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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | 12 Months Ended
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Dec. 31, 2024
Accounting Policies [Abstract] |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES PRINCIPLES OF CONSOLIDATION – The operating activities of subsidiaries are included in the accompanying consolidated financial statements (“financial statements”) from the date of acquisition. Investments in companies in which we have the ability to exercise significant influence, but not control, are accounted for by the equity method. All intercompany transactions and balances, with our consolidated entities and the unsettled amount of intercompany transactions with our equity method investees, have been eliminated in consolidation. As stated in Note 1 above, the Consolidated Medical Group consists of VIEs and we consolidate the operating activities and balance sheets of each. USE OF ESTIMATES - The financial statements have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP"), which requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. These estimates and assumptions affect various matters, including our reported amounts of assets and liabilities in our consolidated balance sheets at the dates of the financial statements; our disclosure of contingent assets and liabilities at the dates of the financial statements; and our reported amounts of revenues and expenses in our consolidated statements of operations during the reporting periods. These estimates involve judgments with respect to numerous factors that are difficult to predict and are beyond management’s control. As a result, actual amounts could materially differ from these estimates. REVENUES – Our revenues generally relate to net patient fees received from various payors and patients themselves under contracts in which our performance obligations are to provide diagnostic services to the patients. Revenues are recorded during the period when our obligations to provide diagnostic services are satisfied. Our performance obligations for diagnostic services are generally satisfied over a period of less than one day. The contractual relationships with patients, in most cases, also involve a third-party payor (e.g., Medicare, Medicaid, managed care health plans and commercial insurance companies, including plans offered through the health insurance exchanges) and the fees for the services provided are dependent upon the terms provided by Medicare and Medicaid, or negotiated with managed care health plans and commercial insurance companies. The payment arrangements with third-party payors for the services we provide to the related patients typically specify payments at amounts less than our standard charges and generally provide for payments based upon predetermined rates per diagnostic services or discounted fee-for-service rates. Management continually reviews the contractual estimation process to consider and incorporate updates to laws and regulations and the frequent changes in managed care contractual terms resulting from contract renegotiations and renewals. As it relates to the Consolidated Medical Group, this service fee revenue includes payments for both the professional medical interpretation revenue recognized by the Consolidated Medical Group as well as the payment for all other aspects related to our providing the imaging services, for which we earn management fees. As it relates to other centers, this service fee revenue is earned through providing the use of our diagnostic imaging equipment and the provision of technical services as well as providing administration services such as clerical and administrative personnel, bookkeeping and accounting services, billing and collection, provision of medical and office supplies, secretarial, reception and transcription services, maintenance of medical records, and advertising, marketing and promotional activities. Our service fee revenues are based upon the estimated amounts we expect to be entitled to receive from patients and third-party payors. Estimates of contractual allowances under managed care and commercial insurance plans are based upon the payment terms specified in the related contractual agreements. Revenues related to uninsured patients and co-payment and deductible amounts for patients who have health care coverage may have discounts applied (uninsured discounts and contractual discounts). We also record estimated implicit price concessions (based primarily on historical collection experience) related to uninsured accounts to record self-pay revenues at the estimated amounts we expect to collect. Under capitation arrangements with various health plans, we earn a per-enrollee amount each month for making available diagnostic imaging services to all plan enrollees under the capitation arrangement. Revenue under capitation arrangements is recognized in the period in which we are obligated to provide services to plan enrollees under contracts with various health plans. Our total revenues for the years ended December 31, 2024, 2023, and 2022 are presented in the table below. Our patient service revenue is displayed as the estimated service fee, broken down by classification of insurance coverage type, along with revenue generated from our management services and other sources such as software and AI..
In Thousands | 2024 |  | 2023 |  | 2022
Commercial insurance | $ | 1,018,327 |  |  | $ | 879,792 |  |  | $ | 769,753 |
Medicare | 410,072 |  |  | 356,506 |  |  | 305,031 |
Medicaid | 44,736 |  |  | 42,302 |  |  | 37,530 |
Workers' compensation/personal injury | 43,666 |  |  | 46,406 |  |  | 50,333 |
Other payors | 104,888 |  |  | 87,675 |  |  | 65,911 |
Management fee revenue | 24,676 |  |  | 17,936 |  |  | 22,235 |
Other revenue | 46,724 |  |  | 32,580 |  |  | 27,223 |
Revenue under capitation arrangements | 136,575 |  |  | 153,433 |  |  | 152,045 |
Total revenue | $ | 1,829,664 |  |  | $ | 1,616,630 |  |  | $ | 1,430,061 |
ACCOUNTS RECEIVABLE – Substantially all of our accounts receivable are due under fee-for-service contracts from third party payors, such as insurance companies and government-sponsored healthcare programs, or directly from patients. Services are generally provided pursuant to one-year contracts with healthcare providers. We continuously monitor collections from our payors and maintain an allowance for credit losses based upon specific payor collection issues that we have identified and our historical experience. We have entered into factoring agreements with various institutions and sold certain accounts receivable under non-recourse agreements in exchange for notes receivables from the buyers. These transactions are accounted for as a reduction in accounts receivable as the agreements transfer effective control over and risk related to the receivables to the buyers. Proceeds on notes receivables are reflected as operating activities on our statement of cash flows and on our balance sheet as prepaid expenses and other current assets for the current portion and deposits and other for the long-term portion. Amounts remaining to be collected on these agreements were $4.2 million and $14.3 million at December 31, 2024 and 2023, respectively. We do not utilize factoring arrangements as an integral part of our financing for working capital and assess the party's ability to pay upfront at the inception of the notes receivable and subsequently by reviewing their financial statements annually and reassessing any insolvency risk on a periodic basis. ACCOUNTS PAYABLE AND ACCRUED EXPENSES - Accounts payable and accrued expenses were comprised of the following (in thousands):
| December 31,
| 2024 |  | 2023
Accounts payable | $ | 96,450 |  |  | $ | 122,888 |
Accrued expenses | 153,252 |  |  | 124,059 |
Accrued salary and benefits | 68,242 |  |  | 71,297 |
Accrued professional fees | 33,520 |  |  | 24,696 |
Total | $ | 351,464 |  |  | $ | 342,940 |
SOFTWARE REVENUE RECOGNITION – We have developed and sell Picture Archiving Communications Systems (“PACS”) and related services. The PACS sales are made primarily through our sales force and generally include hardware, software, installation, training and first-year warranty support. Hardware, which is not unique or special purpose, is purchased from a third-party and resold to customers with a small mark-up. We have determined that our core software products, such as PACS, are essential to most of our arrangements as hardware, software and related services are sold as an integrated package. Revenue is recognized when a performance obligation is satisfied by transferring a promised good or service to a customer. For the years ended December 31, 2024, 2023, and 2022, we recorded approximately $27.8 million, $20.2 million, and $13.2 million, respectively, in revenue related to our software business which is included in service fee revenue in our consolidated statements of operations. At December 31, 2024 we had deferred revenue of approximately $1.2 million associated with these sales which we expect to recognize into revenue over the next 12 months. SOFTWARE DEVELOPMENT COSTS – When we develop our own software and artificial intelligence solutions we capitalize and amortize those costs over their useful life of 1 to 12 years. Costs related to the research and development of new software products and enhancements to existing software intended for resale to our customers are expensed as incurred. CONCENTRATION OF CREDIT RISKS – Financial instruments that potentially subject us to credit risk are primarily cash equivalents and accounts receivable. We have placed our cash and cash equivalents with one major financial institution. The cash in the financial institution is in excess of the amount insured by the Federal Deposit Insurance Corporation, or FDIC. Substantially all of our accounts receivable are due under fee-for-service contracts from third party payors, such as insurance companies and government-sponsored healthcare programs, or directly from patients. We continuously monitor collections and maintain an allowance for credit losses based upon our historical collection experience. In addition, we have notes receivable stemming from our factoring of accounts receivable as stated above. CASH AND CASH EQUIVALENTS – We consider all highly liquid investments that mature in three months or less when purchased to be cash equivalents. The carrying amount of cash and cash equivalents approximates the fair market value. DEFERRED FINANCING COSTS – Costs of financing are deferred and amortized using the effective interest rate method. Deferred financing costs are related to our revolving credit facilities. Deferred financing costs, net of accumulated amortization, were $2.3 million and $1.6 million as of December 31, 2024 and 2023, respectively. See Note 8, Credit Facilities and Notes Payable for more information on our revolving lines of credit. PROPERTY AND EQUIPMENT – Property and equipment are stated at cost, less accumulated depreciation and amortization. Depreciation and amortization of property and equipment are provided using the straight-line method over their estimated useful lives, which range from 3 to 15 years. Leasehold improvements are amortized at the lesser of the lease term or their estimated useful lives, which range from 3 to 15 years. Maintenance and repairs are charged to expense as incurred. BUSINESS COMBINATIONS – When the qualifications for business combination accounting treatment are met, it requires us to recognize separately from goodwill the assets acquired and the liabilities assumed at their acquisition date fair values. Goodwill as of the acquisition date is measured as the excess of consideration transferred over the net of the acquisition date fair values of the assets acquired and the liabilities assumed. While we use our best estimates and assumptions to accurately value assets acquired and liabilities assumed at the acquisition date, our estimates are inherently uncertain and subject to refinement. As a result, during the measurement period, which may be up to one year from the acquisition date, we record adjustments to the assets acquired and liabilities assumed with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to our consolidated statements of operations. GOODWILL AND INDEFINITE LIVED INTANGIBLES – Goodwill totaled $710.7 million and $679.5 million at December 31, 2024 and 2023, respectively. Indefinite lived intangible assets were $13.0 million at December 31, 2024 and $9.0 million at 2023 and are associated with the value of certain trade name intangibles and in process research and development ("IPR&D"). Goodwill, trade name intangibles and IPR&D are recorded as a result of business combinations. If we determine that the carrying value of a reporting unit exceeds its fair value, an impairment charge equal to such excess, not to exceed the total amount of goodwill allocated to that reporting unit, is recognized. We determine fair values for each of