XML 22 R8.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Summary of Business and Significant Accounting Policies | 12 Months Ended
--- | ---
Dec. 31, 2023
Accounting Policies [Abstract] |
Summary of Business and Significant Accounting Policies | Summary of Business and Significant Accounting Policies Description of Business – eHealth, Inc., a Delaware corporation, and its consolidated subsidiaries (collectively, “eHealth”) is a leading private online health insurance marketplace with a technology and service platform that provides consumer engagement, education and health insurance enrollment solutions. Our mission is to expertly guide consumers through their health insurance enrollment and related options, when, where and how they prefer. Our platform leverages technology to solve a critical problem in a large and growing market by aiding consumers in what has traditionally been a complex, confusing, and opaque health insurance purchasing process. Our omnichannel consumer engagement platform differentiates our offering from other brokers and enables consumers to use our services online, by telephone with a licensed insurance agent, or benefit advisor, or through a hybrid online assisted interaction that includes live agent chat and co-browsing capabilities. We have created a consumer-centric marketplace that offers consumers a broad choice of insurance products that includes thousands of Medicare Advantage, Medicare Supplement, Medicare Part D prescription drug, individual, family, small business and other ancillary health insurance products from over 180 health insurance carriers nationwide. Our plan recommendation tool curates this broad plan selection by analyzing customer health-related information against plan data for insurance coverage fit. This tool is supported by a unified data platform and is available to our ecommerce customers and our benefit advisors. We strive to be the most trusted partner to the consumer in their life's journey through the health insurance market. Unless otherwise specified or required by the context, references in this Annual Report on Form 10-K to “eHealth,” “the Company,” “we,” “us” or “our” mean eHealth, Inc. and its consolidated direct and indirect wholly-owned subsidiaries. Basis of Presentation – Our consolidated financial statements include the accounts of eHealth, Inc. and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. The consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”). Certain prior period amounts have been reclassified to conform with our current period presentation. Subsequent to the issuance of our consolidated financial statements for the year ended December 31, 2020, we identified certain errors, including a $3.0 million under-recognition of stock-based compensation expense and a $1.5 million over-recognition of licensing costs for the year ended December 31, 2020. We adjusted for these items in the first quarter of 2021 and the adjustments increased our net loss by approximately $1.5 million, or $0.06 per basic and diluted share, in our Condensed Consolidated Statements of Comprehensive Loss for the three months ended March 31, 2021. These items also increased our net loss by approximately $1.5 million, or $0.05 per basic and diluted share, on our Consolidated Statements of Comprehensive Loss for the year ended December 31, 2021. We evaluated the effects of these out-of-period adjustments, both qualitatively and quantitatively, and concluded that the errors and the correction thereof were immaterial both individually and in the aggregate to the current reporting period and the periods in which they originated, including quarterly reporting. Operating Segments – We report segment information based on how our chief executive officer, who is our chief operating decision maker (“CODM”), regularly reviews our operating results, allocates resources and makes decisions regarding our business operations. The performance measures of our segments include total revenue and profit (loss). Our business structure is comprised of two operating segments: •Medicare; and •Employer and Individual In the fourth quarter of 2023, the Individual, Family and Small Business segment was renamed “Employer and Individual” (“E&I”). The Employer and Individual segment name change was to the name only and had no impact on our historical financial position, results of operations, cash flow or segment level results previously reported. The Medicare segment consists primarily of commissions earned from our sale of Medicare-related health insurance plans, including Medicare Advantage, Medicare Supplement and Medicare Part D prescription drug plans, and to a lesser extent, ancillary products sold to our Medicare-eligible customers, including but not limited to, dental and vision insurance, as well as our advertising program that allows Medicare-related carriers to purchase advertising on a separate website developed, hosted and maintained by us or pursuant to which we perform other services as marketing and our delivery and sale to third parties of Medicare-related health insurance leads generated by our ecommerce platforms and our marketing activities. The E&I segment consists primarily of commissions earned from our sale of individual and family and small business health insurance plans and ancillary products sold to our non-Medicare-eligible customers, including but not limited to, dental, vision, short term disability and long-term disability insurance. To a lesser extent, the E&I segment includes amounts earned from our online sponsorship program that allows carriers to purchase advertising space in specific