Investments in Other Entities - Additional Information (Details)		1 Months Ended	12 Months Ended
	Jul. 01, 2019 USD ($)	May 31, 2018 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) provider	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Aug. 31, 2021 USD ($)	Apr. 23, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jul. 31, 2015 USD ($)	Dec. 31, 2012 USD ($)
Schedule of Equity Method Investments [Line Items]
(Loss) income from equity method investments			$ (4,306,000)	$ 3,694,000	$ (6,901,000)
Investments in other entities – equity method			41,715,000	43,292,000
Contribution			1,898,000
APC | MediPortal LLC
Schedule of Equity Method Investments [Line Items]
Membership interests purchased (in shares) | shares		270,000
Payments to purchase membership interests		$ 400,000
Membership interests acquired (in dollars per share) | $ / shares		$ 1.50
Ownership percentage		2.80%
Term of warrant		5 years
Number of warrants (in shares) | shares		270,000
Term of option		5 years
Options to purchase additional membership interests (in shares) | shares		380,000
Number of warrants available to purchase, contingent upon the portal completion date (in shares) | shares		480,000
NMM | AchievaMed, Inc.
Schedule of Equity Method Investments [Line Items]
Ownership percentage	10.00%
Percentage of voting common stock, within five years	50.00%
Duration of investment	5 years
Investment amount	$ 500,000		$ 500,000
LaSalle Medical Associates – IPA Line of Business
Schedule of Equity Method Investments [Line Items]
Number of employees (more than) | provider			2,400
(Loss) income from equity method investments			$ (5,831,000)
Investments in other entities – equity method			3,034,000	$ 13,047,000
Contribution			$ 0
LaSalle Medical Associates – IPA Line of Business | APC LSMA
Schedule of Equity Method Investments [Line Items]
Amount invested for interest										$ 5,000,000
Ownership interest			25.00%
LaSalle Medical Associates – IPA Line of Business | APC and APC-LSMA | Dr. Arteaga | Notes Receivable
Schedule of Equity Method Investments [Line Items]
Ownership upon conversion of finance receivable				46.25%
LaSalle Medical Associates – IPA Line of Business | APC
Schedule of Equity Method Investments [Line Items]
(Loss) income from equity method investments			$ (5,800,000)	$ 300,000
LaSalle Medical Associates – IPA Line of Business | APC | Dr. Arteaga | Notes Receivable
Schedule of Equity Method Investments [Line Items]
Amount of loan				$ 6,400,000
Increase in ownership percentage, finance receivable converted				21.25%
Pacific Medical Imaging & Oncology Center, Inc.
Schedule of Equity Method Investments [Line Items]
(Loss) income from equity method investments			306,000
Investments in other entities – equity method			1,719,000	$ 1,413,000
Contribution			0
Pacific Medical Imaging & Oncology Center, Inc. | APC LSMA
Schedule of Equity Method Investments [Line Items]
Amount invested for interest									$ 1,200,000
Ownership interest									40.00%
Pacific Medical Imaging & Oncology Center, Inc. | APC
Schedule of Equity Method Investments [Line Items]
(Loss) income from equity method investments			300,000	17,000
Investments in other entities – equity method			1,700,000	1,400,000
Pacific Medical Imaging & Oncology Center, Inc. | APC | Ancillary Service Contract
Schedule of Equity Method Investments [Line Items]
Fees paid			2,400,000	2,200,000
Diagnostic Medical Group
Schedule of Equity Method Investments [Line Items]
(Loss) income from equity method investments			330,000
Investments in other entities – equity method			0	2,613,000
Initial consolidation gain			2,800,000
Contribution			$ 0
Diagnostic Medical Group | APC
Schedule of Equity Method Investments [Line Items]
Ownership interest			40.00%
(Loss) income from equity method investments			$ 300,000	300,000
531 W. College, LLC – related party
Schedule of Equity Method Investments [Line Items]
(Loss) income from equity method investments			(208,000)
Investments in other entities – equity method			17,230,000	17,200,000
Contribution			238,000
531 W. College, LLC – related party | NMM and APC
Schedule of Equity Method Investments [Line Items]
(Loss) income from equity method investments			(200,000)	$ (400,000)
531 W. College, LLC – related party | APC
Schedule of Equity Method Investments [Line Items]
Ownership interest				50.00%			50.00%	25.00%
Investments in other entities – equity method			17,200,000	$ 17,200,000
Initial capital contributions								$ 8,300,000
Contribution			200,000	1,000,000
531 W. College, LLC – related party | NMM
Schedule of Equity Method Investments [Line Items]
Amount invested for interest							$ 8,300,000
Ownership interest							25.00%	25.00%
Initial capital contributions								$ 8,300,000
531 W. College, LLC – related party | College Street Investment LP
Schedule of Equity Method Investments [Line Items]
Ownership interest								50.00%
Initial capital contributions								$ 16,700,000
One MSO, LLC — related party
Schedule of Equity Method Investments [Line Items]
(Loss) income from equity method investments			515,000
Investments in other entities – equity method			2,910,000	$ 2,395,000
Contribution			0
One MSO, LLC — related party | APC
Schedule of Equity Method Investments [Line Items]
Ownership interest				50.00%
Tag-6 Medical Investment Group, LLC — related party
Schedule of Equity Method Investments [Line Items]
(Loss) income from equity method investments			314,000
Investments in other entities – equity method			4,830,000	$ 4,516,000
Contribution			0
Tag-6 Medical Investment Group, LLC — related party | APC
Schedule of Equity Method Investments [Line Items]
Ownership interest				50.00%
Tag-8 Medical Investment Group, LLC — related party
Schedule of Equity Method Investments [Line Items]
(Loss) income from equity method investments			0
Investments in other entities – equity method			0	$ 2,108,000
Contribution			1,660,000
Tag-8 Medical Investment Group, LLC — related party | APC
Schedule of Equity Method Investments [Line Items]
Ownership interest				50.00%
CAIPA MSO, LLC
Schedule of Equity Method Investments [Line Items]
(Loss) income from equity method investments			300,000
Investments in other entities – equity method			$ 12,000,000			$ 11,700,000
CAIPA MSO, LLC | ApolloMed
Schedule of Equity Method Investments [Line Items]
Ownership interest						30.00%