the reporting units using the market approach, when available and appropriate, or the income approach, or a combination of both. We assess the valuation methodology based upon the relevance and availability of the data at the time we perform the valuation. If multiple valuation methodologies are used, the results are weighted appropriately. We tested goodwill, trade name and IPR&D for impairment on October 1, 2024. In September 2023, we determined that an IPR&D indefinite-lived intangible asset related to Aidence's Ai Veye Lung Nodule and Veye Clinic would not receive FDA authorizations for sale in the US without a new submission and additional expenditures for rework in the original projected timeline. The additional expenditures, delay and reduction of US sales affected the estimated fair value of the related IPR&D intangible asset and resulted in impairment charges of $3.9 million within Cost of operations in our Consolidated Statements of Operations. The estimated fair value of the IPR&D intangible asset was determined using the multi-period excess earnings method under the income approach, which estimates the present value of the free cash flows associated with the asset and tax amortization benefit to arrive at the fair value of the asset. Our annual impairment test as of October 1, 2024 noted no other impairment, and we have not identified any indicators of impairment through December 31, 2024. LONG-LIVED ASSETS – We evaluate our long-lived assets (property and equipment) and intangibles, other than goodwill and indefinite lived intangible assets, for impairment when events or changes indicate the carrying amount of an asset may not be recoverable. Accounting standards require that if the sum of the undiscounted expected future cash flows from a long-lived asset or definite-lived intangible is less than the carrying value of that asset, an asset impairment charge must be recognized. The amount of the impairment charge is calculated as the excess of the asset’s carrying value over its fair value, which generally represents the discounted future cash flows from that asset or in the case of assets we expect to sell, at fair value less costs to sell. For the years ended December 31, 2024 and 2023, we recorded lease abandonment of $0.7 million and $2.5 million, respectively pertaining to leasehold improvements at facilities that we shut down. See the Leases discussion below for more information. Other than this, we determined that there were no events or changes in circumstances that indicated our long-lived assets were impaired during any periods presented. INCOME TAXES – Income tax expense is computed using an asset and liability method and using expected annual effective tax rates. Under this method, deferred income tax assets and liabilities result from temporary differences in the financial reporting bases and the income tax reporting bases of assets and liabilities. The measurement of deferred tax assets is reduced, if necessary, by the amount of any tax benefit that, based on available evidence, is not expected to be realized. When it appears more likely than not that deferred taxes will not be realized, a valuation allowance is recorded to reduce the deferred tax asset to its estimated realizable value. For net deferred tax assets we consider estimates of future taxable income in determining whether our net deferred tax assets are more likely than not to be realized. See Note 10, Income Taxes, for more information. LEASES - We determine if an arrangement is a lease at inception. Operating leases are included in operating lease right-of-use (“ROU”) assets, current operating lease liabilities, and long term operating lease liability in 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 liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases 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 use the implicit rate when readily determinable. We include options to extend a 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. For a contract in which we are a lessee that contains fixed payments for both lease and non-lease components, we have elected to account for the components as a single lease component, as permitted. ROU assets are tested for impairment if circumstances suggest that the carrying amount may not be recoverable. No events have occurred such as fire, flood, or other acts which have impaired the integrity of our ROU assets as of December 31, 2024. Our facility leases require us to maintain insurance policies which would cover major damage to our facilities. We maintain business interruption insurance to cover loss of business due to a facility becoming non-operational under certain circumstances. Our equipment leases are covered by warranty and service contracts which cover repairs and provide regular maintenance to keep the equipment in functioning order. We closely monitor patient levels at our imaging centers and occasionally divest or shut down centers to maximize utilization rates. We may abandon low utilization leases and divert the patients to nearby centers. During the years ended 2024 and 2023, we experienced lower utilization at various imaging centers which resulted in the closure of these locations and the recognition of lease abandonment charges of approximately $2.5 million and $5.1 million at December 31, 2024 and 2023, respectively in our Imaging Center segment. Of these amounts, $1.8 million and $2.7 million were related to right-of-use assets impairment and $0.7 million and $2.5 million were related to the write-off of leasehold improvements for the years ending December 31, 2024 and 2023, respectively. UNINSURED RISKS – We maintain a high-deductible workers’ compensation insurance policy. We have recorded liabilities of $5.6 million and $3.4 million at December 31, 2024 and 2023, respectively, for the estimated future cash obligations associated with the unpaid portion of the workers compensation claims incurred. We and our affiliated physicians carry an annual medical malpractice insurance policy that protects us for claims that are filed during the policy year and that fall within policy limits. The policy has a deductible which is $10,000 per incidence for all years covered by this report. In order to eliminate the exposure for claims not reported during the regular malpractice policy period, we have purchased a medical malpractice claims made tail policy, which provides coverage for any claims reported in the event that our medical malpractice policy expires. As of December 