markets in a sponsorship area on our website, our licensing to third parties the use of our health insurance ecommerce technology and our delivery and sale to third parties of individual and family health insurance leads generated by our ecommerce platforms and our marketing activities. Marketing and advertising, customer care and enrollment, technology and content and general and administrative operating expenses that are directly attributable to a segment are reported within the applicable segment. Indirect marketing and advertising, customer care and enrollment and technology and content operating expenses are allocated to each segment based on usage. Other indirect general and administrative operating expenses are managed in a corporate shared services environment and, since they are not the responsibility of segment operating management, are not allocated to the two operating segments and are presented as a reconciling item to our consolidated financial results. Segment profit (loss) is calculated as total revenue for the applicable segment less direct and allocated marketing and advertising, customer care and enrollment, technology and content and general and administrative operating expenses, excluding stock-based compensation expense, depreciation and amortization expense, amortization of intangible assets and impairment, restructuring and other charges. Estimates and Judgments – The preparation of consolidated financial statements and related disclosures in conformity with U.S. GAAP requires management to make estimates, judgments and assumptions that affect the amounts reported and disclosed in the consolidated financial statements and accompanying notes. On an ongoing basis, we evaluate our estimates, including those related to, but not limited to, the fair value of investments, recoverability of intangible assets, the commissions we expect to collect for each approved member cohort, valuation allowance for deferred income taxes, provision for (benefit from) income taxes and the assumptions used in determining stock-based compensation. We base our estimates of the carrying value of certain assets and liabilities on historical experience and on various other assumptions that we believe to be reasonable. Actual results may differ from these estimates. Cash and Cash Equivalents – Our cash and cash equivalents were held in cash depository accounts with major financial institutions or invested in high quality, short-term liquid investments having original maturities of 90 days or less from the date of purchase. Cash and cash equivalents are stated at fair value. Our restricted cash balances are not material and are primarily used to collateralize letters of credit related to certain lease commitments. Property and Equipment – Property and equipment are stated at cost, less accumulated depreciation and amortization. Finance lease amortization expenses are included in depreciation expense in our Consolidated Statements of Comprehensive Loss. Maintenance and minor replacements are expensed as incurred. Depreciation and amortization expenses are computed using the straight-line method based on estimated useful lives as follows:
Computer equipment and software |  | 3 | to | 5 years
Office equipment and furniture |  | 5 years
Leasehold improvements* |  | 5 | to | 10 years
_______ *Lesser of useful life or related lease term See Note 3 – Supplemental Financial Statement Information of the Notes to Consolidated Financial Statements for additional information regarding our property and equipment. Leases – We account for leases in accordance with Accounting Standards Codification Topic 842, Leases. We determine if an arrangement is a lease at inception. Our lease portfolio is primarily composed of operating leases for corporate offices and are included in operating lease right-of-use (“ROU”) assets and lease liabilities on our Consolidated Balance Sheets. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and lease liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As the Company's leases generally do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date. In determining the present value of lease payments, we utilized the assistance of third-party specialists to assist us in determining our yield curve based upon our credit rating, lease term and adjustment for security. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. Goodwill and Intangible Assets – Goodwill represents the excess of the consideration paid over the estimated fair value of assets acquired and liabilities assumed in a business combination. Our goodwill is allocated among our two segments, (1) Medicare and (2) E&I. All of our goodwill resulting from our prior business combinations was allocated to the Medicare segment. Goodwill and intangible assets are considered non-financial assets and therefore, subsequent to their initial recognition are not revalued at fair value each reporting period unless an impairment charge is recognized. We test our goodwill for impairment on an annual basis in the fourth quarter of each year or whenever events or changes in circumstances indicate that the asset may be impaired. Factors that we consider in deciding when to perform an impairment test include significant negative industry or economic trends or significant changes or planned changes in our use of the intangible assets. As of December 31, 2021, we performed a goodwill impairment assessment, which included both qualitative and quantitative assessments. Our assessment included a comparison of carrying value to an estimated fair value using a market approach based on our market capitalization. Based