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Significant Accounting Policies (Policies)
3 Months Ended
Mar. 31, 2013
Accounting Policies [Abstract]  
Basis of presentation
Basis of presentation
The accompanying consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) and include the accounts of Indemnity together with its affiliate companies in which Indemnity holds a majority voting or economic interest.
Use of estimates
Use of estimates
The preparation of financial statements in conformity with GAAP requires us 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.

In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of our financial position, results of operations and cash flows for the interim periods have been included.  Operating results for the three month period ended March 31, 2013 are not necessarily indicative of the results that may be expected for the year ending December 31, 2013.  The accompanying consolidated financial statements and notes should be read in conjunction with the consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2012 as filed with the Securities and Exchange Commission on February 26, 2013.
Principles of consolidation
Principles of consolidation
We consolidate the Exchange as a variable interest entity for which Indemnity is the primary beneficiary.  All intercompany accounts and transactions have been eliminated in consolidation.  The required presentation of noncontrolling interests is reflected in the consolidated financial statements.  Noncontrolling interests represent the ownership interests of the Exchange, all of which is held by parties other than Indemnity (i.e. the Exchange’s subscribers (policyholders)).  Noncontrolling interests also include the Exchange subscribers’ ownership interest in EFL.
 
Presentation of assets and liabilities – While the assets of the Exchange are presented separately in the Consolidated Statements of Financial Position, the Exchange’s assets can only be used to satisfy the Exchange’s liabilities or for other unrestricted activities.  Accounting Standards Codification (“ASC”) 810, Consolidation, does not require separate presentation of the Exchange’s assets; however, because the shareholders of Indemnity have no rights to the assets of the Exchange and, conversely, the Exchange has no rights to the assets of Indemnity, we have presented the invested assets of the Exchange separately on the Consolidated Statements of Financial Position along with the remaining consolidated assets reflecting the Exchange’s portion parenthetically.  Liabilities are required under ASC 810, Consolidation, to be presented separately for the Exchange on the Consolidated Statements of Financial Position as the Exchange’s creditors do not have recourse to the general credit of Indemnity.
 
Rights of shareholders of Indemnity and subscribers (policyholders) of the Exchange – The shareholders of Indemnity, through the management fee, have a controlling financial interest in the Exchange; however, they have no other rights to or obligations arising from assets and liabilities of the Exchange.  The shareholders of Indemnity own its equity but have no rights or interest in the Exchange’s (noncontrolling interest) income or equity.  The noncontrolling interest equity represents the Exchange’s equity held for the interest of its subscribers (policyholders), who have no rights or interest in the Indemnity shareholder interest income or equity.
 
All intercompany assets, liabilities, revenues and expenses between Indemnity and the Exchange have been eliminated in the Consolidated Financial Statements.
Adopted accounting pronouncements
Adopted accounting pronouncements
In February 2013, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income.  The amendments in this ASU require an entity to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the line items affected by the reclassification. For amounts that are not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other related disclosures for additional information. ASU 2013-02 is effective prospectively for interim and annual periods beginning after December 15, 2012.  We have elected to present amounts reclassified out of accumulated other comprehensive income by component and the respective line items of net income in the notes to our consolidated financial statements. See Note 12. "Indemnity's Accumulated Other Comprehensive Loss".

Pending accounting pronouncements
In February 2013, the FASB issued ASU 2013-04, Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation Is Fixed at the Reporting Date. The amendments in this ASU provide guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation within the scope of this guidance is fixed at the reporting date, except for obligations addressed within existing guidance in GAAP. ASU 2013-04 is effective for interim and annual periods beginning after December 15, 2013, with early adoption permitted.  We do not expect the adoption of this new guidance to have a material impact on our consolidated financial statements.
Earnings per share
Class A and Class B basic earnings per share and Class B diluted earnings per share are calculated under the two-class method. The two-class method allocates earnings to each class of stock based upon its dividend rights.  Class B shares are convertible into Class A shares at a conversion ratio of 2,400 to 1.