31, 2024, this policy remained in effect. We have entered into an arrangement with Blue Shield to administer and process claims under a self-insured plan that provides health insurance coverage for our employees and dependents. We have recorded liabilities as of December 31, 2024 and 2023 of $7.8 million and $7.2 million, respectively, for the estimated future cash obligations associated with the unpaid portion of the medical and dental claims incurred by our participants. Additionally, we entered into an agreement with Blue Shield for a stop loss policy that provides coverage for any claims that exceed $250,000 up to a maximum of $1.0 million in order for us to limit our exposure for unusual or catastrophic claims. EMPLOYEE BENEFIT PLAN – We adopted a profit-sharing/savings plan pursuant to Section 401(k) of the Internal Revenue Code that covers substantially all non-professional employees. Eligible employees may contribute on a tax-deferred basis a percentage of compensation, up to the maximum allowable under tax law. Employee contributions vest immediately. We can elect to provide a matching contribution in the amount to a maximum of 1.0% per 4.0% of employee contributions. We contributed $3.6 million and $3.3 million in matching for the years ended December 31, 2024 and 2023. EQUITY BASED COMPENSATION – We have one long-term incentive plan that we adopted in 2006 and which we amended and restated at various points in time: first on April 20, 2015, second on March 9, 2017, third on April 15, 2021 and currently as of April 27, 2023 (the “Restated Plan”). The Restated Plan was most recently approved by our stockholders at our annual stockholders meeting on June 7, 2023. We have reserved 20,100,000 shares of common stock for issuance under the Restated Plan which can be issued in the form of incentive and/or nonstatutory stock options, restricted and/or unrestricted stock, stock units, and stock appreciation rights. Terms and conditions of awards can be direct grants or based on achieving a performance metric. We evaluate performance-based awards to determine if it is probable that the vesting conditions will be met. We also consider probability of achievement of performance conditions when determining expense recognition. For the awards where vesting is probable, equity-based compensation is recognized over the related vesting period. Stock options generally vest over 3 years to five years and expire 5 years to ten years from date of grant. We determine the compensation expense for each stock option award using the Black Scholes, or similar, valuation model. Those models require that our management make certain estimates concerning risk free interest rates and volatility in the trading price of our common stock. The compensation expense recognized for all equity-based awards is recognized over the awards’ service periods. Equity-based compensation is classified in operating expenses within the same line item as the majority of the cash compensation paid to employees. In connection with our acquisition of DeepHealth Inc. on June 1, 2020, we assumed the DeepHealth, Inc. 2017 Equity Incentive Plan, including outstanding options awards that can be exercised for our common stock. No additional awards will be granted under the DeepHealth, Inc. 2017 Equity Incentive Plan. See Note 11, Stock-Based Compensation, for more information. FOREIGN CURRENCY TRANSLATION – For our operations in Canada, Europe and the United Kingdom, the functional currency of our foreign subsidiaries is the local currency. Assets and liabilities denominated in foreign currencies are translated using the exchange rate at the balance sheet dates. Revenues and expenses are translated using average exchange rates prevailing during the reporting period. Any translation adjustments resulting from this process are shown separately as a component of accumulated other comprehensive loss. Gains and losses related to the foreign currency portion of international transactions are included in the determination of net income. The following is a reconciliation of Foreign Currency Translation amounts for the years ended December 31, 2024, 2023 and 2022 is provided below (in thousands):
|  | Currency Translation
Balance as of Balance as of December 31, 2021 |  | $ | (442) |
Currency Translation Adjustments |  | (3,943) |
Balance as of Balance as of December 31, 2022 |  | (4,385) |
Currency Translation Adjustments |  | 4,617 |
Balance as of Balance as of December 31, 2023 |  | 232 |
Currency Translation Adjustments |  | (5,929) |
Balance as of Balance as of December 31, 2024 |  | $ | (5,697) |
OTHER COMPREHENSIVE INCOME (LOSS) – Accounting guidance establishes rules for reporting and displaying other comprehensive income (loss) ("OCI") and its components. Our foreign currency translation adjustments and the amortization of balances associated with derivatives previously classified as cash flow hedges are included in OCI. The components of OCI for the years ended December 31, 2024, 2023, and 2022 are included in the consolidated statements of comprehensive income. INTEREST ON SECURITIES - We recognized income from interest on securities of approximately $31.4 million and $10.9 million for the year ended December 31, 2024 and 2023, respectively. This income is recorded within Other non-operating income in our Consolidated Statements of Operations. COMMITMENTS AND CONTINGENCIES - We are party to various legal proceedings, claims, and regulatory, tax or government inquiries and investigations that arise in the ordinary course of business. With respect to these matters, we evaluate the developments on a regular basis and accrue a liability when we believe a loss is probable and the amount can be reasonably estimated. Based on current information, we do not believe that reasonably possible or probable losses associated with pending legal proceedings would either individually or in the aggregate, have a material adverse effect on our business and consolidated financial statements. However, the outcome of these matters is inherently uncertain. Therefore, if one or more of these matters were resolved against us for amounts in excess of management's expectations, our results of operations and financial condition, including in a particular reporting period in which any such outcome becomes probable and estimable, could be materially adversely affected. DERIVATIVE INSTRUMENTS 2019 swaps: In the second quarter of 2019, we entered into four forward interest rate agreements ("2019 