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Mergers and Acquisitions - Additional Information (Detail) - USD ($) |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Dec. 08, 2017 | Jan. 08, 2016 | Nov. 11, 2015 | Mar. 30, 2017 | Dec. 20, 2016 | Dec. 31, 2017 | Dec. 31, 2016
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  |  |  |  |  | $ 9.75 |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | [1] |  |  |  |  |  | 6,109,205 |
Payments for Agreement Termination |  |  |  |  |  |  | $ 400,000 |
Equity Method Investments |  |  |  |  |  |  | $ 21,903,524 | $ 24,256,065
Business Acquisition, Share Price | [2] |  |  |  |  |  | $ 10.00 |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | [3] |  |  |  |  |  | $ 61,092,050 |
Preferred Stock [Member] |  |  |  |  |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value | [4] |  |  |  |  |  | $ 19,118,000 |
APA ACO Inc [Member] |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  | 50.00% |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  | $ 1,738,000 |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 7 years |  |  |  |  |
Acquired Finite-lived Intangible Asset, Residual Value |  |  | $ 1,406,131 |  |  |  |  |
Network Medical Management, Inc. [Member] |  |  |  |  |  |  |  |
Payments for Agreement Termination |  |  |  |  |  |  | $ 400,000 |
Conversion of Stock, Shares Issued Per Each Share |  |  |  | 0.6 |  |  |  |
Conversion of Stock, Shares Issued |  |  |  | 513,205 |  | 273,710 |  |
Network Medical Management, Inc. [Member] | Noncontrolling Interest [Member] |  |  |  |  |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value | [5] |  |  |  |  |  | $ 5,129,000 |
Network Medical Management, Inc. [Member] | APA ACO Inc [Member] |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  | 50.00% | 50.00%
APCN-ACO Inc [Member] |  |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares |  |  |  | 513,205 |  | 273,710 |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value |  |  |  | $ 3,075,000 |  |  |  |
Conversion of Stock, Shares Issued Per Each Share |  |  |  | 1 |  |  |  |
Business Acquisition, Share Price |  |  |  | $ 5.99 |  | $ 7.60 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  |  |  |  | $ 1,497,000 |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  |  |  | 5 years |  |
Acquired Finite-lived Intangible Asset, Residual Value |  |  |  |  |  | $ 1,025,660 |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  |  |  |  |  | $ 2,080,000 |  |
Medical Equipment Healthcare Supplies Wheelchair Center [Member] |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  | 75.00% |  |  |  |
Equity Method Investments |  |  | $ 25 |  |  |  |  |
Medical Equipment Healthcare Supplies Wheelchair Center [Member] | APA ACO Inc [Member] |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  | 100.00% |  |  |  |
Allegiance Home Health, Inc [Member] |  |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares |  |  |  |  |  | 109,484 |  |
Equity Method Investment, Ownership Percentage |  |  |  | 25.00% |  |  |  |
Pacific Medical Imaging Oncology Center, Inc [Member] |  |  |  |  |  |  |  |
Economic Interest Percentage |  |  |  | 5.00% |  |  |  |
Alliance Apex, LLC [Member] | Convertible Notes Payable [Member] |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 4,990,000 |  |  |
Debt Instrument, Maturity Date, Description |  |  |  |  | The Alliance Note was due and payable to Alliance Apex, LLC on (i) March 31, 2018, or (ii) the date on which the Change of Control Transaction (see Note 3 NMM transaction) is terminated, whichever occurs first (Maturity Date). |  |  |
Debt Instrument, Convertible, Conversion Price |  |  |  |  | $ 10.00 |  |  |
Apollo Medical Holdings, Inc [Member] |  |  |  |  |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Number of Share |  | 2,566,666 |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 82.00% |  |  |  |  |  |
Business Combination, Consideration Description |  |  |  |  |  |  | The consideration for the transaction was 18% of the total issued and outstanding shares of ApolloMed common stock, or 6,109,205 (immediately following the Merger). |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares |  | 6,109,205 |  |  |  |  |  |
Fair Value Assumptions, Expected Term |  |  |  |  |  |  | 2 years |
Fair Value Assumptions, Expected Volatility Rate |  |  |  |  |  |  | 37.90% |
Fair Value Assumptions, Risk Free Interest Rate |  |  |  |  |  |  | 1.80% |
Preferred Stock, Liquidation Preference, Value |  |  |  |  |  |  | $ 12,745,000 |
Apollo Medical Holdings, Inc [Member] | Convertible Promissory Note [Member] |  |  |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued |  |  |  |  | 520,081 |  |  |
Debt Conversion, Converted Instrument, Amount |  |  |  |  | $ 4,990,000 |  |  |
Apollo Medical Holdings, Inc [Member] | Warrant One [Member] |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  | 850,000 |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  | $ 11.00 |  |  |  |  |  |
Apollo Medical Holdings, Inc [Member] | Warrant Two [Member] |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  | 900,000 |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  | $ 10.00 |  |  |  |  |  |
Maverick Medical Group, Inc [Member] |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Asset |  |  |  |  |  |  | 100 |
Common Class B [Member] | Apollo Medical Holdings, Inc [Member] |  |  |  |  |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value |  |  |  |  |  |  | $ 6,373,000 |
[1] | Represents the number of shares of the combined company that pre-Merger ApolloMed stockholders would own at closing of the Merger.
[2] | Represents the closing price of ApolloMed’s common stock on December 8, 2017.
[3] | Equity consideration Immediately following the Effective Time, pre-Merger ApolloMed stockholders continued to hold an aggregate of 6,109,205 shares of ApolloMed common stock.
[4] | Estimated fair value of ApolloMed’s preferred shares held by NMM NMM currently owns all the shares of ApolloMed Series A preferred stock and Series B preferred stock, which was acquired prior to the Merger. As part of the Merger, the ApolloMed Series A preferred stock and Series B preferred stock is remeasured at fair value and included as part of the consideration transferred to ApolloMed. The fair value of the Series A preferred stock and Series B preferred stock is reflective of the liquidation preferences, claims of priority and conversion option values thereof. In aggregate, the Series A preferred stock and Series B preferred stock were valued to be $19,118,000. The valuation methodology was based on an Option Pricing Method ("OPM") which utilized the observable publicly traded common stock price in valuing the Series A preferred stock and the Series B preferred stock within the context of the capital structure of the Company. OPM assumptions included an expected term of 2 years, volatility rate of 37.9%, and a risk-free rate of 1.8%. The fair value of the liquidation preference for the Series A preferred stock and the Series B preferred stock was determined to be $12,745,000 and the fair value of the conversion option was determined to be $6,373,000 or an aggregate total fair value of $19,118,000.
[5] | Estimated fair value of NMM’s 50% share of APA ACO Inc. Prior to the Merger, APAACO was owned 50% by ApolloMed and 50% NMM. NMM’s noncontrolling interest in APAACO has been remeasured at fair value as of the closing date and is added to the consideration transferred to ApolloMed as a result of NMM relinquishing its equity investment in APAACO in order to obtain control of ApolloMed. The fair value of NMM’s noncontrolling interest in APAACO has been estimated to be $5,129,000 using the discounted cash flow method and NMM recorded a gain on investment for the same amount to reflect the fair value of this investment prior the Merger.

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