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(Details) link:presentationLink link:calculationLink link:definitionLink 2103102 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 2204201 - Disclosure - Summary of Significant Accounting Policies - (Policies) link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - Summary of Significant Accounting Policies - (Tables) link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - Summary of Significant Accounting Policies - Revenue by Major Payers (Details) link:presentationLink link:calculationLink link:definitionLink 2407403 - Disclosure - Summary of Significant Accounting Policies - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2408404 - Disclosure - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 2409405 - Disclosure - Summary of Significant Accounting Policies - 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Disclosure - Stock Option Plan - Fair Value Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 2436421 - Disclosure - Stock Option Plan - Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2137109 - Disclosure - Covid-19 link:presentationLink link:calculationLink link:definitionLink 2438422 - Disclosure - Covid-19 (Details) link:presentationLink link:calculationLink link:definitionLink 2139110 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 2440423 - Disclosure - Subsequent Events - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink