Revenue Recognition - Additional Information (Details)			1 Months Ended	3 Months Ended
		Mar. 07, 2019 Segment	Mar. 31, 2019 USD ($)	Mar. 31, 2020 USD ($) Segment Program Obligation Source	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Disaggregation Of Revenue [Line Items]
Number of reportable segments | Segment		1		2
Revenue, Practical Expedient, Initial Application and Transition, Qualitative Assessment				true
Revenue	[1]			$ 337,655,000	$ 214,094,000
Healthcare
Disaggregation Of Revenue [Line Items]
Number of programs | Program				3
Number of performance obligations | Obligation				1
Number of performance obligation unsatisfied | Obligation				0
Revenue recognized from performance obligations satisfied in prior period				$ 0
Period of billing in arrears once timing of services to customers is known				1 month
Number of days for customer to make payment after being invoiced				30 days
Capitalized costs				$ 600,000		$ 500,000
Number of reportable segments | Segment				2
Revenue				$ 159,692,000	156,527,000
Nutrition
Disaggregation Of Revenue [Line Items]
Number of sources for revenue recognition | Source				4
Description of return of obligation				Direct to consumer customers may return unopened ready-to-go Nutrisystem products within 30 days after purchase in
Return of purchase order to refund or credit, period				30 days
Purchase order canceled of delivery, period				14 days
Revenue				$ 177,963,000	$ 57,567,000
Provision for estimated returns			$ 1,400,000	5,200,000
Nutrition | Accrued Liabilities
Disaggregation Of Revenue [Line Items]
Reserve for estimated returns				1,700,000		$ 800,000
Nutrition | Shipping and Handling Charges
Disaggregation Of Revenue [Line Items]
Revenue			$ 1,800,000	$ 6,500,000

[1] The figure for total segments equals the consolidated figure for such item.