Mezzanine and Shareholders' Equity - Additional Information (Detail) - USD ($)						1 Months Ended				12 Months Ended
		Oct. 14, 2020	Dec. 08, 2017	Dec. 07, 2017	Oct. 14, 2015	Dec. 18, 2018	Mar. 21, 2018	Dec. 07, 2017	Mar. 30, 2016	Dec. 31, 2018	Dec. 31, 2017	Mar. 30, 2021	Dec. 08, 2018	Dec. 31, 2016	Dec. 31, 2015
Stock Issued During Period, Value, Stock Options Exercised											$ 2,059,533
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price											$ 0.17
Stock Issued During Period, Shares, New Issues											266,000
Shares Issued, Price Per Share							$ 16.80				$ 1.00
Stock Issued During Period, Value, New Issues							$ 631,562				$ 300,000
Proceeds from Issuance of Common Stock										$ 200,000	2,160,736
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term										9 months
Stock Repurchased During Period, Value										$ 4,200,000	1,652,286
Gain (Loss) on Investments										$ 0	$ 13,697,018
Share-based Compensation				$ 800,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period										488,464
Class of Warrant or Right, Exercise Price of Warrants or Rights										$ 9.93	$ 9.75			$ 0
Business Acquisition, Share Price	[1]									$ 10.00
Stock Issued During Period, Shares, Merger										480,212
Treasury Stock, Common, Shares										1,850,603	1,682,110
Holdback Rate										10.00%
Stock Issued During Period, Shares, Issued for Services							37,593
Repurchase of common shares										$ 5,047,643	$ 3,175,836
Share based Compensation Arrangement By Share based Payment Award Cashless Options Exercises In Period										151,346
Share based Compensation Arrangement By Share based Payment Award Cashless Options Exercises In Period Net										109,438
Share based Compensation Arrangement By Share based Payment Award Warrants Exercises In Period										286,357
Warrant Issued During Period Value Stock Options Exercised										$ 2,200,000
Common Stock, Shares Subscribed but Unissued				508,133				508,133
Private Placement [Member]
Stock Issued During Period, Shares, New Issues					1,111,111
Stock Issued During Period, Value, New Issues					$ 10,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights					$ 9.00
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term											11 months 5 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate										38.10%	38.10%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate										1.64%	1.64%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price										$ 0.01
Share based Compensation Arrangement By Share based Payment Award Warrant Exercisable Weighted Average Exercise Price										4.00
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term											1 year 9 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate										41.60%	41.60%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate										1.86%	1.86%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price										$ 10.00
Share based Compensation Arrangement By Share based Payment Award Warrant Exercisable Weighted Average Exercise Price										11.00
Share-based Compensation Award, Tranche One [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased													1,519,805
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number										1,519,805
Stock Repurchase Program Expiration Date										Jul. 31, 2019
CDSC [Member]
Payments of Ordinary Dividends, Common Stock										$ 2,000,000	$ 1,700,000
Allied Pacific of California [Member]
Repurchase of common shares						$ 1,700,000
Stock Repurchased and Retired During Period, Shares						1,662,571
Litigation Settlement, Expense						$ 400,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased						1,662,571
ApolloMed [Member]
Stock Issued During Period, Shares, New Issues		1,111,111								555,555
2015 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized										900,000	1,000,000				1,500,000
Stock Compensation Plan [Member]
Share based Compensation Arrangement By Share based Payment Award Options Grant Weighted Average Remaining Contractual Term										9 months	1 year 9 months
2010 Equity Incentive Plan
Stock Issued During Period, Shares, Issued for Services										500,000
2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized										500,000
Warrant 1 [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
Warrant 2 [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
Former Shareholders of NMM [Member]
Shares, Issued										25,675,630
APC Stock Option [Member]
Proceeds from Stock Options Exercised											$ 200,000
Stock Issued During Period, Value, Stock Options Exercised										$ 1,800,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price										$ 0.17
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period										7,110,150	7,110,150
APC Common Stock [Member]
Proceeds from Stock Options Exercised											$ 1,200,000
Stock Issued During Period, Value, Stock Options Exercised											1,056,600
Payments of Ordinary Dividends, Common Stock										$ 2,000,000	$ 8,750,000
First Repurchase [Member]
Stock Repurchased During Period, Shares											1,466,000
Stock Repurchased During Period, Value											$ 1,500,000
Treasury Stock Acquired, Average Cost Per Share											$ 1.00
Second Repurchase [Member]
Stock Repurchased During Period, Shares											345,300
Stock Repurchased During Period, Value											$ 100,000
Treasury Stock Acquired, Average Cost Per Share											$ 0.17
Network Medical Management, Inc 'NMM' [Member]
Stock Repurchased During Period, Shares										30,397,489
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price										$ 2.44
Number Of Shares Holdback, Percentage										10.00%
Stock Issued During Period,Share,Conversion Of Notes										520,081
Stock Issued During Period Value Conversion Of Notes										$ 5,400,000
Payments of Ordinary Dividends, Common Stock										13,800,000	$ 0
Network Medical Management, Inc 'NMM' [Member] | Stock Compensation Plan [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized										$ 600,000	1,400,000
AMEH [Member]
Stock Repurchased During Period, Shares			3,039,749
Allied Pacific of California [Member]
Treasury Stock, Common, Shares										1,682,110
NMM [Member]
Proceeds from Issuance of Common Stock				$ 200,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period				102,641
Sale of Stock, Price Per Share				$ 14.61				$ 14.61
Business Acquisition, Share Price				$ 1.46				$ 1.46
Sale of Stock, Consideration Received Per Transaction				$ 1,900,000
Sale of Stock, Number of Shares Issued in Transaction				129,651
NMM [Member] | First Repurchase [Member]
Stock Repurchased During Period, Shares								109,123
Stock Repurchased During Period, Value								$ 1,600,000
Business Acquisition, Share Price										$ 14.61
NMM [Member] | Second Repurchase [Member]
Stock Repurchased During Period, Shares								23,628
Stock Repurchased During Period, Value								$ 100,000
Business Acquisition, Share Price										$ 2.44
Common Stock [Member]
Stock Issued During Period, Value, Stock Options Exercised											$ 233
Stock Repurchased During Period, Shares											132,752
Stock Repurchased During Period, Value											$ 133
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period											232,254
Stock Issued During Period, Shares, Merger											6,109,205
Common Stock [Member] | NMM [Member]
Stock Issued During Period, Value, Stock Options Exercised											$ 300,000
Shares Issued, Price Per Share											$ 2.44
Common Stock, Share Subscribed but Unissued, Subscriptions Receivable				$ 1,200,000				$ 1,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period											102,199
Series A Preferred Stock [Member]
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Fair Value Method					12.7
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term					2 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate					37.90%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate					1.80%
Gain (Loss) on Investments											$ 8,600,000
Series A Preferred Stock [Member] | Network Medical Management, Inc 'NMM' [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 9.00										$ 10.00
Series B Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues									555,555
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Fair Value Method									6.4
Stock Issued During Period, Value, New Issues									$ 5,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term									2 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate									37.90%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate									1.80%
Class of Warrant or Right, Exercise Price of Warrants or Rights									$ 10.00
Series B Preferred Stock [Member] | Network Medical Management, Inc 'NMM' [Member]
Number Of Shares Holdback, Percentage										10.00%
Holdback Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage										50.00%
Holdback Shares [Member] | Former Shareholders of NMM [Member] | Share-based Compensation Award, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage										50.00%
Holdback Shares [Member] | Former Shareholders of NMM [Member] | Share-based Compensation Award, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage										50.00%

[1] Represents the closing price of ApolloMed’s common stock on December 8, 2017.