Organization and Summary of Accounting Policies - Schedule of Revenues by Service Type (Details) - Revenue Source - Revenue	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue from External Customer [Line Items]
Service revenues as a percentage of total revenues	100.00%	100.00%
Total patient service revenues
Revenue from External Customer [Line Items]
Service revenues as a percentage of total revenues	98.60%	98.50%
Surgical Facility Services
Revenue from External Customer [Line Items]
Service revenues as a percentage of total revenues	94.70%	93.80%
Ancillary Services
Revenue from External Customer [Line Items]
Service revenues as a percentage of total revenues	3.90%	4.70%
Healthcare Organization, Other Service
Revenue from External Customer [Line Items]
Service revenues as a percentage of total revenues	1.40%	1.50%
Optical Services
Revenue from External Customer [Line Items]
Service revenues as a percentage of total revenues	0.20%	0.30%
Other
Revenue from External Customer [Line Items]
Service revenues as a percentage of total revenues	1.20%	1.20%