swaps"). The 2019 swaps have total notional amounts of $500,000,000, consisting of two agreements of $50,000,000 each and two agreements of $200,000,000 each. The 2019 swaps will secure a constant interest rate associated with portions of our variable rate bank debt and have an effective date of October 13, 2020. They matured in October 2023 for the two smaller notional and will mature in October 2025 for the two larger notional. Under these arrangements, we arranged the 2019 swaps with locked in 1 month Term Secured Overnight Financing Rate ("SOFR") rates at 1.89% for the $100,000,000 notional and at 1.98% for the $400,000,000 notional. In October of 2023, the two agreements of $50,000,000 each matured and the remaining 2019 swaps have a total notional amount of $400,000,000 as of December 31, 2024. As of the effective date, we are liable for premium payments if interest rates decline below arranged rates but receive interest payments if rates remain above the arranged rates. At inception, we designated our 2019 Swaps as cash flow hedges of floating-rate borrowings. In accordance with accounting guidance, derivatives that have been designated and qualify as cash flow hedging instruments are reported at fair value. The gain or loss on the effective portion of the hedge (i.e. change in fair value) is reported as a component of other accumulated comprehensive loss in the consolidated statement of equity. The remaining gain or loss, if any, is recognized currently in earnings. The cash flows for both our $400,000,000 notional interest rate swap contract locked in at 1.98% due October 2025 and our $100,000,000 notional interest rate swap contract locked in at 1.89% did not match the cash flows for our Barclays term loans and so we determined that they were not currently effective as cash flow hedges. Accordingly, all changes in their fair value after April 1, 2020 for the $400,000,000 notional and after July 1, 2020 for the $100,000,000 notional was recognized in earnings. As of July 1, 2020, the total change in fair value relating to swaps included in other comprehensive income was approximately $24.4 million, net of taxes. This amount will be amortized to interest expense through October 2023 at approximately $0.4 million per month and continuing at approximately $0.3 million per month through October 2025. A tabular presentation of the effect of derivative instruments on our other comprehensive income of the 2019 Swaps which remain ineffective is as follows (amounts in thousands):
For the years ended |  | Account |  | Beginning Balance |  | Amount of comprehensive loss recognized on derivative net of taxes |  | Amount of loss reclassified out of accumulated OCI into income (prior period effective portion), net of taxes* |  | Ending Balance |  |
December 31, 2024 |  | Accumulated Other Comprehensive Loss, net of taxes |  | $ | (11,625) |  |  | $ | — |  |  | $ | 9,352 |  |  | $ | (2,273) |  |  |
December 31, 2023 |  | Accumulated Other Comprehensive Loss, net of taxes |  | $ | (15,201) |  |  | $ | — |  |  | $ | 3,576 |  |  | $ | (11,625) |  |  |
December 31, 2022 |  | Accumulated Other Comprehensive Loss, net of taxes |  | $ | (18,888) |  |  | $ | — |  |  | $ | 3,687 |  |  | $ | (15,201) |  |  |
*Net of taxes of $3.0 million, $1.4 million and $1.3 million for the years ended December 31, 2024, 2023, and 2022, respectively. A tabular presentation of the effect of derivative instruments on our statement of operations of the 2019 Swaps for the Swaps that became ineffective in 2020 is as follows (amounts in thousands):
For the year ended | Amount of gain (loss) recognized in income on derivative (current period ineffective portion) | Location of gain (loss) recognized in Income on derivative (current period ineffective portion) | Amount of loss reclassified from accumulated other comprehensive income (loss) into income (prior period effective portion) | Net receipts (payments) associated with swap | Location of loss reclassified from accumulated other comprehensive income (loss) into income (prior period effective portion) and net receipts (payments) associated with swap
December 31, 2024 | $(8,006) | Non-cash change in fair value of interest rate swaps | $(9,352) | $13,126 | Interest Expense
December 31, 2023 | $(8,185) | Non-cash change in fair value of interest rate swaps | $(3,576) | $14,541 | Interest Expense
December 31, 2022 | $39,621 | Non-cash change in fair value of interest rate swaps | $(3,687) | $(2,826) | Interest Expense
Net receipts (payments) associated with swap are reported as operating activities in the statement of cash flows. Contingent Consideration: Aidence Holding B.V. On January 20, 2022, we completed our acquisition of all the equity interests of Aidence Holding B.V. ("Aidence"), an artificial intelligence enterprise centered on lung cancer screening. As part of the purchase agreement, we agreed to pay up to $10.0 million consideration upon the completion of two identified milestones in RadNet common shares or cash at our election. The fair value is based on the yield rate of S&P B-rated corporate bonds and the probability of meeting the milestones which were tied to FDA authorizations of artificial intelligence screening solutions. In September 2023, we determined that the milestones could not be achieved under the contractual terms of the stock purchase agreement because the original submissions of artificial intelligence screening solutions did not receive regulatory clearance. A new submission would be required; and therefore, the probability of the milestones being achieved became zero. Accordingly, we recognized a gain of $7.2 million in 2023 representing the change in fair value of contingent consideration within Cost of operations in our Consolidated Statements of Operations. In addition, there was a general holdback of $4.0 million for any indemnification claims, which was settled on April 30, 2023 by the issuance of 144,227 shares of our common stock. Quantib B.V. On January 20, 2022, we completed our acquisition of all the equity interests of Quantib B.V. ("Quantib"), an artificial intelligence enterprise centered on prostate cancer screening. As part of the purchase agreement, we agreed to issue 18 months after acquisition, 113,303 shares of our common stock with an initial fair value at the date of close of $3.0 million subject to adjustment for any indemnification claims. In addition, there is a general holdback of $1.6 million to be issued in cash subject to adjustment for any indemnification