, 2017, and 2016 the Company did not recognize any liability for unrecognized tax benefits. 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 2015.
Stock-Based Compensation Stock-Based Compensation
We currently have two equity compensation plans. One plan allows us to grant restricted and unrestricted stock, stock appreciation rights, incentive stock options, and non-qualified stock options to employees. The other plan allows us to grant restricted and non-qualified stock options to non-employee directors.
We utilize the Black-Scholes option pricing method to establish the fair value of non-qualified stock options granted under our equity compensation plans. Our determination of the fair value of stock options on the date of grant using this option-pricing model is affected by our stock price, as well as assumptions regarding a number of complex and subjective variables, which include the expected volatility in our stock price, the expected term of the award, the expected dividends to be paid over the term of the award and the expected risk-free interest rate. Any changes in these assumptions may materially affect the estimated fair value of the award. For our restricted and unrestricted stock awards, we utilize the fair value of our common stock on the date of grant to establish the fair value of the award.
Comprehensive Income Comprehensive IncomeComprehensive income includes all changes in stockholders' equity during a period except those resulting from investments by and dividends to stockholders.
Subsequent Events Subsequent EventsIn the preparation of the accompanying financial statements, the Company has 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 in the Company's financial statements.
Recently Issued Accounting Standards and Pending Adoption of Accounting Standards Recently Issued Accounting Standards
Accounting Standards Adopted in 2018
Revenue Recognition
In May 2014, the FASB issued comprehensive new guidance on revenue recognition which supersedes nearly all existing revenue recognition guidance under GAAP. The new guidance requires a company to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The standard creates a five-step model that requires companies to exercise judgment when considering the terms of the contract(s) and all relevant facts and circumstances. Insurance contracts are not within the scope of this new guidance. The new guidance is effective for annual and interim periods beginning after December 15, 2017. The Company adopted the guidance as of January 1, 2018. The adoption of the new guidance had no impact on the Company's reporting and disclosure of net premiums earned from insurance contracts, net investment income or net realized gains and losses, as these revenue streams are not within the scope of this new guidance. The remaining revenue streams are immaterial and not impacted by the new standard.
Financial Instruments
In January 2016, the FASB issued guidance updating certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. The amendments in this update supersede the guidance to classify equity securities with readily determinable fair values into different categories (for example, trading or available-for-sale) and require equity securities to be measured at fair value with changes in the fair value recognized through net income. The new guidance also simplifies the impairment process for equity investments without readily determinable fair values. The new guidance is effective for annual periods beginning after December 15, 2017 and interim periods within those years. The Company adopted the new guidance as of January 1, 2018. The adoption of the new guidance resulted in a reclassification from accumulated other comprehensive income to retained earnings of $191,244 after tax, which is equal to the amount of net unrealized gains and losses on available-for-sale equity securities on January 1, 2018. Also, in the period ended December 31, 2018, the Company recognized an after-tax net realized investment loss from continuing operations of $17,375 in net income from the change in value of equity securities in accordance with the adoption of this new accounting guidance.
Statement of Cash Flows - Classification of Certain Cash Receipts and Payments
In August 2016, the FASB issued an update that clarifies the classification of certain cash receipts and payments in the Statement of Cash Flows. The update addresses eight existing cash flow issues by clarifying the correct classification to establish uniformity in practice. The updated guidance is effective for annual periods beginning after December 15, 2017 and interim periods within those years. The Company adopted the new guidance as of January 1, 2018. The adoption had no impact on the Company's financial position and results of operations.
Defined Benefit Retirement Plan Cost
In March 2017, the FASB issued guidance on the presentation of net periodic benefit costs of defined benefit retirement benefit plans in the Statements of Income. The new guidance requires the service cost component of net periodic benefit cost of defined benefit plans to be presented in the same line in the Statements of Income as other employee compensation expenses. Also, under the new guidance, the service cost component of the net periodic benefit costs will be the only portion of costs subject to be capitalized in assets. The new guidance is effective for annual periods beginning after December 15, 2017 and interim periods within those years. The Company adopted the new guidance as of January 1, 2018. The adoption of the new guidance resulted in a change in the capitalization of deferred acquisition costs to only include the pension and post retirement service costs in place of the total net periodic benefit costs. The adoption had an immaterial impact on the Company's financial position and results of operations. Additionally, the adoption did not impact the Company's presentation in the Statements of Income as all net periodic benefit costs and employee compensation expenses are included within the same category in the Statements of Income.
