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Organization and Summary of Accounting Policies - Schedule of Revenues by Service Type (Details) - Revenue Source - Revenue
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 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) 98.60% 98.70% 98.50% 98.60%
Surgical Facility Services        
Revenue from External Customer [Line Items]        
Revenue by service type as a proportion of total revenues (as a percent) 96.00% 95.90% 96.00% 95.80%
Ancillary Services        
Revenue from External Customer [Line Items]        
Revenue by service type as a proportion of total revenues (as a percent) 2.60% 2.80% 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) 1.40% 1.30% 1.50% 1.40%