claims. On July 7, 2023, we settled the stock holdback contingent liabilities by issuing 113,303 shares of our common stock at an ascribed value of $3.5 million and also settled the general holdback for $1.6 million in cash. Montclair. On October 1, 2022, we completed our acquisition of Montclair Radiological Associates ("Montclair"). As part of the purchase agreement, we recorded $1.2 million in contingent consideration which was based on the anticipated achievement of specific EBITDA targets within a defined time frame. In June 2023, we determined that the contingent consideration thresholds were not achieved and, as such, we recognized a gain of $1.2 million representing the change in fair value of the contingent consideration within Cost of operations in our Consolidated Statements of Operations. The HLH Imaging Group Limited fka Heart and Lung Imaging Limited. On November 1, 2022, we completed our acquisition of 75% of the equity interests of Heart & Lung Imaging Limited. The purchase included $10.2 million in contingent milestone consideration and a cash holdback of $0.6 million to be issued 24 months after acquisition subject to adjustment for any indemnification claims. The milestone contingencies had a value of approximately $0 and $6.2 million as of December 31, 2024 and 2023, respectively. The contingent consideration is determined by the achievement of a specific number of physician reads. On September 20, 2023, we settled a milestone contingent liability by issuing 56,600 shares of our common stock at an ascribed value of $1.6 million and cash of $1.8 million. On December 12, 2023, we settled a milestone contingent liability by issuing 64,569 shares of our common stock at an ascribed value of $2.3 million and cash of $2.1 million. On March 27, 2024, we partially settled a milestone contingent liability by issuing 95,019 shares of our common stock at an ascribed value of $4.6 million. On April 1, 2024, we settled the remaining milestone contingent liability in cash of $3.6 million. On November 6, 2024, we settled the remaining holdback in cash of $0.6 million. We recognized a loss of $1.1 million and $2.5 million for the year ended December 31, 2024 and 2023, respectively, representing the change in fair value of the contingent consideration within Cost of operations in our Consolidated Statements of Operations. A tabular roll-forward of contingent consideration is as follows (amounts in thousands):
For the year ended December 31, 2024
Entity |  | Account |  | December 31, 2023 Balance |  | Settlement of Contingent Consideration |  | Change in Valuation of Contingent Consideration |  | Currency Translation |  | December 31, 2024 Balance |  |
Heart & Lung Limited |  | Accrued Expenses & Other Long Term Liabilities |  | $ | 6,242 |  |  | $ | (8,221) |  |  | $ | 1,060 |  |  | $ | 919 |  |  | $ | — |  |  |
For the year ended December 31, 2023
Entity |  | Account |  | January 1, 2023 Balance |  | Settlement of Contingent Consideration |  | Change in Valuation of Contingent Consideration |  | Currency Translation |  | December 31, 2023 Balance |  |
Aidence |  | Other Long Term Liabilities |  | $ | 7,158 |  |  | $ | — |  |  | $ | (7,158) |  |  | $ | — |  |  | $ | — |  |  |
Quantib |  | Accrued Expenses & Other Long Term Liabilities |  | $ | 2,134 |  |  | $ | (3,535) |  |  | $ | 1,401 |  |  | $ | — |  |  | $ | — |  |  |
Montclair |  | Accrued Expenses |  | $ | 1,200 |  |  | $ | — |  |  | $ | (1,200) |  |  | $ | — |  |  | $ | — |  |  |
Heart & Lung Limited |  | Accrued Expenses & Other Long Term Liabilities |  | $ | 11,053 |  |  | $ | (7,854) |  |  | $ | 2,476 |  |  | $ | 567 |  |  | $ | 6,242 |  |  |
For the year ended December 31, 2022 |
Entity |  |  |  | January 1, 2022 Balance |  | Addition |  | Change in Valuation of Contingent Consideration |  | Currency Translation |  | December 31, 2022 Balance |
Aidence |  |  |  | $ | — |  |  | $ | 7,477 |  |  | $ | (362) |  |  | $ | 43 |  |  | $ | 7,158 |  |
Quantib |  |  |  | $ | — |  |  | $ | 3,019 |  |  | $ | (903) |  |  | $ | 18 |  |  | $ | 2,134 |  |
Montclair |  |  |  | $ | — |  |  | $ | 1,200 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,200 |  |
Heart & Lung Limited |  |  |  | $ | — |  |  | $ | 10,225 |  |  | $ | 566 |  |  | $ | 262 |  |  | $ | 11,053 |  |
FAIR VALUE MEASUREMENTS – Assets and liabilities subject to fair value measurements are required to be disclosed within a fair value hierarchy. The fair value hierarchy ranks the quality and reliability of inputs used to determine fair value. Accordingly, assets and liabilities carried at, or permitted to be carried at, fair value are classified within the fair value hierarchy in one of the following categories based on the lowest level input that is significant to a fair value measurement: Level 1—Fair value is determined by using unadjusted quoted prices that are available in active markets for identical assets and liabilities. Level 2—Fair value is determined by using inputs other than Level 1 quoted prices that are directly or indirectly observable. Inputs can include quoted prices for similar assets and liabilities in active markets or quoted prices for identical assets and liabilities in inactive markets. Related inputs can also include those used in valuation or other pricing models such as interest rates and yield curves that can be corroborated by observable market data. Level 3—Fair value is determined by using inputs that are unobservable and not corroborated by market data. Use of these inputs involves significant and subjective judgment. Derivatives: The table below summarizes the estimated fair values of certain of our financial assets that are subject to fair value measurements, and the classification of these assets in our consolidated balance sheets, as follows (in thousands):
| As of December 31, 2024
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Other Current Assets |  |  |  |  |  |  |
2019 SWAPS - Interest Rate Contracts | $ | — |  |  | $ | 7,112 |  |  | $ | — |  |  | $ | 7,112 |
| As of December 31, 2023
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Deposits and Other |  |  |  |  |  |  |
2019 SWAPS - Interest Rate Contracts | $ | — |  |  | $ | 15,118 |  |  | $ | — |  |  | $ | 15,118 |