Share-Based Payments
In May 2017, the FASB issued new guidance which clarifies and addresses the diversity in practice when there is a change in the terms of a share-based payment award. The updated guidance clarifies when to use modification accounting when there is a change in the terms of a share-based payment and provides three conditions where modification accounting should not be applied. The new guidance is effective for annual and interim periods beginning after December 15, 2017. The Company adopted the new guidance as of January 1, 2018. The adoption had no impact on the Company's financial position and results of operations.
Pending Adoption of Accounting Standards
Intangibles - Other Internal Use Software

In August 2018, the FASB issued guidance to align the requirements for capitalizing implementation costs incurred in a cloud computing hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The guidance requires the Company to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. The new guidance is effective for annual and interim periods beginning after December 15, 2019. The Company will adopt the new guidance as of January 1, 2020. Management currently believes that the adoption will not have an impact on the Company's financial position or results of operations.
Leases
In February 2016, the FASB issued guidance on the accounting for leases. The new guidance requires lessees to place a right-of-use asset and a lease liability on their balance sheets. The lease liability will be based on the present value of the future lease payments and the right-of-use asset will be based on the liability. Expenses will be recognized on the income statement in a similar manner as previous methods. The new guidance also requires companies to classify all leases as operating leases or financing leases. We believe all of our leases will be classified as operating leases. The new guidance is effective for annual periods beginning after December 15, 2018 and interim periods within those years. The Company will adopt the new guidance under a modified retrospective transition approach using the package of practical expedients and the Company will not adopt the hindsight practical expedient as of January 1, 2019. We expect to use the accounting standard adoption date as our date of initial application.
The Company has an inventory of its operating leases and has calculated the total undiscounted future minimum lease payments, which are disclosed in Note 13 "Lease Commitments" of this report. The Company estimates the present value of future minimum lease payments at December 31, 2018 is $20.1 million, which represents less than 1.0 percent of the Company's total assets at December 31, 2018. The Company will record this amount as a lease liability on their Balance Sheets on January 1, 2019 and an estimated right-of-use asset of $19.7 million. The Company used their incremental borrowing rate of their credit facility described in Note 14 "Credit Facility" of this Form 10-K, as the discount rate for calculating the present value of the future minimum lease payments where appropriate. For leases that existed prior to the date of initial application or have terms which are not similar to the terms of the credit facility, the Company has elected to use the remaining lease term as of the date of initial application to measure its incremental borrowing rate. In this case, the incremental borrowing rate will be based on current industry borrowing rates for similar Companies with similar ratings.
The Company has a small inventory of property leases for which the Company is the lessor. For these leases, the Company has made the election not to evaluate whether certain sales taxes are the primary obligation of the lessor as owner of the leased asset. The Company has reviewed and updated its processes and controls under the new guidance. Management currently believes that the adoption will not have a significant impact on the Company's financial position or results of operations.
Financial Instruments - Callable Debt Securities
In March 2016, the FASB issued an update to amend the amortization period for certain purchased callable debt securities held at a premium. The update requires the premium to be amortized to the earliest call date. The update
doesn’t change the accounting for securities held at a discount, which will continue to be amortized to maturity. The new guidance is effective for annual periods beginning after December 15, 2018 and interim periods beginning after December 15, 2018. The Company will adopt the new guidance as of January 1, 2019. The adoption will have not have a material impact on the Company's financial position and results of operations.
Income Taxes - Intra-entity Transfers
In October 2016, the FASB issued new guidance on the income tax treatment of intra-entity transfers. The new guidance replaces the current guidance which prohibits the recognition of current and deferred income taxes of intra-entity transfers until the asset is sold externally. Under the new guidance, the exemption is eliminated and income taxes will be recognized on transfers of intra-entity assets. The new guidance is effective for annual periods beginning after December 15, 2018 and interim periods beginning after December 15, 2019. The Company will adopt the new guidance as of January 1, 2019. Management currently believes that the adoption will have an immaterial impact on the Company's financial position and results of operations.