Class A diluted earnings per share are calculated under the if-converted method, which reflects the conversion of Class B shares to Class A shares. Diluted earnings per share calculations include the effect of any potential common shares. Potential common shares include outstanding vested and not yet vested awards related to our outside directors’ stock compensation plan and any employee stock based awards.
Consolidation of variable interest entity
Erie Insurance Exchange
The Exchange is a reciprocal insurance exchange domiciled in Pennsylvania, for which Indemnity serves as attorney-in-fact.  Indemnity holds a variable interest in the Exchange due to the absence of decision-making capabilities by the equity owners (subscribers/policyholders) of the Exchange and due to the significance of the management fee the Exchange pays to Indemnity as its decision maker.  As a result, Indemnity is deemed to have a controlling financial interest in the Exchange and is considered to be its primary beneficiary.
 
Consolidation of the Exchange’s financial results is required given the significance of the management fee to the Exchange and because Indemnity has the power to direct the activities of the Exchange that most significantly impact the Exchange’s economic performance.  The Exchange’s anticipated economic performance is the product of its underwriting results combined with its investment results.  The fees paid to Indemnity under the subscriber’s agreement impact the anticipated economic performance attributable to the Exchange’s results.  Indemnity earns a management fee from the Exchange for the services it provides as attorney-in-fact.  Indemnity’s management fee revenues are based on all premiums written or assumed by the Exchange.  Indemnity’s Board of Directors determines the management fee rate to be paid by the Exchange to Indemnity.  This rate cannot exceed 25% of the direct and assumed written premiums of the Exchange, as defined by the subscriber’s agreement signed by each policyholder.  Management fee revenues and management fee expenses are eliminated upon consolidation.
 
The shareholders of Indemnity have no rights to the assets of the Exchange and no obligations arising from the liabilities of the Exchange.  Indemnity has no obligation related to any underwriting and/or investment losses experienced by the Exchange.  Indemnity would, however, be adversely impacted if the Exchange incurred significant underwriting and/or investment losses.  If the surplus of the Exchange were to decline significantly from its current level, its financial strength ratings could be reduced and, as a consequence, the Exchange could find it more difficult to retain its existing business and attract new business.  A decline in the business of the Exchange would have an adverse effect on the amount of the management fees Indemnity receives.  In addition, a decline in the surplus of the Exchange from its current level may impact the management fee rate received by Indemnity.  Indemnity also has an exposure to a concentration of credit risk related to the unsecured receivables due from the Exchange for its management fee. If any of these events occurred, Indemnity’s financial position, financial performance and/or cash flows could be adversely impacted.
 
All property and casualty and life insurance operations are owned by the Exchange, and Indemnity functions solely as the management company.
 
Indemnity has not provided financial or other support to the Exchange for any the reporting periods presented.  At March 31, 2013, there are no explicit or implicit arrangements that would require Indemnity to provide future financial support to the Exchange.  Indemnity is not liable if the Exchange was to be in violation of its debt covenants or was unable to meet its obligation for unfunded commitments to limited partnerships.
Fair value of financial instruments
Our available-for-sale and trading securities are recorded at fair value, which is the price that would be received to sell the asset in an orderly transaction between willing market participants as of the measurement date.
 
Valuation techniques used to derive the fair value of our available-for-sale and trading securities are based upon observable and unobservable inputs.  Observable inputs reflect market data obtained from independent sources.  Unobservable inputs reflect our own assumptions regarding fair market value for these securities.  Although the majority of our prices are obtained from third party sources, we also perform an internal pricing review for securities with low trading volumes in the current market conditions.  Financial instruments are categorized based upon the following characteristics or inputs to the valuation techniques:
 
Level 1 – Quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity can access at the measurement date.

Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly.

Level 3 – Unobservable inputs for the asset or liability.
 