The estimated fair value of these contracts was determined using Level 2 inputs. More specifically, the fair value was determined by calculating the value of the difference between the fixed interest rate of the interest rate swaps and the counterparty’s forward SOFR curve in 2024 and 2023. respectively. The forward SOFR curve and forward LIBOR curve are readily available in the public markets or can be derived from information available in the public markets. Contingent Consideration: The tables below summarize the estimated fair values of contingencies and holdbacks relating to our acquisitions that are subject to fair value measurements and the classification of these liabilities on our consolidated balance sheets, as follows (in thousands):
| As of December 31, 2024
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Accrued expenses and other non-current liabilities |  |  |  |  |  |  |
Heart & Lung Imaging Limited | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
| As of December 31, 2023
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Accrued expenses and other non-current liabilities |  |  |  |  |  |  |
Heart & Lung Imaging Limited | $ | — |  |  | $ | — |  |  | $ | 6,242 |  |  | $ | 6,242 |
The estimated fair value of these liabilities was determined using Level 3 inputs. For Heart & Lung Imaging Limited, the contingent consideration is determined by the achievement of a specific number of physician reads. As significant inputs for the contingent consideration of Heart & Lung Imaging Limited are not observable and cannot be corroborated by observable market data they are classified as Level 3. Long Term Debt The table below summarizes the estimated fair value and carrying amount of our Barclays Term Loans and Trust Term Loan long-term debt as follows (in thousands):
| As of December 31, 2024
| Level 1 |  | Level 2 |  | Level 3 |  | Total Fair Value |  | Total Face Value
Barclays Term Loans and Truist Term Loan | $ | — |  |  | $ | 1,006,713 |  |  | $ | — |  |  | $ | 1,006,713 |  |  | $ | 1,005,625 |
| As of December 31, 2023
| Level 1 |  | Level 2 |  | Level 3 |  | Total Fair Value |  | Total Face Value
Barclays Term Loans and Truist Term Loan | $ | — |  |  | $ | 824,759 |  |  | $ | — |  |  | $ | 824,759 |  |  | $ | 823,063 |
Our Barclays revolving credit facility had no aggregate principal amount outstanding as of December 31, 2024 and 2023, respectively. Our Truist revolving credit facility had no aggregate principal amount outstanding as of December 31, 2024 and 2023, respectively. The estimated fair values of our long-term debt, which is discussed in Note 8, was determined using Level 2 inputs for the Barclays and Truist term loans. Level 2 inputs primarily relate to comparable market prices. We consider the carrying amounts of cash and cash equivalents, receivables, other current assets, and current liabilities to approximate their fair value because of the relatively short period of time between the origination of these instruments and their expected realization or payment. Additionally, we consider the carrying amount of our and other notes payable to approximate their fair value because the weighted average interest rate used to formulate the carrying amounts approximates current market rates. EARNINGS PER SHARE - Earnings per share is based upon the weighted average number of shares of common stock and common stock equivalents outstanding, net of common stock held in treasury, as follows (in thousands except share and per share data):
| Years Ended December 31,
| 2024 |  | 2023 |  | 2022
Net income attributable to RadNet, Inc. common stockholders | $ | 2,793 |  |  | $ | 3,044 |  |  | $ | 10,650 |
BASIC NET INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS |  |  |  |  |
Weighted average number of common shares outstanding during the period | 73,037,237 |  |  | 63,580,059 |  |  | 56,293,336 |
Basic net income per share attributable to RadNet, Inc. common stockholders | $ | 0.04 |  |  | $ | 0.05 |  |  | $ | 0.19 |
DILUTED NET INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS |  |  |  |  |
Weighted average number of common shares outstanding during the period | 73,037,237 |  |  | 63,580,059 |  |  | 56,293,336 |
Add nonvested restricted stock subject only to service vesting | 296,849 |  |  | 202,995 |  |  | 172,139 |
Add additional shares issuable upon exercise of stock options, warrants and holdback shares | 1,428,246 |  |  | 875,245 |  |  | 855,395 |
Weighted average number of common shares used in calculating diluted net income per share | 74,762,332 |  |  | 64,658,299 |  |  | 57,320,870 |
Changes in fair value associated with contingently issuable shares | $ | — |  |  | $ | — |  |  | $ | (724) |
Net income attributable to RadNet, Inc's common stockholders for diluted share calculation | $ | 2,793 |  |  | $ | 3,044 |  |  | $ | 9,926 |
Diluted net income per share attributable to RadNet, Inc. common stockholders | $ | 0.04 |  |  | $ | 0.05 |  |  | $ | 0.17 |
Stock options and non-vested restricted awards excluded from the computation of diluted per share amounts as their effect would be antidilutive: |  |  |  |  |
Shares issuable upon the exercise of stock options | — |  |  | 754,131 |  |  | 152,723 |
Weighted average shares for which the exercise price exceeds the average market price of common stock | — |  |  | 70,760 |  |  | — |
INVESTMENTS IN EQUITY SECURITIES- Accounting guidance requires entities to measure equity investments at fair value, with any changes in fair value recognized in net income. If there is no readily determinable fair value, the guidance allows entities the ability to measure investments at cost, adjusted for observable price changes and impairments, with changes recognized in net income. As of December 31, 2024, we have three equity investments with an aggregate carry value of $8.0 million. No observable price changes or impairments in our investments were identified as of December 31, 2024, 2023, and 2022, except as disclosed below. During the year ended December 31, 2024, we recognized a $1.2 million impairment loss on our investment in Israel-based Medic Vision in our Imaging Center segment. This was driven by the escalating geopolitical tensions in Israel, which adversely affected market conditions, along with a bona fide offer we received for a similar investment. The offer, which was below the carrying value of our investment, provided a reliable indication of the current fair value of our Medic Vision investment. As a result, we determined that the carrying amount of the investment exceeded its fair value, and the impairment loss has been recorded within "Other income" in our Consolidated Statements of Operations. INVESTMENT IN JOINT VENTURES – We have 12 unconsolidated joint ventures that represent partnerships with hospitals, health systems or radiology practices and were formed for the purpose of owning and operating diagnostic imaging centers. Professional services at the joint venture diagnostic imaging centers are performed by contracted radiology practices or a radiology practice that participates in the joint venture. Our investment in these joint ventures is accounted for under the equity method, as we do not have a controlling financial interest in such ventures. We evaluate our investment in joint ventures, including cost in excess of book value (equity method goodwill) for impairment whenever indicators of impairment exist. No indicators of impairment existed as of December 31, 2024. The table below summarizes our ownership interest in these joint ventures as of December 31, 2024:
