Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)	3 Months Ended
	Mar. 31, 2020 USD ($) segment unit	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of operating segments | segment	1
Number of reportable segments | segment	1
Amount deposit accounts exceeded FDIC insured limit	$ 209,300,000
Amount of short-term marketable securities	$ 117,075,000		$ 116,539,000
Risk pool surplus or deficits, settlement period after risk pool performance year	18 months
Allowance for doubtful accounts	$ 2,900,000		2,900,000
Impairment of finite-lived intangible assets	0	$ 0
Impairment of long-lived assets	$ 0	0
Number of main reporting units | unit	3
Impairment of goodwill	$ 0	0
Impairment of indefinite-lived intangible assets	0	$ 0
Contract liabilities	664,000		$ 8,892,000
Payments received	7,500,000
Accrued contract liability recognized	21,900,000
Investment deposit	$ 4,000,000
Voting rights held (more than)	50.00%
Other Receivables, Final Settlement 2017 Performance Year
Summary Of Significant Accounting Policies [Line Items]
Recoverable claims paid				$ 3,200,000
Accounts Payable and Accrued Expenses
Summary Of Significant Accounting Policies [Line Items]
Payments received	$ 22,600,000
Accrued contract liability recognized	400,000
Contract liability repaid, capitation received and not earned	8,500,000
Other Receivables
Summary Of Significant Accounting Policies [Line Items]
Recoverable claims paid	$ 8,500,000
CMS
Summary Of Significant Accounting Policies [Line Items]
Expected period of payment upon termination of agreement	30 days
PMPM Managed Care Contract
Summary Of Significant Accounting Policies [Line Items]
Contract term	P1Y
Management Fee Income Contract
Summary Of Significant Accounting Policies [Line Items]
Contract term	P10Y
Minimum
Summary Of Significant Accounting Policies [Line Items]
Marketable Securities, Current, Maturity Period	4 months
Maximum
Summary Of Significant Accounting Policies [Line Items]
Marketable Securities, Current, Maturity Period	24 months
Certificates of Deposit
Summary Of Significant Accounting Policies [Line Items]
Amount of short-term marketable securities	$ 117,000,000