on this assessment, we concluded the fair value of our Medicare segment was below the carrying value primarily due to the change in our market valuation and financial performance at the time and recorded a $40.2 million impairment of our goodwill, which was recognized in the “Impairment, restructuring and other charges” line in our Consolidated Statements of Comprehensive Loss. As a result of this impairment, we had no goodwill balance on our Consolidated Balance Sheets as of December 31, 2023 and 2022. We must make subjective judgments in determining the independent cash flows that can be related to specific asset groupings. In addition, we must make subjective judgments regarding the remaining useful lives of assets with finite useful lives. When we determine that the useful life of an asset is shorter than we had originally estimated, we accelerate the rate of amortization over the assets’ new, remaining useful life. Intangible assets are reviewed for impairment whenever events or changes in circumstances indicate a potential reduction in their fair values below their respective carrying amounts. Intangible assets with finite useful lives, which include purchased technology, pharmacy and customer relationships, trade names, and certain trademarks, are amortized over their estimated useful lives. See Note 3 – Supplemental Financial Statement Information of the Notes to Consolidated Financial Statements for additional information regarding our intangible assets and related impairment. Other Long-Lived Assets – We evaluate other long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the asset exceeds its fair value. Revenue Recognition – We account for revenue under ASC 606 – Revenue from Contracts with Customers. Our revenue consists of commission revenue and other revenue. The core principle of ASC 606 is to recognize revenue upon the transfer of promised goods or services to customers in an amount that reflects the consideration the entity expects to be entitled to in exchange for those goods or services. Accordingly, we recognize revenue for our services through the application of the following steps: •Identification of the contract, or contracts, with a customer. •Identification of the performance obligations in the contract. •Determination of the transaction price. •Allocation of the transaction price to the performance obligations in the contract. •Recognition of revenue when, or as, we satisfy a performance obligation. Commission Revenue. Our commission revenue results from approval of an application from health insurance carriers, which we define as our customers under ASC 606. Our commission revenue is primarily comprised of commissions from health insurance carriers which is computed using the estimated constrained lifetime value of commission payments that we expect to receive. We estimate commission revenue for each insurance product by using a portfolio approach to a group of approved members by plan type and the effective month of the relevant plan, which we refer to as “cohorts.” We recognize revenue for plans approved during the period by applying the latest estimated constrained lifetime value (“LTV”) for that product. We recognize adjustment revenue for plans approved in prior periods when changes in assumptions for constrained LTV calculations are made and when there is sufficient evidence demonstrating a trend that is different from the estimated constrained LTV at the time of approval resulting in a change in estimate to expected cash collections. Net adjustment revenue consists of increases in revenue for certain prior period cohorts as well as reductions in revenue for certain prior period cohorts. We recognize positive adjustments to revenue to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur. We assess the risk of significant revenue reversal based on statistical and qualitative analysis given historical information and current market conditions. Our commission revenue for each product line is based on a number of assumptions, which include, but are not limited to, estimating conversion of an approved member to a paying member, forecasting average plan duration and forecasting the commission amounts likely to be received per member. These assumptions are based on our analysis of historical trends for the different cohorts and incorporate management’s judgment in interpreting those trends and applying the constraints discussed below. For our Medicare commission revenue, which represented 89%, 88% and 86% of our total commission revenue for the years ended December 31, 2023, 2022 and 2021, respectively, the estimated average plan duration, which is the average length of time paying members are active on their plans, used to calculate Medicare health insurance plan LTVs has been approximately 2 to 3 years for Medicare Advantage plans, and approximately 4 to 5 years for both Medicare Supplement and Medicare Part D prescription drug plans. While the average plan duration has been approximately 2 to 3 years for Medicare Advantage plans, certain members can have a duration of up to approximately 14 years. The estimated average plan duration used to calculate the LTV for major medical individual and family health insurance plans has been approximately 1.5 to 2 years. For short term health insurance plan LTVs, the estimated average plan duration has been approximately six months. For all other ancillary health insurance plan LTVs, the estimated average plan duration has historically varied from 1 to 6 years. Constraints are applied to LTV for revenue recognition purposes to help ensure that the total estimated lifetime commissions