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Organization and Summary of Accounting Policies - Schedule of Revenues by Service Type (Details) - Revenue Source - Revenue
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Revenue from External Customer [Line Items]        
Revenue by service type as a proportion of total revenues (as a percent) 100.00% 100.00% 100.00% 100.00%
Patent service revenues        
Revenue from External Customer [Line Items]        
Revenue by service type as a proportion of total revenues (as a percent) 98.20% 98.30% 98.40% 98.50%
Surgical Facility Services        
Revenue from External Customer [Line Items]        
Revenue by service type as a proportion of total revenues (as a percent) 95.80% 95.60% 95.90% 95.70%
Ancillary Services        
Revenue from External Customer [Line Items]        
Revenue by service type as a proportion of total revenues (as a percent) 2.40% 2.70% 2.50% 2.80%
Other service revenues        
Revenue from External Customer [Line Items]        
Revenue by service type as a proportion of total revenues (as a percent) 1.80% 1.70% 1.60% 1.50%