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Organization and Summary of Accounting Policies - Schedule of Revenues by Service Type (Details) - Revenue Source - Revenue	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue from External Customer [Line Items]
Revenue by service type as a proportion of total revenues (as a percent)	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%
Surgical Facility Services
Revenue from External Customer [Line Items]
Revenue by service type as a proportion of total revenues (as a percent)	95.70%	95.50%
Ancillary Services
Revenue from External Customer [Line Items]
Revenue by service type as a proportion of total revenues (as a percent)	2.90%	3.20%
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%

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