Financial Instruments - Credit Losses
In June 2016, the FASB issued new guidance on the measurement of credit losses for most financial instruments. The new guidance replaces the current incurred loss model for recognizing credit losses with an expected loss model for instruments measured at amortized cost and requires allowances to be recorded for available-for-sale debt securities rather than reduce the carrying amount. These allowances will be remeasured each reporting period. The new guidance is effective for annual periods beginning after December 15, 2019 and interim periods within those years. The new guidance will impact the Company's portfolio of mortgage loan investments which are carried at amortized cost and the impairment model related to our available-for-sale fixed-maturity portfolio. The Company will adopt the new guidance as of January 1, 2020 and is currently evaluating the impact on the Company's financial position, results of operations and key processes.
Goodwill
In January 2017, the FASB issued new guidance which simplifies the test for goodwill impairment. The new guidance eliminates the implied fair value calculation when measuring a goodwill impairment charge. Under the new guidance, impairment charges will be based on the excess of the carrying value over fair value of goodwill. The new guidance is effective for annual and interim periods beginning after December 15, 2019. The Company will adopt the new guidance as of January 1, 2020 and it currently believes the adoption will have no impact on the Company's financial position and results of operations.
Financial Instruments - Disclosures
In August 2018, the FASB issued new guidance which modifies the disclosure requirements on fair value measurements of financial instruments. The new guidance removes the requirement for disclosing the amount and reason for transfers between Level 1 and Level 2 investment securities and the valuation processes for Level 3 fair value measurements. The guidance also requires additional disclosures on the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. The new guidance is effective for annual and interim periods beginning after December 15, 2019. The Company will adopt the new guidance as of January 1, 2020. Management currently believes the new guidance will modify existing fair value disclosures, but will not have an impact on the Company's financial position and results of operations.
Defined Benefit Plans - Disclosures
In August 2018, the FASB issued new guidance which modifies the disclosure requirements for employers that sponsor defined benefit pension and postretirement plans. The new guidance removes the requirement for disclosing the amounts in accumulated other comprehensive income expected to be recognized as components of net periodic benefit costs in the next year and the sensitivity of postretirement health plans to one-percentage-point changes in medical trend rates. The new guidance is effective for annual periods beginning after December 15, 2019. The Company will adopt the new guidance as of January 1, 2020. Management currently believes the new guidance will
modify existing disclosures, but will not have an impact on the Company's financial position and results of operations.
Earnings Per Share Basic earnings per share is computed by dividing net income by the weighted-average number of common shares outstanding during the reporting period. Diluted earnings per share gives effect to all dilutive common shares outstanding during the reporting period. The dilutive shares we consider in our diluted earnings per share calculation relate to our outstanding stock options and restricted stock awards.
We determine the dilutive effect of our outstanding stock options using the "treasury stock" method. Under this method, we assume the exercise of all of the outstanding stock options whose exercise price is less than the weighted-average market value of our common stock during the reporting period. This method also assumes that the proceeds from the hypothetical stock option exercises are used to repurchase shares of our common stock at the weighted-average market value of the stock during the reporting period. The net of the assumed stock optio
ns exercised and assumed common shares repurchased represents the number of dilutive common shares, which we add to the denominator of the earnings per share calculation.

Fair Value Measurement Current accounting guidance on fair value measurements includes the application of a fair value hierarchy that requires us to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Our financial instruments that are recorded at fair value are categorized into a three-level hierarchy, which is based upon the priority of the inputs to the valuation technique. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets (i.e., Level 1) and the lowest priority to unobservable inputs (i.e., Level 3). If the inputs used to measure fair value fall within different levels of the hierarchy, the category level is based on the lowest priority level input that is significant to the fair value measurement of the financial instrument.
Financial instruments recorded at fair value are categorized in the fair value hierarchy as follows:
•
Level 1: Valuations are based on unadjusted quoted prices in active markets for identical financial instruments that we have the ability to access.
