Discontinued Operations - Summary of Financial Results Included in Income (Loss) from Discontinued Operations (Parenthetical) (Details) - Nutrisystem, Inc. - USD ($) $ in Thousands			12 Months Ended				21 Months Ended
		Dec. 09, 2020	Dec. 31, 2020		Dec. 31, 2019	[3]	Dec. 08, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Interest expense	[2]		$ 36,798	[1]	$ 34,763
Impairment losses			90,200
Transaction costs directly related to disposition of Nutrition			$ 11,200
Long-term Debt
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Interest expense							$ 519,000
Long-term Debt | Credit Agreement
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Repayment of principal on the term loan		$ 519,000

[1] Results include the period from January 1, 2020 through December 8, 2020.

[2] The term loans under our Credit Agreement were originated with the purchase of Nutrisystem on March 8, 2019. Following the disposition of Nutrisystem, we repaid $519.0 million of principal on the Term Loans under the terms of the Credit Agreement. In conjunction with the partial debt prepayment, we wrote off a portion of the related deferred loan costs and original issue discount. We allocated interest expense to discontinued operations based on the interest expense incurred from March 8, 2019 through December 8, 2020 related to $519.0 million of term loan debt, using our historical interest rates.

[3] Results include the period from March 8, 2019 (the date of acquisition) through December 31, 2019.