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Organization and Summary of Accounting Policies - Organization (Details)
Sep. 30, 2021
surgical_facility
state
Products And Services [Line Items]  
Number of surgical facilities owned 127
Number of states in which entity operates | state 31
Number of surgical facilities owned, majority interest 90
Number of surgical facilities owned, consolidated 110
Facilities, Ambulatory Surgery Centers  
Products And Services [Line Items]  
Number of surgical facilities owned 110
Facilities, Surgical Hospitals  
Products And Services [Line Items]  
Number of surgical facilities owned 17