expected to be collected for an approved member’s plan are recognized as revenue only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with future commissions receivable is subsequently resolved. Significant judgment can be involved in determining the constraint. To determine the constraints to be applied to LTV, we compare cash collection patterns to our assumptions and analyze the drivers for variations. We then apply judgment in assessing whether the variation between historical cash collections and LTV is representative of variations that can be expected in future periods. We also analyze whether circumstances have changed and consider any known or potential modifications to the inputs into LTV in light of the factors that can impact the amount of cash expected to be collected in future periods, including but not limited to commission rates, carrier mix, plan duration, cancellations of insurance plans offered by health insurance carriers with which we have a relationship, changes in laws and regulations, and changes in the economic environment. We evaluate the appropriateness of our constraints on an annual basis, at least, and update our assumptions when we observe a sufficient amount of evidence that would suggest that the long-term expectation underlying the assumptions has changed. We re-compute LTVs for all outstanding cohorts on a quarterly basis. We continually review and monitor changes in the data used to estimate LTV and compare the cash received for each cohort to our original estimates at the time of approval. The fluctuations of cash received for each cohort as compared to our estimates and the fluctuations in LTV can be significant and may or may not be indicative of the need to adjust revenue for prior period cohorts. Changes in LTV may result in an increase or a decrease to revenue and a corresponding increase or decrease to contract assets – commissions receivable. We analyze these fluctuations and, to the extent we see changes in our estimates of the cash commission collections that we believe are indicative of an increase or decrease to prior period LTVs, we adjust revenue for the affected cohorts at the time such determination is made and when it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur. As we accumulate more historical data, we continue to enhance our LTV estimation models using statistical tools to increase the accuracy of LTV estimates with an emphasis on improving member attrition forecasting. The enhancements to the LTV estimation model provide greater statistical certainty on expected cash collections, particularly for earlier period cohorts where there is more historical data available. In the first effective plan year of a Medicare Advantage and Medicare Part D prescription drug plan, for which we are the broker of record, we receive a fixed, annual commission payment from insurance carriers generally after the plan is approved by the carrier and becomes effective. If applicable, after the health insurance carrier approves the application but during the effective year of the plan, we are paid a fixed commission that is prorated for the number of months remaining in the calendar year. Additionally, if the plan is the first Medicare Advantage or Medicare Part D prescription drug plan issued to the member, we may receive a higher commission rate that covers a full 12-month period, regardless of the month the plan was effective. Beginning with the second plan year and for as long as the member remains on that plan, we typically receive fixed, monthly commissions for Medicare Advantage and Medicare Part D prescription drug plans and generally continue to receive commissions until either the plan is cancelled or we otherwise do not remain the agent on the plan. Our commissions also include regular administrative payments related to administrative services we perform. For individual and family, Medicare Supplement, small business and ancillary plans, our commissions generally represent a flat amount per member per month or a percentage of the premium amount collected by the carrier during the period that a member maintains coverage under a plan. Premium-based commissions are reported to us after the premiums are collected by the carrier, generally on a monthly basis. We generally continue to receive the commission payment from the relevant insurance carrier until the health insurance plan is cancelled or we otherwise do not remain the agent on the plan. For Medicare-related, individual and family and ancillary health insurance plans, our services are complete once a submitted application is approved by the relevant health insurance carrier. Accordingly, we recognize commission revenue based upon the total estimated lifetime commissions we expect to receive for selling the plan after the carrier approves an application, net of an estimated constraint. We refer to these as estimated and constrained LTVs for the plan. We provide annual services in selling and renewing small business health insurance plans; therefore, we recognize small business health insurance plan commission revenue at the time the plan is approved by the carrier, and when it renews each year thereafter, equal to the estimated commissions we expect to collect from the plan over the following 12 months. For our Medicare segment, our commissions may also include certain bonus payments, which are generally based on attaining predetermined target sales levels or other objectives, as determined by the health insurance carriers. See Note 2 – Revenue of the Notes to Consolidated Financial Statements for additional information regarding our commission