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Level 2: Valuations are based on quoted prices for similar financial instruments, other than quoted prices included in Level 1, in markets that are not active or on inputs that are observable either directly or indirectly for the full term of the financial instrument.
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Level 3: Valuations are based on pricing or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement of the financial instrument. Such inputs may reflect management's own assumptions about the assumptions a market participant would use in pricing the financial instrument.
We review our fair value hierarchy categorizations on a quarterly basis at which time the classification of certain financial instruments may change if the input observations have changed. Transfers between levels, if any, are recorded as of the beginning of the reporting period.
To determine the fair value of the majority of our investments, we utilize prices obtained from independent, nationally recognized pricing services. We obtain one price for each security. When the pricing services cannot provide a determination of fair value for a specific security, we obtain non-binding price quotes from broker-dealers with whom we have had several years experience and who have demonstrated knowledge of the subject security. We request and utilize one broker quote per security.
In order to determine the proper classification in the fair value hierarchy for each security where the price is obtained from an independent pricing service, we obtain and evaluate the vendors' pricing procedures and inputs used to price the security, which include unadjusted quoted market prices for identical securities, such as a New York Stock Exchange closing price, and quoted prices for identical securities in markets that are not active. For fixed maturity securities, an evaluation of interest rates and yield curves observable at commonly quoted intervals, volatility, prepayment speeds, credit risks and default rates may also be performed. We have determined that these processes and inputs result in fair values and classifications consistent with the applicable accounting guidance on fair value measurements.
When possible, we use quoted market prices to determine the fair value of fixed maturities, equity securities, trading securities and short-term investments. When quoted market prices do not exist, we base estimates of fair value on market information obtained from independent pricing services and brokers or on valuation techniques that are both unobservable and significant to the overall fair value measurement of the financial instrument. Such inputs may reflect management's own assumptions about the assumptions a market participant would use in pricing the financial instrument. Our valuation techniques are discussed in more detail throughout this section.
The fair value of our mortgage loans is determined by modeling performed by us based on the stated principal and coupon payments provided for in the loan agreements. These cash flows are then discounted using an appropriate risk-adjusted discount rate to determine the loan's fair value, which is a Level 3 fair value measurement.
The fair value of our policy loans is equivalent to carrying value, which is a reasonable estimate of fair value and is classified as Level 2. We do not make policy loans for amounts in excess of the cash surrender value of the related policy. In all instances, the policy loans are fully collateralized by the related liability for future policy benefits for traditional insurance policies or by the policyholders' account balance for non-traditional policies.
Our other long-term investments consist primarily of our interests in limited liability partnerships that are recorded on the equity method of accounting. The fair value of the partnerships is obtained from the fund managers, which is based on the fair value of the underlying investments held in the partnerships. In management's opinion, these values represent a reasonable estimate of fair value. We have not adjusted the net asset value provided by the fund managers.
For cash and cash equivalents and accrued investment income, carrying value is a reasonable estimate of fair value due to the short-term nature of these financial instruments.

The Company formed a rabbi trust in 2014 to fund obligations under the United Fire & Casualty Company Non-qualified Deferred Compensation Plan and United Fire Group Supplemental Executive Retirement and Deferral Plan (collectively the "Executive Retirement Plans"). Within the rabbi trust, corporate-owned life insurance ("COLI") policies are utilized as an investment vehicle and source of funding for the Company's Executive Retirement Plans. The COLI policies invest in mutual funds, which are priced daily by independent sources. As of December 31, 2018, the cash surrender value of the COLI policies was $4,907, which is equal to the fair value measured using Level 2 inputs, based on the underlying assets of the COLI policies, and is included in other assets in the Consolidated Balance Sheets.

Policy reserves are developed and recorded for deferred annuities, which is an interest-sensitive product, and income annuities. The fair value of the reserve liability for these annuity products is based upon an estimate of the discounted pretax cash flows that are forecast for the underlying business, which is a Level 3 fair value measurement. We base the discount rate on the current U.S. Treasury spot yield curve, which is then risk-adjusted for nonperformance risk and, for interest-sensitive business and market risk factors. The risk-adjusted discount rate is developed using interest rates that are available in the market and representative of the risks applicable to the underlying business.