Investments in Other Entities — Equity Method - Equity Method Investments (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Equity Method Investments [Roll Forward]
Beginning Balance			$ 28,427,000
Allocation of Income (Loss)	$ 834,000	$ (42,000)	2,888,000	$ (892,000)
Contribution			500,000
Sale			(4,998,000)
Ending Balance	26,817,000		26,817,000
LaSalle Medical Associates – IPA Line of Business
Equity Method Investments [Roll Forward]
Beginning Balance			6,397,000
Allocation of Income (Loss)			(428,000)
Contribution			0
Ending Balance	5,969,000		5,969,000
Pacific Medical Imaging & Oncology Center, Inc.
Equity Method Investments [Roll Forward]
Beginning Balance			1,396,000
Allocation of Income (Loss)			77,000
Contribution			0
Ending Balance	1,473,000		1,473,000
Universal Care, Inc.
Equity Method Investments [Roll Forward]
Beginning Balance			1,438,000
Allocation of Income (Loss)	900,000	$ 4,500,000	3,560,000	$ 5,500,000
Contribution			0
Sale			(4,998,000)
Ending Balance	0		0
Diagnostic Medical Group
Equity Method Investments [Roll Forward]
Beginning Balance			2,334,000
Allocation of Income (Loss)			(102,000)
Contribution			0
Ending Balance	2,232,000		2,232,000
531 W. College, LLC – related party
Equity Method Investments [Roll Forward]
Beginning Balance			16,698,000
Allocation of Income (Loss)			(231,000)
Contribution			500,000
Ending Balance	16,967,000		16,967,000
MWN, LLC – related party
Equity Method Investments [Roll Forward]
Beginning Balance			164,000
Allocation of Income (Loss)			12,000
Contribution			0
Ending Balance	$ 176,000		$ 176,000