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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, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue from External Customer [Line Items]
Service revenues as a percentage of total revenues	100.00%	100.00%	100.00%	100.00%
Patent service revenues
Revenue from External Customer [Line Items]
Service revenues as a percentage of total revenues	98.70%	98.50%	98.70%	98.50%
Surgical Facility Services
Revenue from External Customer [Line Items]
Service revenues as a percentage of total revenues	95.50%	95.00%	95.50%	94.80%
Ancillary Services
Revenue from External Customer [Line Items]
Service revenues as a percentage of total revenues	3.20%	3.50%	3.20%	3.70%
Other service revenues
Revenue from External Customer [Line Items]
Service revenues as a percentage of total revenues	1.30%	1.50%	1.30%	1.50%

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