Organization and Summary of Accounting Policies - Organization (Details)	Mar. 31, 2020 surgical_facility state
Products And Services [Line Items]
Number of surgical facilities owned	127
Number of states in which entity operates | state	30
Number of surgical facilities owned, majority interest	84
Number of surgical facilities owned, consolidated	107
Facilities, Ambulatory Surgery Centers
Products And Services [Line Items]
Number of surgical facilities owned	111
Facilities, Surgical Hospitals
Products And Services [Line Items]
Number of surgical facilities owned	16