revenue. Other Revenue. Our non-Medicare plan related sponsorship and advertising program allows carriers to purchase advertising space in specific markets in a sponsorship area on our website. In return, we are typically paid a fee, which is recognized over the period that advertising is displayed, and often a performance fee based on metrics such as submitted health insurance applications, which is recognized when the service has been performed. We also offer Medicare advertising and other services, which include, among other things, marketing and website development, hosting and maintenance. In these instances, we are typically paid a fixed, up-front fee, which we recognize as revenue ratably over the service period as service is performed. In certain arrangements, we facilitate beneficiary enrollment in Medicare-related health insurance plans with health insurance carriers without remaining the agent of record. Under these arrangements, we receive one-time fees determined by contract terms and our services are complete once a submitted application is approved by the relevant health insurance carrier. Accordingly, we recognize fee income based upon the fee we expect to receive for selling the plan after the carrier approves an application. We also generate revenue from agreements with carriers to perform post enrollment services for members in Medicare-related health insurance plans. We typically are paid a fixed fee upon completion of the specific service and the revenue is recognized in the period the service was completed. Our commercial technology licensing business allows carriers the use of our ecommerce platform to offer their own health insurance policies on their websites and agents to utilize our technology to power their online quoting, content and application submission processes. Typically, we are paid a one-time implementation fee, which we recognize on a straight-line basis over the estimated term of the customer relationship, and a performance fee based on metrics such as submitted health insurance applications. The performance fees are based on performance criteria. In instances where the performance criteria data is tracked by us, we recognize revenue in the period of performance and when all other revenue recognition criteria has been met. In instances where the performance criteria data is tracked by the third party, we recognize revenue when reversal of such amounts is probable to not occur. Incremental Costs to Obtain a Contract. Our sales compensation plans, which are directed at converting leads into approved members, represent fulfillment costs and not costs to obtain a contract with a customer. Additionally, we reviewed compensation plans related to personnel responsible for identifying new health insurance carriers and entering into contracts with new health insurance carriers and concluded that no incremental costs are incurred to obtain such contracts. Therefore, costs related these compensation plans are expensed as incurred. Deferred Revenue – Deferred revenue includes deferred fees and amounts billed to or collected from advertising, sponsorship or technology licensing customers in advance of our performing our service for such customers. It also includes the amount by which both unbilled and billed services provided under our technology licensing arrangements exceed the revenue recognized to date. Cost of Revenue – Included in cost of revenue are payments related to health insurance plans sold to members who were referred to our website by marketing partners with whom we have revenue-sharing arrangements. In order to enter into a revenue-sharing arrangement, marketing partners must be licensed to sell health insurance in the state where the policy is sold. Costs related to revenue-sharing arrangements are expensed as the related revenue is recognized. Marketing and Advertising Expenses – Marketing and advertising expenses consist primarily of member acquisition expenses associated with our direct marketing and marketing partner channels, in addition to compensation and other expenses related to marketing, business development, partner management, public relations and carrier relations personnel who support our offerings. We recognize direct marketing expenses in our direct member acquisition channel in the period in which they are incurred, including in the period in which the consumer clicks on the advertisement for direct online channels. Advertising costs incurred in the years ended December 31, 2023, 2022 and 2021 totaled $148.7 million, $169.1 million, and $240.4 million, respectively. Our direct channel expenses primarily consist of costs for direct mail, email marketing, paid keyword search advertising on search engines and paid social platforms, search engine optimization and television and radio advertising. Advertising costs for our direct channel are expensed the first time the related advertising takes place and in the period in which the consumer clicks on the advertisement for direct online channels. Our marketing partner channel expenses primarily consist of fees paid to marketing partners with which we have a relationship. Advertising costs for our marketing partner channel are expensed as incurred. Research and Development Expenses – Research and development expenses consist primarily of compensation and related expenses incurred for employees on our engineering and technical teams, which are expensed as incurred. Research and development costs, which totaled $13.7 million, $12.1 million and $10.4 million for the years ended December 31, 2023, 2022 and 2021, respectively, are primarily included in the “Technology and content expense” line in the accompanying Consolidated Statements of Comprehensive Loss. Internal-Use Software and Website Development Costs – We capitalize costs of materials, consultants and compensation and benefits costs of employees who devote time to the development of internal-use software and websites during the application development stage. The amortization expenses of these assets are recorded in technology and content. Our judgment is required in determining the point at which various projects enter the phases at which costs may be capitalized, in assessing the ongoing value of the capitalized costs and in determining the estimated useful lives over which the costs are amortized, which is generally 3 years. For the years ended December 31, 2023, 2022 and 2021, we capitalized internal-use software and website development costs of $9.7 million, $17.2 million and $19.6 million respectively, and recorded amortization expense of $17.4 million, $17.3 million, and $12.9 million, respectively. Capitalized internal-use software and website development costs are included in other assets on our Consolidated Balance Sheets and were $23.6 million and $31.3 million as of December 31, 2023 and 2022, respectively. See Note 5 - Equity of the Notes to Consolidated Financial Statements for the amount of stock-based compensation capitalized for internal-use software. Stock-Based Compensation – We grant stock-based awards to officers, certain other employees of the Company and non-employee directors of the Company. The stock-based awards have consisted of stock options, restricted stock units and performance-based stock units. We recognize stock-based compensation expense in the accompanying Consolidated Statements of Comprehensive Loss based on the fair value of our stock-based awards over their respective requisite service periods, typically the vesting period, which is generally four years for service-based awards for employees and one year for non-employee directors or the one-year anniversary of achieving performance criteria for performance-based awards. Stock Options. Our stock options have consisted of service, performance and market-based awards and have exercise prices equal to the market price of the underlying common shares on the date of grant and a term of seven years. The estimated grant date fair value of our stock options is estimated using the Black-Scholes option-pricing model and a single option award approach. The weighted-average expected term for stock options granted is calculated using historical option exercise behavior. The dividend yield is determined by dividing the expected per share dividend during the coming year by the grant date stock price. Through December 31, 2023, we had not declared or paid any cash dividends to common stockholders. We base the risk-free interest rate on the implied yield currently available on U.S. Treasury zero-coupon issues with a remaining term equal to the expected term of our stock options. Expected volatility is determined using a combination of the implied volatility of publicly traded options in our stock and historical volatility of our stock price. Restricted and Performance-Based Stock Units. Our restricted stock units consist of service-based awards. Our performance-based stock units are subject to certain performance metrics, which may be market-based or non-market-based financial metrics. Our market-based performance stock units are contingent upon the attainment of certain stock prices generally over a four-year performance period while non-market-based performance metrics are contingent upon attainment of certain financial performance metrics generally over a one-year performance period. Performance-based stock units vest on the one-year anniversary of the date of achievement, subject to the employee’s continued service through the vesting date. Each restricted and performance-based stock unit represents a contingent right to receive a share of our common stock upon predetermined criteria. The fair value for restricted and non-market-based performance stock units is estimated on the date of grant based on the current market price of our common shares. The grant date fair value of market-based performance stock awards is determined using the Monte-Carlo simulation model and requires the input of subjective assumptions. The weighted-average expected term is based on the likelihood of achievement using historical behavior. The dividend yield is based on our dividend payment history and expectation of future dividend payments. Through December 31, 2023, we had not declared or paid any cash dividends to common stockholders. We base the risk-free interest rate on the implied yield currently available on U.S. Treasury zero-coupon issues with a remaining term equal to the length of the remaining performance period. Expected volatility is determined using a combination of the implied volatility of publicly traded options in our stock and historical volatility of our stock price. The estimated attainment of performance-based awards and related expense are based on the achievement of certain financial targets over a predetermined performance period, subject to continued service through the vesting date and ultimately are subject to the discretion of the Company’s compensation committee. The assumptions used in calculating the fair value of stock-based payment awards and expected attainment of performance-based awards represent our best estimates, but these estimates involve inherent uncertainties and the application of management judgment. We will continue to use judgment in evaluating the expected term and volatility related to our own stock-based awards on a prospective basis and incorporating these factors into the model. Changes in key assumptions could significantly impact the valuation of such instruments. Forfeiture Rate. We estimate a forfeiture rate to calculate the stock-based compensation for all of our awards. We evaluate the appropriateness of the forfeiture rate based on historical forfeiture, analysis of employee turnover, and other factors. