Significant Accounting Policies	9 Months Ended
Significant Accounting Policies	Sep. 30, 2020
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies Basis of presentation The accompanying unaudited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the nine months ended September 30, 2020 are not necessarily indicative of the results that may be expected for the year ending December 31, 2020. For further information, refer to the financial statements and footnotes included in our Form 10-K for the year ended December 31, 2019 as filed with the Securities and Exchange Commission on February 27, 2020. 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. Recently adopted accounting standards In June 2016, the Financial Accounting Standards Board issued Accounting Standards Update ("ASU") 2016-13, "Financial Instruments-Credit Losses", which requires financial assets measured at amortized cost to be presented at the net amount expected to be collected through the use of a new forward-looking current expected credit loss model and credit losses relating to available-for-sale debt securities to be recognized through an allowance for credit losses. We adopted this guidance, which applies to our receivable from Erie Insurance Exchange and affiliates, agent loans and investments, on January 1, 2020. For assets measured at amortized cost for which a current expected credit loss allowance was required, we adopted the guidance using the modified-retrospective approach. At January 1, 2020, we recorded current expected credit loss allowances related to agent loans of $0.8 million and receivables from Erie Insurance Exchange and affiliates of $0.6 million. This resulted in the recording of a cumulative effect adjustment, net of taxes, to retained earnings of $1.1 million. Our available-for-sale investments are not measured at amortized cost, and therefore do not require the use of a current expected credit loss model. Any credit losses, however, are required to be recorded as an allowance for credit losses rather than a reduction of the carrying value of the asset. For available-for-sale securities, we adopted the guidance using the prospective approach and recorded an initial allowance for credit losses of $0.6 million at March 31, 2020. The adoption of this standard did not have a material impact on our Statements of Financial Position, net income or net cash flows. Investments Available-for-sale securities – Fixed maturity debt securities and redeemable preferred stock are classified as available-for-sale and reported at fair value with unrealized investment gains and losses, net of income taxes, recognized in other comprehensive income. Available-for-sale securities with a remaining maturity of 12 months or less and any security that we intend to sell as of the reporting date are classified as current assets. Available-for-sale securities in an unrealized loss position are evaluated to determine whether the impairment is a result of credit loss or other factors. If we have the intent to sell or it's more likely than not that we would be required to sell the security before recovery of the amortized cost basis, the entire impairment is recognized in earnings. Securities that have experienced a decline in fair value that we do not intend to sell, and that we will not be required to sell before recovery, are evaluated to determine if the decline in fair value is credit related. Impairment resulting from a credit loss is recognized in earnings with a corresponding allowance on the balance sheet. Future recoveries of credit loss result in an adjustment to the allowance and earnings in the period the credit conditions improve. Factors considered in the evaluation of credit loss include the extent to which fair value is less than cost and fundamental factors specific to the issuer such as financial condition, changes in credit ratings, near and long-term business prospects and other factors, as well as the likelihood of recovery of the amortized cost of the security. If the qualitative review indicates credit impairment, the allowance for credit loss is measured as the amount that the security’s amortized cost exceeds the present value of cash flows expected to be collected and is limited to the amount that fair value is below amortized cost. Realized gains and losses and investment income – Realized gains and losses on sales of available-for-sale and equity securities are recognized in income based upon the specific identification method and reported as net realized investment gains (losses). Interest income is recognized as earned and includes amortization of premium and accretion of discount. Income is recognized based on the constant effective yield method, which includes periodically updated prepayment assumptions obtained from third party data sources on our prepaying securities. The effective yield for prepaying securities is recalculated on a retrospective basis. Dividend income is recognized at the ex-dividend date. Both interest and dividend income are reported as net investment income. We do not record an allowance for credit losses on accrued investment income as any amount deemed uncollectible is reversed from interest income in the period the expected payment defaults. Agent loans Agent loans, the majority of which are senior secured, are carried at unpaid principal balance with interest recorded in investment income as earned. The current portion of agent loans is recorded in prepaid expenses and other current assets. The adoption of ASU 2016-13 on January 1, 2020 requires the recording of a current expected credit loss allowance on these loans. The allowance is estimated using available loss history and/or external loss rates based on comparable loan losses and considers current conditions and forecasted information. When establishing the expected credit loss allowance upon implementation of ASU 2016-13, a cumulative effect adjustment was recorded to beginning retained earnings. Future changes to the allowance will be recognized in earnings as adjustments to net impairment losses. Prior to the adoption of ASU 2016-13, we did not record an allowance for credit losses as the majority of these loans are senior secured and have had insignificant default amounts. In the second quarter of 2020, we entered into an agreement with a bank for the establishment of a loan participation program for agent loans. The maximum amount of loans to be funded through this program is $100 million. We have committed to fund a minimum of 30% of each loan executed through this program. Additionally, we have agreed to guarantee a portion of the funding provided by the other participants in the program upon execution of each loan. In the third quarter of 2020, loans executed under the agreement totaled $3.1 million, of which our portion of the loans is $0.9 million, and the related guarantee is $0.7 million. Our portion of these loans and the related current expected credit loss allowance are recorded in the same manner as our direct agent loans. Other assets Other assets include operating lease assets and other long-term prepaid assets. The determination of whether an arrangement is a lease, and the related lease classification, is made at inception of a contract. Our leases are classified as operating leases. Operating lease assets and liabilities are recorded at inception based on the present value of the future minimum lease payments over the lease term at commencement date. When an implicit rate for the lease is not available, we use our incremental borrowing rate based on the information available at commencement date to determine the present value of future payments. Lease terms include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Most of our lease contracts contain lease and non-lease components. Non-lease components are expensed as incurred. Operating lease assets are included in other assets, and the current and noncurrent portions of the operating lease liabilities are included in accounts payable and accrued expenses and other long-term liabilities, respectively.