Joint Venture | Percentage Ownership
Franklin Imaging, LLC | 49 | %
Greater Baltimore Diagnostic Imaging | 50 | %
Advanced Imaging at St. Joseph Medical Center, LLC | 49 | %
Carroll County Radiology, LLC | 40 | %
Baltimore Washington Imaging Center, LLC | 35 | %
Calvert Medical Imaging Centers, LLC | 50 | %
Montgomery Community Magnetic Imaging Ctr LP | 49 | %
Mt. Airy Imaging Center, LLC | 40 | %
Orange County Radiation Oncology, LLC | 40 | %
Arizona Diagnostic Radiology Group LLC | 49 | %
Glendale Advanced Imaging Center, LLC | 55 | %
Santa Monica Imaging Group LLC | 49 | %
Joint venture investment and financial information The following table is a summary of our investment in joint ventures during the years ended December 31, 2024 and 2023 (in thousands):
Balance as of December 31, 2022 | $ | 57,893 |
Equity in earnings in these joint ventures | 6,427 |
Distribution of earnings | (15,603) |
Equity contributions in existing and purchase of interest in joint ventures | 43,993 |
Balance as of December 31, 2023 | $ | 92,710 |
Equity in earnings in these joint ventures | 14,472 |
Distribution of earnings | (4,546) |
Equity contributions in existing and purchase of interest in joint ventures | 1,496 |
Impairment loss | (75) |
Balance as of December 31, 2024 | $ | 104,057 |
We charged management service fees from the imaging centers underlying these joint ventures of approximately $24.1 million , $17.9 million, and $22.2 million for the years ended December 31, 2024, 2023 and 2022, respectively. We eliminate any unrealized portion of our management service fees with our equity in earnings of joint ventures. As we have the ability to exercise significant influence over our joint venture entities, we consider them related parties. Amounts transacted between ourselves and the entities in the ordinary course of business are disclosed on our balance sheet in the due from/to affiliate accounts. During the year ended December 31, 2024, we have identified an other than temporary impairment in certain of our investments in joint ventures. As a result, we have recognized a $0.1 million impairment loss on certain of our joint venture investment in our Imaging Center segment, which has been recorded within "Other income" in our Consolidated Statements of Operations. The following table is a summary of key financial data for these joint ventures as of December 31, 2024 and 2023, respectively, and for the years ended December 31, 2024, 2023 and 2022, respectively, (in thousands):
| December 31,
Balance Sheet Data: | 2024 |  | 2023
Current assets | $ | 61,158 |  |  | $ | 39,819 |
Noncurrent assets | 232,750 |  |  | 224,936 |
Current liabilities | (53,182) |  |  | (46,587) |
Noncurrent liabilities | (70,241) |  |  | (70,834) |
Total net assets | $ | 170,485 |  |  | $ | 147,334 |
| 2024 |  | 2023 |  | 2022
Net revenue | $ | 264,471 |  |  | $ | 184,194 |  |  | $ | 145,256 |
Net income | $ | 30,833 |  |  | $ | 12,968 |  |  | $ | 21,169 |
During the years ended December 31, 2024 and 2023, we made additional equity contributions of $1.4 million and $2.4 million, respectively, to Arizona Diagnostic Radiology Group ("ADRG", our joint venture with Dignity Health). On November 1, 2022, we contributed eight of our imaging centers to ADRG of $12.7 million and recorded a loss of $0.5 million, which was calculated as the difference between the sale price and carrying value of such imaging centers which included equipment and other assets and an allocation of goodwill to such imaging centers. We recorded $4.5 million of the sale price as an offset to due to affiliates while the remaining $8.3 million was recorded as investment in joint venture on our balance sheet. We accounted for the transaction as an adjustment to our equity investment for the value of the assets contributed. To maintain our 49% economic interest in ADRG, we received a distribution from the partnership of $4.5 million to reduce our overall investment to $8.3 million. Joint venture investment contribution Santa Monica Imaging Group, LLC. Santa Monica Imaging Group, LLC ("SMIG") is a joint venture between RadNet (49% economic interest) and Cedars-Sinai Medical Center ("CSMC") (51% economic interest), consisting of multiple multi-modality imaging centers in Santa Monica and Beverly Hills, California. RadNet initially held a 40% economic interest, which was later reduced to 35% in 2019. In September 2023, RadNet increased its economic to 35% by contributing two imaging centers (one newly constructed in Beverly Hills) valued at $27.2 million and purchasing an additional interest for cash payment of $11.3 million. Simultaneously, CSMC contributed five additional imaging centers in Santa Monica. As a result of this transaction, RadNet recognized a $16.8 million gain, recorded under (Gain) on contribution of imaging centers into joint venture in the Consolidated Statements of Operations, reflecting the difference between the fair value and carrying value of the contributed businesses. The related gain on disposal of business was calculated as the difference between the fair value and carrying value of such imaging centers which included equipment, other assets, accrued liabilities, and an allocation of goodwill to such imaging centers. In determining the fair value of the imaging centers contributed to SMIG, we used an income approach which is considered a level 3 valuation technique. See Fair Value Measurements above for further detail on the valuation hierarchy. Key assumptions used in measuring the fair value are financial forecasts and a discount rate. We also utilized the cash paid for an additional interest in the joint venture to substantiate the fair value of the contributed assets.

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