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Earnings (Loss) Per Share – Our Series A Preferred Stock is considered a participating security which requires the use of the two-class method for the computation of basic and diluted per share amounts. Under the two-class method, earnings available to common stockholders for the period are allocated between common stockholders and participating securities according to dividends accumulated and participation rights in undistributed earnings. Net loss attributable to common stockholders is not allocated to the convertible preferred stock as the holder of the Series A Preferred Stock does not have a contractual obligation to share in losses. Basic net loss attributable to common stockholders per share is computed by dividing net loss available to common stockholders by the weighted-average number of shares of common stock outstanding for the period. Diluted net loss attributable to common stockholders per share is computed by dividing the net loss available to common stockholders for the period by the weighted average number of common and common equivalent shares outstanding during the period. Diluted net loss attributable to common stockholders per share reflects all potential dilutive common stock equivalent shares, including conversion of preferred stock, stock options, restricted stock units and shares to be issued under our employee stock purchase program. 401(k) Plan – Our Board of Directors adopted a defined contribution retirement plan (“401(k) Plan”) in 1998, which qualifies under Section 401(k) of the Internal Revenue Code of 1986. Participation in the 401(k) Plan is available to substantially all employees in the United States. Employees may contribute up to 85% of their salary, subject to applicable annual Internal Revenue Code limits and are permitted to make both pre-tax and after-tax contributions. Employee contributions are fully vested when contributed. We contribute a maximum of 100% of the first 3% of compensation a participant contributes to the 401(k) Plan, which vests immediately. Our matching contributions to the 401(k) Plan are discretionary and are expensed as incurred. We recognized expense of $3.6 million, $3.8 million and $4.2 million for the years ended December 31, 2023, 2022 and 2021, respectively, related to 401(k) matching contributions. Income Taxes – We account for income taxes using the liability method. Deferred income taxes are determined based on the differences between the financial reporting and tax bases of assets and liabilities, using enacted statutory tax rates in effect for the year in which the differences are expected to reverse. We utilize a two-step approach for evaluating uncertain tax positions. Step one, Recognition, requires a company to determine if the weight of available evidence indicates that a tax position is more likely than not to be sustained upon audit, including resolution of related appeals or litigation processes, if any. Step two, Measurement, is based on the largest amount of benefit, which is more likely than not to be realized on ultimate settlement. We record interest and penalties related to uncertain tax positions as income tax expense in the consolidated financial statements. Recently Adopted Accounting Pronouncements We did not adopt any new accounting pronouncements during the year ended December 31, 2023. Recently Issued Accounting Pronouncements Not Yet Adopted Segment Reporting (Topic 280) — In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This ASU updates reportable segment disclosure requirements by requiring disclosures of significant reportable segment expenses that are regularly provided to the CODM and included within each reported measure of a segment’s profit or loss. The ASU is effective for fiscal years beginning after December 15, 2023 and interim periods beginning after December 15, 2024. Adoption of the ASU should be applied retrospectively to all prior periods presented in the financial statements and early adoption is permitted. We are currently evaluating the impact of adopting this ASU on our consolidated financial statements and related disclosures. Income Taxes (Topic 740) — In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740) Improvements to Income Tax Disclosures, which requires public entities, on an annual basis, to provide disclosure of specific categories in the rate reconciliation, as well as additional disclosure on income taxes paid. The ASU is effective on a prospective basis for fiscal years beginning after December 15, 2024 for public entities and early adoption is permitted. We are currently evaluating the impact of adopting of this ASU on our consolidated financial statements and related disclosures.

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for all significant accounting policies of the reporting entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483426/235-10-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 235 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//235/tableOfContent + Details
Name: | us-gaap_SignificantAccountingPoliciesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration