Investments in Other Entities — Equity Method - Additional Information (Details)		1 Months Ended		3 Months Ended		6 Months Ended
	Jul. 01, 2019 USD ($)	Jun. 30, 2018 USD ($)	May 31, 2018 USD ($) $ / shares shares	Jun. 30, 2021 USD ($) provider	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) provider	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	Dec. 18, 2020 USD ($)	Apr. 23, 2019 USD ($)	May 31, 2016	Jul. 31, 2015 USD ($)	Dec. 31, 2012 USD ($)
Schedule of Equity Method Investments [Line Items]
Income (loss) from equity method investments				$ (3,134,000)	$ 834,000	$ (3,812,000)	$ 2,888,000
Investments in other entities – equity method				37,372,000		37,372,000		$ 43,292,000
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 received (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
Network Medical Management, Inc. | 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
Related investment balance				$ 500,000		$ 500,000
LaSalle Medical Associates
Schedule of Equity Method Investments [Line Items]
Number of employees | provider				2,400		2,400
Income (loss) from equity method investments						$ (4,328,000)
Investments in other entities – equity method				$ 8,719,000		8,719,000		13,047,000
LaSalle Medical Associates | APC and APC-LSMA | Convertible Secured Promissory Note | Dr. Arteaga
Schedule of Equity Method Investments [Line Items]
Ownership upon conversion of finance receivable									46.25%
LaSalle Medical Associates | APC LSMA
Schedule of Equity Method Investments [Line Items]
Amount invested for interest													$ 5,000,000.0
Ownership interest													25.00%
LaSalle Medical Associates | APC
Schedule of Equity Method Investments [Line Items]
Income (loss) from equity method investments				(3,600,000)	200,000	(4,300,000)	(400,000)
LaSalle Medical Associates | APC | Convertible Secured Promissory Note | Dr. Arteaga
Schedule of Equity Method Investments [Line Items]
Amount of loan									$ 6,400,000
Equity method investment, conversion of finance receivable, ownership percentage increase									21.25%
Pacific Medical Imaging & Oncology Center, Inc.
Schedule of Equity Method Investments [Line Items]
Income (loss) from equity method investments						(30,000)
Investments in other entities – equity method				1,383,000		1,383,000		1,413,000
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]
Income (loss) from equity method investments				(16,000)	10,200	(30,000)	100,000
Investments in other entities – equity method				1,400,000		1,400,000		1,400,000
Pacific Medical Imaging & Oncology Center, Inc. | APC | Ancillary Service Contract
Schedule of Equity Method Investments [Line Items]
Fees paid				600,000	400,000	1,000,000.0	1,000,000.0
Diagnostic Medical Group
Schedule of Equity Method Investments [Line Items]
Income (loss) from equity method investments						220,000
Investments in other entities – equity method				2,833,000		2,833,000		2,613,000
Diagnostic Medical Group | APC
Schedule of Equity Method Investments [Line Items]
Ownership interest											40.00%
Income (loss) from equity method investments				200,000	(100,000)	200,000	(100,000)
531 W. College LLC
Schedule of Equity Method Investments [Line Items]
Income (loss) from equity method investments						(115,000)
Investments in other entities – equity method				$ 17,085,000		$ 17,085,000		17,200,000
Purchase price of real estate		$ 33,300,000
531 W. College LLC | APC
Schedule of Equity Method Investments [Line Items]
Ownership interest		25.00%		50.00%		50.00%
Income (loss) from equity method investments				$ (9,000)	$ (100,000)	$ (100,000)	$ (200,000)
Initial capital contributions		$ 8,300,000
531 W. College LLC | College Street Investment LP
Schedule of Equity Method Investments [Line Items]
Ownership interest		50.00%
Initial capital contributions		$ 16,700,000
531 W. College LLC | Network Medical Management, Inc.
Schedule of Equity Method Investments [Line Items]
Amount invested for interest				16,100,000		16,100,000				$ 8,300,000
Ownership interest		25.00%								25.00%
Initial capital contributions		$ 8,300,000
One MSO, LLC - related party
Schedule of Equity Method Investments [Line Items]
Income (loss) from equity method investments				100,000		246,000
Investments in other entities – equity method				2,641,000		2,641,000		$ 2,395,000
One MSO, LLC - related party | APC
Schedule of Equity Method Investments [Line Items]
Ownership interest								50.00%
Tag-6 Medical Investment Group, LLC
Schedule of Equity Method Investments [Line Items]
Income (loss) from equity method investments				(200,000)		(200,000)
Investments in other entities – equity method				$ 4,700,000		$ 4,700,000		$ 4,500,000
Tag-6 Medical Investment Group, LLC | APC
Schedule of Equity Method Investments [Line Items]
Ownership interest								50.00%
Tag-8 Medical Investment Group, LLC
Schedule of Equity Method Investments [Line Items]
Investments in other entities – equity method								$ 2,100,000
Tag-8 Medical Investment Group, LLC | APC
Schedule of Equity Method Investments [Line Items]
Ownership interest								50.00%