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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, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
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) | 98.70% | 98.70% | 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) | 95.90% | 95.50% | 95.80% | 95.50%
Ancillary Services |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue by service type as a proportion of total revenues (as a percent) | 2.80% | 3.20% | 2.80% | 3.20%
Other service revenues |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue by service type as a proportion of total revenues (as a percent) | 1.30% | 1.30% | 1.40% | 1.30%

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