Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) Segment shares	Dec. 31, 2020 USD ($) Segment shares	Dec. 31, 2019 USD ($)	Jul. 31, 2021 shares
Accounting Policies [Line Items]
Allowance for doubtful accounts	$ 0	$ 0
Unbilled receivables	$ 16,200	$ 5,700
Common stock, shares outstanding (in shares) | shares	49,800,756	48,983,735
Depreciation expense	$ 11,298	$ 9,930	$ 7,137
Number of reporting units | Segment	1	1
Accrued liabilities	$ 28,270	$ 18,424
Continuing Operations
Accounting Policies [Line Items]
Number of reporting units | Segment	1
Media expense	$ 4,000	7,200	$ 7,100
Prepaid for future advertisements and promotions	1,800	0
Network Locations Visits
Accounting Policies [Line Items]
Accrued liabilities	19,300	10,500
Tradename
Accounting Policies [Line Items]
Intangible assets not subject to amortization	$ 29,000	$ 29,000
Minimum
Accounting Policies [Line Items]
Remaining lease terms	7 months
Estimated useful life	3 years	3 years
Maximum
Accounting Policies [Line Items]
Remaining lease terms	33 months
Estimated useful life	10 years	10 years
Computer Software and Hardware | Minimum
Accounting Policies [Line Items]
Useful life	3 years
Computer Software and Hardware | Maximum
Accounting Policies [Line Items]
Useful life	7 years
Furniture and Office Equipment | Minimum
Accounting Policies [Line Items]
Useful life	4 years
Furniture and Office Equipment | Maximum
Accounting Policies [Line Items]
Useful life	7 years
Equipment | Minimum
Accounting Policies [Line Items]
Useful life	3 years
Equipment | Maximum
Accounting Policies [Line Items]
Useful life	5 years
Leasehold Improvements | Minimum
Accounting Policies [Line Items]
Useful life	2 years
Leasehold Improvements | Maximum
Accounting Policies [Line Items]
Useful life	15 years
Sharecare
Accounting Policies [Line Items]
Common stock, shares outstanding (in shares) | shares	11,079,331			11,079,331