Intangible Assets and Goodwill - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Impairment loss of goodwill	$ 119,500
Tradename
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization	509,000	$ 589,000
Nutrisystem
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Impairment loss of goodwill	119,500
Nutrisystem | Tradename
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Impairment loss of intangibles	$ 80,000