Estimates of fair values for our investment portfolio are obtained primarily from a nationally recognized pricing service.  Our Level 1 category includes those securities valued using an exchange traded price provided by the pricing service.  The methodologies used by the pricing service that support a Level 2 classification of a financial instrument include multiple verifiable, observable inputs including benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data.  Pricing service valuations for Level 3 securities are based upon proprietary models and are used when observable inputs are not available or in illiquid markets.
 
In limited circumstances we adjust the price received from the pricing service when, in our judgment, a better reflection of fair value is available based upon corroborating information and our knowledge and monitoring of market conditions such as a disparity in price of comparable securities and/or non-binding broker quotes.  In other circumstances, certain securities are internally priced because prices are not provided by the pricing service.
 
We perform continuous reviews of the prices obtained from the pricing service.  This includes evaluating the methodology and inputs used by the pricing service to ensure that we determine the proper classification level of the financial instrument.  Price variances, including large periodic changes, are investigated and corroborated by market data.  We have reviewed the pricing methodologies of our pricing service as well as other observable inputs, such as data, and transaction volumes and believe that their prices adequately consider market activity in determining fair value.  Our review process continues to evolve based upon accounting guidance and requirements.
 
When a price from the pricing service is not available, values are determined by obtaining non-binding broker quotes and/or market comparables.  When available, we obtain multiple quotes for the same security.  The ultimate value for these securities is determined based upon our best estimate of fair value using corroborating market information.  Our evaluation includes the consideration of benchmark yields, reported trades, issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data.
 
For certain structured securities in an illiquid market, there may be no prices available from a pricing service and no comparable market quotes available.  In these situations, we value the security using an internally-developed, risk-adjusted discounted cash flow model.
Investments - Limited partnerships
Limited partnerships
Limited partnership investments, excluding certain real estate limited partnerships recorded at fair value, are generally reported on a one-quarter lag, therefore our year-to-date limited partnership results through March 31, 2013 are comprised of partnership financial results for the fourth quarter of 2012.  Given the lag in reporting, our limited partnership results do not reflect the market conditions of the first quarter of 2013.  Cash contributions made to and distributions received from the partnerships are recorded in the period in which the transaction occurs.
Deferred taxes
Deferred tax assets and liabilities are recognized for the expected future tax consequences of events that have been included in the financial statements or tax returns.  Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount expected to be realized.
Commitments and contingencies
We are involved in litigation arising in the ordinary course of conducting business.  In accordance with current accounting standards for loss contingencies and based upon information currently known to us, we establish reserves for litigation when it is probable that a loss associated with a claim or proceeding has been incurred and the amount of the loss or range of loss can be reasonably estimated.  When no amount within the range of loss is a better estimate than any other amount, we accrue the minimum amount of the estimable loss.  To the extent that such litigation against us may have an exposure to a loss in excess of the amount we have accrued, we believe that such excess would not be material to our consolidated financial condition, operations or cash flows.  Legal fees are expensed as incurred.  We believe that our accruals for legal proceedings are appropriate and, individually and in the aggregate, are not expected to be material to our consolidated financial condition, operations or cash flows.
 
We review all litigation on an ongoing basis when making accrual and disclosure decisions.  For certain legal proceedings, we cannot reasonably estimate losses or a range of loss, if any, particularly for proceedings that are in their early stages of development or where the plaintiffs seek indeterminate damages.  Various factors, including, but not limited to, the outcome of potentially lengthy discovery and the resolution of important factual questions, may need to be determined before probability can be established or before a loss or range of loss can be reasonably estimated.  If the loss contingency in question is not both probable and reasonably estimable, we do not establish an accrual and the matter will continue to be monitored for any developments that would make the loss contingency both probable and reasonably estimable.  In the event that a legal proceeding results in a substantial judgment against, or settlement by, us, there can be no assurance that any resulting liability or financial commitment would not have a material adverse effect on the financial condition, results of operations or cash flows of the Indemnity shareholder interest or the consolidated financial statements of Erie Indemnity Company.